CVE-2023-52567

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix out of bounds in init_smb2_rsp_hdr()

If client send smb2 negotiate request and then send smb1 negotiate request, init_smb2_rsp_hdr is called for smb1 negotiate request since need_neg is set to false. This patch ignore smb1 packets after ->need_neg is set to false.(CVE-2023-52441)

In the Linux kernel, the following vulnerability has been resolved:

drm: Don't unref the same fb many times by mistake due to deadlock handling

If we get a deadlock after the fb lookup in drm_mode_page_flip_ioctl() we proceed to unref the fb and then retry the whole thing from the top. But we forget to reset the fb pointer back to NULL, and so if we then get another error during the retry, before the fb lookup, we proceed the unref the same fb again without having gotten another reference. The end result is that the fb will (eventually) end up being freed while it's still in use.

Reset fb to NULL once we've unreffed it to avoid doing it again until we've done another fb lookup.

This turned out to be pretty easy to hit on a DG2 when doing async flips (and CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y). The first symptom I saw that drm_closefb() simply got stuck in a busy loop while walking the framebuffer list. Fortunately I was able to convince it to oops instead, and from there it was easier to track down the culprit.(CVE-2023-52486)

In the Linux kernel, the following vulnerability has been resolved:

media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run

In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work.

In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish.

There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug.

CPU0 CPU1 mtk_jpeg_dec_... | start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use

If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence.

Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run.(CVE-2023-52491)

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: fix NULL pointer in channel unregistration function

__dma_async_device_channel_register() can fail. In case of failure, chan->local is freed (with free_percpu()), and chan->local is nullified. When dma_async_device_unregister() is called (because of managed API or intentionally by DMA controller driver), channels are unconditionally unregistered, leading to this NULL pointer: [ 1.318693] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0 [...] [ 1.484499] Call trace: [ 1.486930] device_del+0x40/0x394 [ 1.490314] device_unregister+0x20/0x7c [ 1.494220] __dma_async_device_channel_unregister+0x68/0xc0

Look at dma_async_device_register() function error path, channel device unregistration is done only if chan->local is not NULL.

Then add the same condition at the beginning of __dma_async_device_channel_unregister() function, to avoid NULL pointer issue whatever the API used to reach this function.(CVE-2023-52492)

In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: host: Drop chan lock before queuing buffers

Ensure read and write…

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix out of bounds in init_smb2_rsp_hdr()

If client send smb2 negotiate request and then send smb1 negotiate request, init_smb2_rsp_hdr is called for smb1 negotiate request since need_neg is set to false. This patch ignore smb1 packets after ->need_neg is set to false.(CVE-2023-52441)

In the Linux kernel, the following vulnerability has been resolved:

drm: Don't unref the same fb many times by mistake due to deadlock handling

If we get a deadlock after the fb lookup in drm_mode_page_flip_ioctl() we proceed to unref the fb and then retry the whole thing from the top. But we forget to reset the fb pointer back to NULL, and so if we then get another error during the retry, before the fb lookup, we proceed the unref the same fb again without having gotten another reference. The end result is that the fb will (eventually) end up being freed while it's still in use.

Reset fb to NULL once we've unreffed it to avoid doing it again until we've done another fb lookup.

This turned out to be pretty easy to hit on a DG2 when doing async flips (and CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y). The first symptom I saw that drm_closefb() simply got stuck in a busy loop while walking the framebuffer list. Fortunately I was able to convince it to oops instead, and from there it was easier to track down the culprit.(CVE-2023-52486)

In the Linux kernel, the following vulnerability has been resolved:

media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_run

In mtk_jpeg_probe, &jpeg->job_timeout_work is bound with mtk_jpeg_job_timeout_work.

In mtk_jpeg_dec_device_run, if error happens in mtk_jpeg_set_dec_dst, it will finally start the worker while mark the job as finished by invoking v4l2_m2m_job_finish.

There are two methods to trigger the bug. If we remove the module, it which will call mtk_jpeg_remove to make cleanup. The possible sequence is as follows, which will cause a use-after-free bug.

