CVE-2022-49220

In the Linux kernel, the following vulnerability has been resolved: dax: make sure inodes are flushed before destroy cache A bug can be triggered by following command $ modprobe nd_pmem && modprobe -r nd_pmem [ 10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown() [ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node) [ 10.062433] Call Trace: [ 10.062673] dump_stack_lvl+0x34/0x44 [ 10.062865] slab_err+0x90/0xd0 [ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0 [ 10.063848] kmem_cache_destroy+0x4a/0x110 [ 10.064058] __x64_sys_delete_module+0x265/0x300 This is caused by dax_fs_exit() not flushing inodes before destroy cache. To fix this issue, call rcu_barrier() before destroy cache.

• smb: client: reject userspace cifs.spnego descriptions
• mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash {CVE-2024-35854}
• cifs: Fix memory leak when build ntlmssp negotiate blob failed {CVE-2022-50372}
• scsi: lpfc: Check kzalloc() in lpfc_sli4_cgn_params_read() {CVE-2023-53038}
• drm/amd/display: Do not set DRR on pipe Commit {CVE-2023-53042}
• tcp: fix skb_copy_ubufs() vs BIG TCP {CVE-2023-53669}
• clk: Fix clk_core_get NULL dereference {CVE-2024-27038}
• drm/amd/display: Check null pointers before using dc->clk_mgr {CVE-2024-49907}
• bpf: reject unhashed sockets in bpf_sk_assign {CVE-2023-53585}
• driver core: fix resource leak in device_add() {CVE-2023-53594}
• wifi: ath9k: hif_usb: fix memory leak of remain_skbs {CVE-2023-53641}
• wifi: ath9k: verify the expected usb_endpoints are present {CVE-2022-50297}
• drm/amd/display: Fix potential null-deref in dm_resume {CVE-2022-50535}
• ext4: don't allow journal inode to have encrypt flag {CVE-2022-50277}
• tls: get psock ref after taking rxlock to avoid leak {CVE-2024-35908}
• cpumap: Zero-initialise xdp_rxq_info struct before running XDP program {CVE-2024-27431}
• bpf: Guard stack limits against 32bit overflow {CVE-2023-52676}
• can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible() {CVE-2021-47457}
• serial: core: fix transmit-buffer reset and memleak {CVE-2021-47527}
• cpufreq: exit() callback is optional {CVE-2024-38615}
• ext4: fix mb_cache_entry's e_refcnt leak in ext4_xattr_block_cache_find() {CVE-2024-39276}
• tcp: defer shutdown(SEND_SHUTDOWN) for TCP_SYN_RECV sockets {CVE-2024-36905}
• wifi: nl80211: reject iftype change with mesh ID change {CVE-2024-27410}
• tcp: do not accept ACK of bytes we never sent {CVE-2023-52881}
• crypto: pcrypt - Fix hungtask for PADATA_RESET {CVE-2023-52813}
• net/mlx5: Properly link new fs rules into the tree {CVE-2024-35960}
• usb: ulpi: fix memory leak on ulpi_register() error paths
• usb: ulpi: fix double free in ulpi_register_interface() error path {CVE-2026-31759}
• wifi: ath11k: fix htt pktlog locking {CVE-2023-52800}
• net_sched: cls_flow: validate TCA_FLOW_RSHIFT attribute {CVE-2025-21653}
• calipso: fix memory leak in netlbl_calipso_add_pass() {CVE-2023-52698}
• wifi: iwlwifi: mvm: avoid NULL pointer dereference {CVE-2024-49929}
• ext4: update orig_path in ext4_find_extent() {CVE-2024-49881}
• drm/vmwgfx: Fix a deadlock in dma buf fence polling {CVE-2024-43863}
• RDMA/restrack: Fix potential invalid address access {CVE-2024-42080}
• net: can: j1939: Initialize unused data in j1939_send_one() {CVE-2024-42076}
• nfsd: clear acl_access/acl_default after releasing them {CVE-2025-21796}
• rtc: pl031: fix rtc features null pointer dereference {CVE-2022-49273}
• net: veth: clear GRO when clearing XDP even when down {CVE-2024-26803}
• coresight: cti: Fix hang in cti_disable_hw() {CVE-2022-50491}
• scsi: qla2xxx: Fix deletion race condition {CVE-2023-53615}
• iw_cxgb4: Fix potential NULL dereference in c4iw_fill_res_cm_id_entry() {CVE-2023-53476}
• scsi: qla2xxx: Fix potential NULL pointer dereference {CVE-2023-53451}
• usb: ucsi_acpi: Increase the command completion timeout {CVE-2023-53168}
• drivers: base: dd: fix memory leak with using debugfs_lookup() {CVE-2023-53390}
• USB: fix memory leak with using debugfs_lookup() {CVE-2023-53359}
• PM: domains: fix memory leak with using debugfs_lookup() {CVE-2023-53202}
• drm/client: Fix memory leak in drm_client_modeset_probe {CVE-2023-53288}
• drivers: base: component: fix memory leak with using debugfs_lookup() {CVE-2023-53409}
• USB: uhci: fix memory leak with using debugfs_lookup() {CVE-2023-53197}
• media: uvcvideo: Handle cameras with invalid descriptors {CVE-2023-53437}
• arm64: csum: Fix OoB access in IP checksum code for negative lengths {CVE-2023-53726}
• bnxt: Do not read past the end of test names {CVE-2023-53010}
• dax: make sure inodes are flushed before destroy cache {CVE-2022-49220}
• cifs: Fix oops due to uncleared server->smbd_conn…

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

dax: make sure inodes are flushed before destroy cache

A bug can be triggered by following command

$ modprobe nd_pmem && modprobe -r nd_pmem

[ 10.060014] BUG dax_cache (Not tainted): Objects remaining in dax_cache on __kmem_cache_shutdown() [ 10.060938] Slab 0x0000000085b729ac objects=9 used=1 fp=0x000000004f5ae469 flags=0x200000000010200(slab|head|node) [ 10.062433] Call Trace: [ 10.062673] dump_stack_lvl+0x34/0x44 [ 10.062865] slab_err+0x90/0xd0 [ 10.063619] __kmem_cache_shutdown+0x13b/0x2f0 [ 10.063848] kmem_cache_destroy+0x4a/0x110 [ 10.064058] __x64_sys_delete_module+0x265/0x300

This is caused by dax_fs_exit() not flushing inodes before destroy cache. To fix this issue, call rcu_barrier() before destroy cache.

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). -…