CVE-2022-49395

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

ath5k: fix OOB in ath5k_eeprom_read_pcal_info_5111

The bug was found during fuzzing. Stacktrace locates it in ath5k_eeprom_convert_pcal_info_5111. When none of the curve is selected in the loop, idx can go up to AR5K_EEPROM_N_PD_CURVES. The line makes pd out of bound. pd = &chinfo[pier].pd_curves[idx];

There are many OOB writes using pd later in the code. So I added a sanity check for idx. Checks for other loops involving AR5K_EEPROM_N_PD_CURVES are not needed as the loop index is not used outside the loops.

The patch is NOT tested with real device.

The following is the fuzzing report

BUG: KASAN: slab-out-of-bounds in ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k] Write of size 1 at addr ffff8880174a4d60 by task modprobe/214

CPU: 0 PID: 214 Comm: modprobe Not tainted 5.6.0 #1 Call Trace: dump_stack+0x76/0xa0 print_address_description.constprop.0+0x16/0x200 ? ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k] ? ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k] __kasan_report.cold+0x37/0x7c ? ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k] kasan_report+0xe/0x20 ath5k_eeprom_read_pcal_info_5111+0x126a/0x1390 [ath5k] ? apic_timer_interrupt+0xa/0x20 ? ath5k_eeprom_init_11a_pcal_freq+0xbc0/0xbc0 [ath5k] ? ath5k_pci_eeprom_read+0x228/0x3c0 [ath5k] ath5k_eeprom_init+0x2513/0x6290 [ath5k] ? ath5k_eeprom_init_11a_pcal_freq+0xbc0/0xbc0 [ath5k] ? usleep_range+0xb8/0x100 ? apic_timer_interrupt+0xa/0x20 ? ath5k_eeprom_read_pcal_info_2413+0x2f20/0x2f20 [ath5k] ath5k_hw_init+0xb60/0x1970 [ath5k] ath5k_init_ah+0x6fe/0x2530 [ath5k] ? kasprintf+0xa6/0xe0 ? ath5k_stop+0x140/0x140 [ath5k] ? _dev_notice+0xf6/0xf6 ? apic_timer_interrupt+0xa/0x20 ath5k_pci_probe.cold+0x29a/0x3d6 [ath5k] ? ath5k_pci_eeprom_read+0x3c0/0x3c0 [ath5k] ? mutex_lock+0x89/0xd0 ? ath5k_pci_eeprom_read+0x3c0/0x3c0 [ath5k] local_pci_probe+0xd3/0x160 pci_device_probe+0x23f/0x3e0 ? pci_device_remove+0x280/0x280 ? pci_device_remove+0x280/0x280 really_probe+0x209/0x5d0(CVE-2021-47633)

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

scsi: zorro7xx: Fix a resource leak in zorro7xx_remove_one()

The error handling path of the probe releases a resource that is not freed in the remove function. In some cases, a ioremap() must be undone.

Add the missing iounmap() call in the remove function.(CVE-2022-49095)

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

ath9k_htc: fix uninit value bugs

Syzbot reported 2 KMSAN bugs in ath9k. All of them are caused by missing field initialization.

In htc_connect_service() svc_meta_len and pad are not initialized. Based on code it looks like in current skb there is no service data, so simply initialize svc_meta_len to 0.

htc_issue_send() does not initialize htc_frame_hdr::control array. Based on firmware code, it will initialize it by itself, so simply zero whole array to make KMSAN happy

Fail logs:

BUG: KMSAN: kernel-usb-infoleak in usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 usb_submit_urb+0x6c1/0x2aa0 drivers/usb/core/urb.c:430 hif_usb_send_regout drivers/net/wireless/ath/ath9k/hif_usb.c:127 [inline] hif_usb_send+0x5f0/0x16f0 drivers/net/wireless/ath/ath9k/hif_usb.c:479 htc_issue_send drivers/net/wireless/ath/ath9k/htc_hst.c:34 [inline] htc_connect_service+0x143e/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:275 ...

Uninit was created at: slab_post_alloc_hook mm/slab.h:524 [inline] slab_alloc_node mm/slub.c:3251 [inline] __kmalloc_node_track_caller+0xe0c/0x1510 mm/slub.c:4974 kmalloc_reserve net/core/skbuff.c:354 [inline] __alloc_skb+0x545/0xf90 net/core/skbuff.c:426 alloc_skb include/linux/skbuff.h:1126 [inline] htc_connect_service+0x1029/0x1960 drivers/net/wireless/ath/ath9k/htc_hst.c:258 ...