CPU0 CPU1 mtk_jpeg_dec_... | start worker | |mtk_jpeg_job_timeout_work mtk_jpeg_remove | v4l2_m2m_release | kfree(m2m_dev); | | | v4l2_m2m_get_curr_priv | m2m_dev->curr_ctx //use

If we close the file descriptor, which will call mtk_jpeg_release, it will have a similar sequence.

Fix this bug by starting timeout worker only if started jpegdec worker successfully. Then v4l2_m2m_job_finish will only be called in either mtk_jpeg_job_timeout_work or mtk_jpeg_dec_device_run.(CVE-2023-52491)

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: fix NULL pointer in channel unregistration function

__dma_async_device_channel_register() can fail. In case of failure, chan->local is freed (with free_percpu()), and chan->local is nullified. When dma_async_device_unregister() is called (because of managed API or intentionally by DMA controller driver), channels are unconditionally unregistered, leading to this NULL pointer: [ 1.318693] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0 [...] [ 1.484499] Call trace: [ 1.486930] device_del+0x40/0x394 [ 1.490314] device_unregister+0x20/0x7c [ 1.494220] __dma_async_device_channel_unregister+0x68/0xc0

Look at dma_async_device_register() function error path, channel device unregistration is done only if chan->local is not NULL.

Then add the same condition at the beginning of __dma_async_device_channel_unregister() function, to avoid NULL pointer issue whatever the API used to reach this function.(CVE-2023-52492)

In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: host: Drop chan lock before queuing buffers

Ensure read and write…

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_port: Check IRQ data before use In case the leaf driver wants to use IRQ polling (irq = 0) and IIR register shows that an interrupt happened in the 8250 hardware the IRQ data can be NULL. In such a case we need to skip the wake event as we came to this path from the timer interrupt and quite likely system is already awake. Without this fix we have got an Oops: serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A ... BUG: kernel NULL pointer dereference, address: 0000000000000010 RIP: 0010:serial8250_handle_irq+0x7c/0x240 Call Trace: ? serial8250_handle_irq+0x7c/0x240 ? __pfx_serial8250_timeout+0x10/0x10

In the Linux kernel, the following vulnerability has been resolved:

serial: 8250_port: Check IRQ data before use

In case the leaf driver wants to use IRQ polling (irq = 0) and IIR register shows that an interrupt happened in the 8250 hardware the IRQ data can be NULL. In such a case we need to skip the wake event as we came to this path from the timer interrupt and quite likely system is already awake.

Without this fix we have got an Oops:

serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A
...
BUG: kernel NULL pointer dereference, address: 0000000000000010
RIP: 0010:serial8250_handle_irq+0x7c/0x240
Call Trace:
 ? serial8250_handle_irq+0x7c/0x240
 ? __pfx_serial8250_timeout+0x10/0x10

