CVE-2022-48884— net/mlx5: Fix command stats access after free
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I. Basic Information for CVE-2022-48884
Vulnerability Information
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Vulnerability Title
net/mlx5: Fix command stats access after free
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix command stats access after free Command may fail while driver is reloading and can't accept FW commands till command interface is reinitialized. Such command failure is being logged to command stats. This results in NULL pointer access as command stats structure is being freed and reallocated during mlx5 devlink reload (see kernel log below). Fix it by making command stats statically allocated on driver probe. Kernel log: [ 2394.808802] BUG: unable to handle kernel paging request at 000000000002a9c0 [ 2394.810610] PGD 0 P4D 0 [ 2394.811811] Oops: 0002 [#1] SMP NOPTI ... [ 2394.815482] RIP: 0010:native_queued_spin_lock_slowpath+0x183/0x1d0 ... [ 2394.829505] Call Trace: [ 2394.830667] _raw_spin_lock_irq+0x23/0x26 [ 2394.831858] cmd_status_err+0x55/0x110 [mlx5_core] [ 2394.833020] mlx5_access_reg+0xe7/0x150 [mlx5_core] [ 2394.834175] mlx5_query_port_ptys+0x78/0xa0 [mlx5_core] [ 2394.835337] mlx5e_ethtool_get_link_ksettings+0x74/0x590 [mlx5_core] [ 2394.836454] ? kmem_cache_alloc_trace+0x140/0x1c0 [ 2394.837562] __rh_call_get_link_ksettings+0x33/0x100 [ 2394.838663] ? __rtnl_unlock+0x25/0x50 [ 2394.839755] __ethtool_get_link_ksettings+0x72/0x150 [ 2394.840862] duplex_show+0x6e/0xc0 [ 2394.841963] dev_attr_show+0x1c/0x40 [ 2394.843048] sysfs_kf_seq_show+0x9b/0x100 [ 2394.844123] seq_read+0x153/0x410 [ 2394.845187] vfs_read+0x91/0x140 [ 2394.846226] ksys_read+0x4f/0xb0 [ 2394.847234] do_syscall_64+0x5b/0x1a0 [ 2394.848228] entry_SYSCALL_64_after_hwframe+0x65/0xca
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 net/mlx5 组件在驱动重新加载后访问已释放的命令统计信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-48884
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Same Patch Batch · Linux · 2024-08-21 · 69 CVEs total
| CVE-2022-48876 | wifi: mac80211: fix initialization of rx->link and rx->link_sta | |
| CVE-2024-43874 | crypto: ccp - Fix null pointer dereference in __sev_snp_shutdown_locked | |
| CVE-2024-43873 | vhost/vsock: always initialize seqpacket_allow | |
| CVE-2024-43875 | PCI: endpoint: Clean up error handling in vpci_scan_bus() | |
| CVE-2022-48870 | tty: fix possible null-ptr-defer in spk_ttyio_release | |
| CVE-2022-48871 | tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer | |
| CVE-2022-48872 | misc: fastrpc: Fix use-after-free race condition for maps | |
| CVE-2022-48873 | misc: fastrpc: Don't remove map on creater_process and device_release | |
| CVE-2022-48874 | misc: fastrpc: Fix use-after-free and race in fastrpc_map_find | |
| CVE-2022-48875 | wifi: mac80211: sdata can be NULL during AMPDU start | |
| CVE-2022-48869 | USB: gadgetfs: Fix race between mounting and unmounting | |
| CVE-2022-48877 | f2fs: let's avoid panic if extent_tree is not created | |
| CVE-2022-48878 | Bluetooth: hci_qca: Fix driver shutdown on closed serdev | |
| CVE-2022-48879 | efi: fix NULL-deref in init error path | |
| CVE-2022-48880 | platform/surface: aggregator: Add missing call to ssam_request_sync_free() | |
| CVE-2022-48881 | platform/x86/amd: Fix refcount leak in amd_pmc_probe | |
| CVE-2022-48882 | net/mlx5e: Fix macsec possible null dereference when updating MAC security entity (SecY) | |
| CVE-2022-48883 | net/mlx5e: IPoIB, Block PKEY interfaces with less rx queues than parent | |
| CVE-2022-48885 | ice: Fix potential memory leak in ice_gnss_tty_write() | |
| CVE-2022-48886 | ice: Add check for kzalloc |
Showing top 20 of 69 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2022-48884
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