Bytes 4-7 of 18 are uninitialized Memory access of size 18 starts at…

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: um: Fix out-of-bounds read in LDT setup (CVE-2022-49395)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: um: Fix out-of-bounds read in LDT setup (CVE-2022-49395)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes. ================================================================== BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: um: Fix out-of-bounds read in LDT setup (CVE-2022-49395)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: um: Fix out-of-bounds read in LDT setup (CVE-2022-49395)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

• Bionic update: upstream stable patchset 2022-04-13 (LP: #1968932) // CVE- url: https://ubuntu.com/security/CVE-2022-23041
  • xen/gnttab: fix gnttab_end_foreign_access() without page specified
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-49850
  • nilfs2: fix deadlock in nilfs_count_free_blocks()
• CVE-url: https://ubuntu.com/security/CVE-2024-42305
  • ext4: check dot and dotdot of dx_root before making dir indexed
• CVE-url: https://ubuntu.com/security/CVE-2024-53168
  • sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
• CVE-url: https://ubuntu.com/security/CVE-2024-26915
  • drm/amdgpu: Add check to prevent IH overflow
  • drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
• CVE-url: https://ubuntu.com/security/CVE-2024-56770
  • net/sched: netem: account for backlog updates from child qdisc
  • netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
• Bionic update: upstream stable patchset 2022-01-14 (LP: #1957957) // CVE- url: https://ubuntu.com/security/CVE-2021-47587
  • net: systemport: Add global locking for descriptor lifecycle
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46959
  • spi: Fix use-after-free with devm_spi_alloc_*
• CVE-url: https://ubuntu.com/security/CVE-2024-26689
  • ceph: prevent use-after-free in encode_cap_msg()
• CVE-url: https://ubuntu.com/security/CVE-2024-53066
  • nfs: Fix KMSAN warning in decode_getfattr_attrs()
• CVE-url: https://ubuntu.com/security/CVE-2024-49944
  • sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
• CVE-url: https://ubuntu.com/security/CVE-2024-50237
  • wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
• CVE-url: https://ubuntu.com/security/CVE-2024-46780
  • nilfs2: protect references to superblock parameters exposed in sysfs
• CVE-url: https://ubuntu.com/security/CVE-2024-53063
  • media: dvbdev: prevent the risk of out of memory access
  • media: dvbdev: fix the logic when DVB_DYNAMIC_MINORS is not set
• CVE-url: https://ubuntu.com/security/CVE-2021-47150
  • net: fec: fix the potential memory leak in fec_enet_init()
• CVE-url: https://ubuntu.com/security/CVE-2024-53140
  • netlink: terminate outstanding dump on socket close
• CVE-url: https://ubuntu.com/security/CVE-2025-21971
  • net_sched: Prevent creation of classes with TC_H_ROOT
• CVE-url: https://ubuntu.com/security/CVE-2023-52572
  • cifs: Fix UAF in cifs_demultiplex_thread()
• CVE-url: https://ubuntu.com/security/CVE-2025-37785
  • ext4: fix OOB read when checking dotdot dir
• Bionic update: upstream stable patchset 2021-07-14 (LP: #1936231) // CVE- url: https://ubuntu.com/security/CVE-2021-47277
  • kvm: avoid speculation-based attacks from out-of-range memslot accesses
• CVE-url: https://ubuntu.com/security/CVE-2022-49740
  • wifi: brcmfmac: Check the count value of channel spec to prevent out-of- bounds reads
• Bionic update: upstream stable patchset 2022-07-25 (LP: #1982782) // CVE- url: https://ubuntu.com/security/CVE-2022-49404
  • RDMA/hfi1: Fix potential integer multiplication overflow errors
• Bionic update: upstream stable patchset 2023-03-03 (LP: #2009237) // CVE- url: https://ubuntu.com/security/CVE-2022-49757
  • EDAC/highbank: Fix memory leak in highbank_mc_probe()
• Bionic update: upstream stable patchset 2022-07-25 (LP: #1982782) // CVE- url: https://ubuntu.com/security/CVE-2022-49395
  • um: Fix out-of-bounds read in LDT setup
• CVE-url: https://ubuntu.com/security/CVE-2022-49738
  • f2fs: fix to do sanity check on summary info
  • f2fs: should put a page when checking the summary info
  • f2fs: fix to do sanity check on i_extra_isize in is_alive()
• CVE-url:…

• udf: Fix a slab-out-of-bounds write bug in udf_find_entry() {CVE-2022-49846}
• Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set {CVE-2022-49136}
• Bluetooth: Fix use after free in hci_send_acl {CVE-2022-49111}
• NFSv4/pnfs: Fix a use-after-free bug in open {CVE-2022-50072}
• NFSv4: Don't hold the layoutget locks across multiple RPC calls {CVE-2022-50072}
• ndisc: use RCU protection in ndisc_alloc_skb() {CVE-2025-21764}
• cifs: fix double free race when mount fails in cifs_get_root() {CVE-2022-48919}
• udmabuf: fix a buf size overflow issue during udmabuf creation {CVE-2025-37803}
• um: Fix out-of-bounds read in LDT setup {CVE-2022-49395}
• rtw89: cfo: check mac_id to avoid out-of-bounds {CVE-2022-49471}
• vsock: Keep the binding until socket destruction {CVE-2025-21756}
• net/mlx5: Always stop health timer during driver removal {CVE-2024-40906}
• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd {CVE-2025-21969}
• drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() {CVE-2025-21780}
• drm: nv04: Fix out of bounds access {CVE-2024-27008}
• parport: Proper fix for array out-of-bounds access {CVE-2024-50074}
• sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket {CVE-2024-53168}
• net: make sock_inuse_add() available {CVE-2024-53168}
• drm/amdgpu: fix possible UAF in amdgpu_cs_pass1() {CVE-2023-52921}