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-46925: Fixed kernel panic caused by race of smc_sock (bsc#1220466).
• CVE-2021-46926: Fixed bug when detecting controllers in ALSA/hda/intel-sdw-acpi (bsc#1220478).
• CVE-2021-46927: Fixed assertion bug in nitro_enclaves: Use get_user_pages_unlocked() (bsc#1220443).
• CVE-2021-46929: Fixed use-after-free issue in sctp_sock_dump() (bsc#1220482).
• CVE-2021-46930: Fixed usb/mtu3 list_head check warning (bsc#1220484).
• CVE-2021-46931: Fixed wrong type casting in mlx5e_tx_reporter_dump_sq() (bsc#1220486).
• CVE-2021-46933: Fixed possible underflow in ffs_data_clear() (bsc#1220487).
• CVE-2021-46936: Fixed use-after-free in tw_timer_handler() (bsc#1220439).
• CVE-2021-47082: Fixed ouble free in tun_free_netdev() (bsc#1220969).
• CVE-2021-47087: Fixed incorrect page free bug in tee/optee (bsc#1220954).
• CVE-2021-47091: Fixed locking in ieee80211_start_ap()) error path (bsc#1220959).
• CVE-2021-47093: Fixed memleak on registration failure in intel_pmc_core (bsc#1220978).
• CVE-2021-47094: Fixed possible memory leak in KVM x86/mmu (bsc#1221551).
• CVE-2021-47095: Fixed missing initialization in ipmi/ssif (bsc#1220979).
• CVE-2021-47096: Fixed uninitalized user_pversion in ALSA rawmidi (bsc#1220981).
• CVE-2021-47097: Fixed stack out of bound access in elantech_change_report_id() (bsc#1220982).
• CVE-2021-47098: Fixed integer overflow/underflow in hysteresis calculations hwmon: (lm90) (bsc#1220983).
• CVE-2021-47099: Fixed BUG_ON assertion in veth when skb entering GRO are cloned (bsc#1220955).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47102: Fixed incorrect structure access In line: upper = info->upper_dev in net/marvell/prestera (bsc#1221009).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47105: Fixed potential memory leak in ice/xsk (bsc#1220961).
• CVE-2021-47107: Fixed READDIR buffer overflow in NFSD (bsc#1220965).
• CVE-2021-47108: Fixed possible NULL pointer dereference for mtk_hdmi_conf in drm/mediatek (bsc#1220986).
• CVE-2022-48626: Fixed a potential use-after-free on remove path moxart (bsc#1220366).
• CVE-2022-48629: Fixed possible memory leak in qcom-rng (bsc#1220989).
• CVE-2022-48630: Fixed infinite loop on requests not multiple of WORD_SZ in crypto: qcom-rng (bsc#1220990).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-52450: Fixed NULL pointer dereference issue in upi_fill_topology() (bsc#1220237).
• CVE-2023-52454: Fixed a kernel panic when host sends an invalid H2C PDU length (bsc#1220320).
• CVE-2023-52469: Fixed a use-after-free in kv_parse_power_table (bsc#1220411).
• CVE-2023-52470: Fixed null-ptr-deref in radeon_crtc_init() (bsc#1220413).
• CVE-2023-52474: Fixed a vulnerability with non-PAGE_SIZE-end multi-iovec user SDMA requests (bsc#1220445).
• CVE-2023-52477: Fixed USB Hub accesses to uninitialized BOS descriptors (bsc#1220790).
• CVE-2023-52492: Fixed a null-pointer-dereference in channel unregistration function __dma_async_device_channel_register() (bsc#1221276).
• CVE-2023-52497: Fixed data corruption in erofs (bsc#1220879).
• CVE-2023-52501: Fixed possible memory corruption in ring-buffer (bsc#1220885).
• CVE-2023-52502: Fixed a race condition in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() (bsc#1220831).
• CVE-2023-52504: Fixed possible out-of bounds in apply_alternatives() on a 5-level paging machine (bsc#1221553).
• CVE-2023-52507: Fixed possible shift-out-of-bounds in nfc/nci (bsc#1220833).
• CVE-2023-52508: Fixed null pointer dereference in nvme_fc_io_getuuid() (bsc#1221015).
• CVE-2023-52509: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1220836).
• CVE-2023-52510: Fixed a potential UAF in ca8210_probe() (bsc#1220898). -…

The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2024-25742: Fixed insufficient validation during #VC instruction emulation in x86/sev (bsc#1221725).
• CVE-2023-52519: Fixed possible overflow in HID/intel-ish-hid/ipc (bsc#1220920).
• CVE-2023-52529: Fixed a potential memory leak in sony_probe() (bsc#1220929).
• CVE-2023-52474: Fixed a vulnerability with non-PAGE_SIZE-end multi-iovec user SDMA requests (bsc#1220445).
• CVE-2023-52513: Fixed connection failure handling in RDMA/siw (bsc#1221022).
• CVE-2023-52515: Fixed possible use-after-free in RDMA/srp (bsc#1221048).
• CVE-2023-52564: Reverted invalid fix for UAF in gsm_cleanup_mux() (bsc#1220938).
• CVE-2023-52447: Fixed map_fd_put_ptr() signature kABI workaround (bsc#1220251).
• CVE-2023-52510: Fixed a potential UAF in ca8210_probe() (bsc#1220898).
• CVE-2023-52524: Fixed possible corruption in nfc/llcp (bsc#1220927).
• CVE-2023-52528: Fixed uninit-value access in __smsc75xx_read_reg() (bsc#1220843).
• CVE-2023-52507: Fixed possible shift-out-of-bounds in nfc/nci (bsc#1220833).
• CVE-2023-52566: Fixed potential use after free in nilfs_gccache_submit_read_data() (bsc#1220940).
• CVE-2023-52508: Fixed null pointer dereference in nvme_fc_io_getuuid() (bsc#1221015).
• CVE-2023-6535: Fixed a NULL pointer dereference in nvmet_tcp_execute_request (bsc#1217988).
• CVE-2023-6536: Fixed a NULL pointer dereference in __nvmet_req_complete (bsc#1217989).
• CVE-2023-6356: Fixed a NULL pointer dereference in nvmet_tcp_build_pdu_iovec (bsc#1217987).
• CVE-2023-52454: Fixed a kernel panic when host sends an invalid H2C PDU length (bsc#1220320).
• CVE-2023-52520: Fixed reference leak in platform/x86/think-lmi (bsc#1220921).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-52509: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1220836).
• CVE-2023-52501: Fixed possible memory corruption in ring-buffer (bsc#1220885).
• CVE-2023-52567: Fixed possible Oops in serial/8250_port: when using IRQ polling (irq = 0) (bsc#1220839).
• CVE-2023-52517: Fixed race between DMA RX transfer completion and RX FIFO drain in spi/sun6i (bsc#1221055).
• CVE-2023-52511: Fixed possible memory corruption in spi/sun6i (bsc#1221012).
• CVE-2023-52525: Fixed out of bounds check mwifiex_process_rx_packet() (bsc#1220840).
• CVE-2023-52504: Fixed possible out-of bounds in apply_alternatives() on a 5-level paging machine (bsc#1221553).
• CVE-2023-52575: Fixed SBPB enablement for spec_rstack_overflow=off (bsc#1220871).
• CVE-2022-48626: Fixed a potential use-after-free on remove path moxart (bsc#1220366).
• CVE-2022-48629: Fixed possible memory leak in qcom-rng (bsc#1220989).
• CVE-2022-48630: Fixed infinite loop on requests not multiple of WORD_SZ in crypto: qcom-rng (bsc#1220990).
• CVE-2021-46926: Fixed bug when detecting controllers in ALSA/hda/intel-sdw-acpi (bsc#1220478).
• CVE-2021-47096: Fixed uninitalized user_pversion in ALSA rawmidi (bsc#1220981).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47097: Fixed stack out of bound access in elantech_change_report_id() (bsc#1220982).
• CVE-2021-47094: Fixed possible memory leak in KVM x86/mmu (bsc#1221551).
• CVE-2021-47107: Fixed READDIR buffer overflow in NFSD (bsc#1220965).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47108: Fixed possible NULL pointer dereference for mtk_hdmi_conf in drm/mediatek (bsc#1220986).
• CVE-2021-47098: Fixed integer overflow/underflow in hysteresis calculations hwmon: (lm90) (bsc#1220983).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47095: Fixed missing initialization in ipmi/ssif (bsc#1220979).
• CVE-2021-47091: Fixed locking in ieee80211_start_ap()) error path (bsc#1220959).
• CVE-2021-46936: Fixed use-after-free in tw_timer_handler() (bsc#1220439).
• CVE-2021-47102: Fixed…

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes.

NOTE: This update has been retracted due to a bug in the BHI CPU sidechannel mitigation, which led to incorrect selection of other CPU mitigations.