The SUSE Linux Enterprise 12 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-2021-47645: media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com (bsc#1237767).
• CVE-2021-47648: gpu: host1x: Fix a memory leak in 'host1x_remove()' (bsc#1237725).
• CVE-2022-49046: i2c: dev: check return value when calling dev_set_name() (bsc#1237842).
• CVE-2022-49051: net: usb: aqc111: Fix out-of-bounds accesses in RX fixup (bsc#1237903).
• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49059: nfc: nci: add flush_workqueue to prevent uaf (bsc#1238007).
• CVE-2022-49074: irqchip/gic-v3: Fix GICR_CTLR.RWP polling (bsc#1237728).
• CVE-2022-49075: btrfs: fix qgroup reserve overflow the qgroup limit (bsc#1237733).
• CVE-2022-49084: qede: confirm skb is allocated before using (bsc#1237751).
• CVE-2022-49107: ceph: fix memory leak in ceph_readdir when note_last_dentry returns error (bsc#1237973).
• CVE-2022-49109: ceph: fix inode reference leakage in ceph_get_snapdir() (bsc#1237836).
• CVE-2022-49119: scsi: pm8001: Fix memory leak in pm8001_chip_fw_flash_update_req() (bsc#1237925).
• CVE-2022-49120: scsi: pm8001: Fix task leak in pm8001_send_abort_all() (bsc#1237969).
• CVE-2022-49209: bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full (bsc#1238252).
• CVE-2022-49220: dax: make sure inodes are flushed before destroy cache (bsc#1237936).
• CVE-2022-49275: can: m_can: m_can_tx_handler(): fix use after free of skb (bsc#1238719).
• CVE-2022-49286: tpm: use try_get_ops() in tpm-space.c (bsc#1238647).
• CVE-2022-49292: ALSA: oss: Fix PCM OSS buffer allocation overflow (bsc#1238625).
• CVE-2022-49308: extcon: Modify extcon device to be created after driver data is set (bsc#1238654).
• CVE-2022-49331: nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling (bsc#1237813).
• CVE-2022-49344: af_unix: Fix a data-race in unix_dgram_peer_wake_me() (bsc#1237988).
• CVE-2022-49367: net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register (bsc#1238447).
• CVE-2022-49370: firmware: dmi-sysfs: Fix memory leak in dmi_sysfs_register_handle (bsc#1238467).
• CVE-2022-49372: tcp: tcp_rtx_synack() can be called from process context (bsc#1238251).
• CVE-2022-49388: ubi: ubi_create_volume: Fix use-after-free when volume creation failed (bsc#1237934).
• CVE-2022-49395: um: Fix out-of-bounds read in LDT setup (bsc#1237953).
• CVE-2022-49397: phy: qcom-qmp: fix struct clk leak on probe errors (bsc#1237823).
• CVE-2022-49404: RDMA/hfi1: Fix potential integer multiplication overflow errors (bsc#1238430).
• CVE-2022-49416: wifi: mac80211: fix use-after-free in chanctx code (bsc#1238293).
• CVE-2022-49433: RDMA/hfi1: Prevent use of lock before it is initialized (bsc#1238268).
• CVE-2022-49472: net: phy: micrel: Allow probing without .driver_data (bsc#1238951).
• CVE-2022-49488: drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock (bsc#1238600).
• CVE-2022-49495: drm/msm/hdmi: check return value after calling platform_get_resource_byname() (bsc#1237932).
• CVE-2022-49497: net: remove two BUG() from skb_checksum_help() (bsc#1238946).
• CVE-2022-49505: NFC: NULL out the dev->rfkill to prevent UAF (bsc#1238615).
• CVE-2022-49516: ice: always check VF VSI pointer values (bsc#1238953).
• CVE-2022-49519: ath10k: skip ath10k_halt during suspend for driver state RESTARTING (bsc#1238943).
• CVE-2022-49524: media: pci: cx23885: Fix the error handling in cx23885_initdev() (bsc#1238949).
• CVE-2022-49530: drm/amd/pm: fix double free in si_parse_power_table() (bsc#1238944).
• CVE-2022-49538: ALSA: jack: Fix mutex call in snd_jack_report() (bsc#1238843).
• CVE-2022-49544: ipw2x00: Fix potential NULL dereference in libipw_xmit() (bsc#1238721).
• CVE-2022-49545: ALSA: usb-audio: Cancel pending work at closing a MIDI substream (bsc#1238729). -…