The following security bugs were fixed:

• CVE-2021-46925: Fixed kernel panic caused by race of smc_sock (bsc#1220466).
• CVE-2021-46926: Fixed bug when detecting controllers in ALSA/hda/intel-sdw-acpi (bsc#1220478).
• CVE-2021-46927: Fixed assertion bug in nitro_enclaves: Use get_user_pages_unlocked() (bsc#1220443).
• CVE-2021-46929: Fixed use-after-free issue in sctp_sock_dump() (bsc#1220482).
• CVE-2021-46930: Fixed usb/mtu3 list_head check warning (bsc#1220484).
• CVE-2021-46931: Fixed wrong type casting in mlx5e_tx_reporter_dump_sq() (bsc#1220486).
• CVE-2021-46933: Fixed possible underflow in ffs_data_clear() (bsc#1220487).
• CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
• CVE-2021-46936: Fixed use-after-free in tw_timer_handler() (bsc#1220439).
• CVE-2021-47082: Fixed ouble free in tun_free_netdev() (bsc#1220969).
• CVE-2021-47083: Fixed a global-out-of-bounds issue in mediatek: (bsc#1220917).
• CVE-2021-47087: Fixed incorrect page free bug in tee/optee (bsc#1220954).
• CVE-2021-47091: Fixed locking in ieee80211_start_ap()) error path (bsc#1220959).
• CVE-2021-47093: Fixed memleak on registration failure in intel_pmc_core (bsc#1220978).
• CVE-2021-47094: Fixed possible memory leak in KVM x86/mmu (bsc#1221551).
• CVE-2021-47095: Fixed missing initialization in ipmi/ssif (bsc#1220979).
• CVE-2021-47096: Fixed uninitalized user_pversion in ALSA rawmidi (bsc#1220981).
• CVE-2021-47097: Fixed stack out of bound access in elantech_change_report_id() (bsc#1220982).
• CVE-2021-47098: Fixed integer overflow/underflow in hysteresis calculations hwmon: (lm90) (bsc#1220983).
• CVE-2021-47099: Fixed BUG_ON assertion in veth when skb entering GRO are cloned (bsc#1220955).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47102: Fixed incorrect structure access In line: upper = info->upper_dev in net/marvell/prestera (bsc#1221009).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47105: Fixed potential memory leak in ice/xsk (bsc#1220961).
• CVE-2021-47107: Fixed READDIR buffer overflow in NFSD (bsc#1220965).
• CVE-2021-47108: Fixed possible NULL pointer dereference for mtk_hdmi_conf in drm/mediatek (bsc#1220986).
• CVE-2022-4744: Fixed double-free that could lead to DoS or privilege escalation in TUN/TAP device driver functionality (bsc#1209635).
• CVE-2022-48626: Fixed a potential use-after-free on remove path moxart (bsc#1220366).
• CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
• CVE-2022-48628: Fixed possible lock in ceph (bsc#1220848).
• CVE-2022-48629: Fixed possible memory leak in qcom-rng (bsc#1220989).
• CVE-2022-48630: Fixed infinite loop on requests not multiple of WORD_SZ in crypto: qcom-rng (bsc#1220990).
• CVE-2023-0160: Fixed deadlock flaw in BPF that could allow a local user to potentially crash the system (bsc#1209657).
• CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-52447: Fixed map_fd_put_ptr() signature kABI workaround (bsc#1220251).
• CVE-2023-52450: Fixed NULL pointer dereference issue in upi_fill_topology() (bsc#1220237).
• CVE-2023-52453: Fixed data corruption in hisi_acc_vfio_pci (bsc#1220337).
• CVE-2023-52454: Fixed a kernel panic when host sends an invalid H2C PDU length (bsc#1220320).
• CVE-2023-52462: Fixed check for attempt to corrupt spilled pointer…

The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-46925: Fixed kernel panic caused by race of smc_sock (bsc#1220466).
• CVE-2021-46926: Fixed bug when detecting controllers in ALSA/hda/intel-sdw-acpi (bsc#1220478).
• CVE-2021-46927: Fixed assertion bug in nitro_enclaves: Use get_user_pages_unlocked() (bsc#1220443).
• CVE-2021-46929: Fixed use-after-free issue in sctp_sock_dump() (bsc#1220482).
• CVE-2021-46930: Fixed usb/mtu3 list_head check warning (bsc#1220484).
• CVE-2021-46931: Fixed wrong type casting in mlx5e_tx_reporter_dump_sq() (bsc#1220486).
• CVE-2021-46933: Fixed possible underflow in ffs_data_clear() (bsc#1220487).
• CVE-2021-46934: Fixed a bug by validating user data in compat ioctl (bsc#1220469).
• CVE-2021-46936: Fixed use-after-free in tw_timer_handler() (bsc#1220439).
• CVE-2021-47082: Fixed ouble free in tun_free_netdev() (bsc#1220969).
• CVE-2021-47083: Fixed a global-out-of-bounds issue in mediatek: (bsc#1220917).
• CVE-2021-47087: Fixed incorrect page free bug in tee/optee (bsc#1220954).
• CVE-2021-47091: Fixed locking in ieee80211_start_ap()) error path (bsc#1220959).
• CVE-2021-47093: Fixed memleak on registration failure in intel_pmc_core (bsc#1220978).
• CVE-2021-47094: Fixed possible memory leak in KVM x86/mmu (bsc#1221551).
• CVE-2021-47095: Fixed missing initialization in ipmi/ssif (bsc#1220979).
• CVE-2021-47096: Fixed uninitalized user_pversion in ALSA rawmidi (bsc#1220981).
• CVE-2021-47097: Fixed stack out of bound access in elantech_change_report_id() (bsc#1220982).
• CVE-2021-47098: Fixed integer overflow/underflow in hysteresis calculations hwmon: (lm90) (bsc#1220983).
• CVE-2021-47099: Fixed BUG_ON assertion in veth when skb entering GRO are cloned (bsc#1220955).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47102: Fixed incorrect structure access In line: upper = info->upper_dev in net/marvell/prestera (bsc#1221009).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47105: Fixed potential memory leak in ice/xsk (bsc#1220961).
• CVE-2021-47107: Fixed READDIR buffer overflow in NFSD (bsc#1220965).
• CVE-2021-47108: Fixed possible NULL pointer dereference for mtk_hdmi_conf in drm/mediatek (bsc#1220986).
• CVE-2022-4744: Fixed double-free that could lead to DoS or privilege escalation in TUN/TAP device driver functionality (bsc#1209635).
• CVE-2022-48626: Fixed a potential use-after-free on remove path moxart (bsc#1220366).
• CVE-2022-48627: Fixed a memory overlapping when deleting chars in the buffer (bsc#1220845).
• CVE-2022-48628: Fixed possible lock in ceph (bsc#1220848).
• CVE-2022-48629: Fixed possible memory leak in qcom-rng (bsc#1220989).
• CVE-2022-48630: Fixed infinite loop on requests not multiple of WORD_SZ in crypto: qcom-rng (bsc#1220990).
• CVE-2023-0160: Fixed deadlock flaw in BPF that could allow a local user to potentially crash the system (bsc#1209657).
• CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-52447: Fixed map_fd_put_ptr() signature kABI workaround (bsc#1220251).
• CVE-2023-52450: Fixed NULL pointer dereference issue in upi_fill_topology() (bsc#1220237).
• CVE-2023-52453: Fixed data corruption in hisi_acc_vfio_pci (bsc#1220337).
• CVE-2023-52454: Fixed a kernel panic when host sends an invalid H2C PDU length (bsc#1220320).
• CVE-2023-52462: Fixed check for attempt to corrupt spilled pointer (bsc#1220325).
• CVE-2023-52463: Fixed null pointer dereference in efivarfs (bsc#1220328).
• CVE-2023-52467: Fixed a null pointer dereference in of_syscon_register…

The SUSE Linux Enterprise 15 SP5 Azure kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-46925: Fixed kernel panic caused by race of smc_sock (bsc#1220466).
• CVE-2021-46926: Fixed bug when detecting controllers in ALSA/hda/intel-sdw-acpi (bsc#1220478).
• CVE-2021-46927: Fixed assertion bug in nitro_enclaves: Use get_user_pages_unlocked() (bsc#1220443).
• CVE-2021-46929: Fixed use-after-free issue in sctp_sock_dump() (bsc#1220482).
• CVE-2021-46930: Fixed usb/mtu3 list_head check warning (bsc#1220484).
• CVE-2021-46931: Fixed wrong type casting in mlx5e_tx_reporter_dump_sq() (bsc#1220486).
• CVE-2021-46933: Fixed possible underflow in ffs_data_clear() (bsc#1220487).
• CVE-2021-46936: Fixed use-after-free in tw_timer_handler() (bsc#1220439).
• CVE-2021-47082: Fixed ouble free in tun_free_netdev() (bsc#1220969).
• CVE-2021-47087: Fixed incorrect page free bug in tee/optee (bsc#1220954).
• CVE-2021-47091: Fixed locking in ieee80211_start_ap()) error path (bsc#1220959).
• CVE-2021-47093: Fixed memleak on registration failure in intel_pmc_core (bsc#1220978).
• CVE-2021-47094: Fixed possible memory leak in KVM x86/mmu (bsc#1221551).
• CVE-2021-47095: Fixed missing initialization in ipmi/ssif (bsc#1220979).
• CVE-2021-47096: Fixed uninitalized user_pversion in ALSA rawmidi (bsc#1220981).
• CVE-2021-47097: Fixed stack out of bound access in elantech_change_report_id() (bsc#1220982).
• CVE-2021-47098: Fixed integer overflow/underflow in hysteresis calculations hwmon: (lm90) (bsc#1220983).
• CVE-2021-47099: Fixed BUG_ON assertion in veth when skb entering GRO are cloned (bsc#1220955).
• CVE-2021-47100: Fixed UAF when uninstall in ipmi (bsc#1220985).
• CVE-2021-47101: Fixed uninit-value in asix_mdio_read() (bsc#1220987).
• CVE-2021-47102: Fixed incorrect structure access In line: upper = info->upper_dev in net/marvell/prestera (bsc#1221009).
• CVE-2021-47104: Fixed memory leak in qib_user_sdma_queue_pkts() (bsc#1220960).
• CVE-2021-47105: Fixed potential memory leak in ice/xsk (bsc#1220961).
• CVE-2021-47107: Fixed READDIR buffer overflow in NFSD (bsc#1220965).
• CVE-2021-47108: Fixed possible NULL pointer dereference for mtk_hdmi_conf in drm/mediatek (bsc#1220986).
• CVE-2021-47181: Fixed a null pointer dereference caused by calling platform_get_resource() (bsc#1222660).
• CVE-2021-47182: Fixed buffer length handling in scsi_mode_sense() in scsi core (bsc#1222662).
• CVE-2021-47183: Fixed a null pointer dereference during link down processing in scsi lpfc (bsc#1192145, bsc#1222664).
• CVE-2021-47185: Fixed a softlockup issue in flush_to_ldisc in tty tty_buffer (bsc#1222669).
• CVE-2021-47189: Fixed denial of service due to memory ordering issues between normal and ordered work functions in btrfs (bsc#1222706).
• CVE-2022-4744: Fixed double-free that could lead to DoS or privilege escalation in TUN/TAP device driver functionality (bsc#1209635).
• CVE-2022-48626: Fixed a potential use-after-free on remove path moxart (bsc#1220366).
• CVE-2022-48629: Fixed possible memory leak in qcom-rng (bsc#1220989).
• CVE-2022-48630: Fixed infinite loop on requests not multiple of WORD_SZ in crypto: qcom-rng (bsc#1220990).
• CVE-2023-0160: Fixed deadlock flaw in BPF that could allow a local user to potentially crash the system (bsc#1209657).
• CVE-2023-28746: Fixed Register File Data Sampling (bsc#1213456).
• CVE-2023-35827: Fixed a use-after-free issue in ravb_tx_timeout_work() (bsc#1212514).
• CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential information disclosure or a denial of service (bsc#1215221).
• CVE-2023-52447: Fixed map_fd_put_ptr() signature kABI workaround (bsc#1220251).
• CVE-2023-52450: Fixed NULL pointer dereference issue in upi_fill_topology() (bsc#1220237).
• CVE-2023-52453: Fixed data corruption in hisi_acc_vfio_pci (bsc#1220337).
• CVE-2023-52454: Fixed a kernel panic when host sends an invalid H2C PDU length…