Unrated severityNVD Advisory· Published Aug 21, 2024· Updated May 4, 2025

net/mlx5: Fix command stats access after free

CVE-2022-48884

Description

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

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

Affected products

osv-coords48 versions
pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%20Micro%205.5 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%20Micro%205.5 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%20Micro%205.5 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.5 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP5 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-livepatch-SLE15-SP5-RT_Update_19&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_19&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5
< 5.14.21-150500.55.80.1+ 47 more
- (no CPE)range: < 5.14.21-150500.55.80.1
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.33.66.1
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2.150500.6.35.6
- (no CPE)range: < 5.14.21-150500.55.80.2.150500.6.35.6
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.1
- (no CPE)range: < 5.14.21-150500.55.80.1
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.33.66.1
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.33.66.1
- (no CPE)range: < 5.14.21-150500.55.80.1
- (no CPE)range: < 5.14.21-150500.13.67.1
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.33.66.1
- (no CPE)range: < 5.14.21-150500.55.80.2.150500.6.35.6
- (no CPE)range: < 5.14.21-150500.55.80.2.150500.6.35.6
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 1-150500.11.3.2
- (no CPE)range: < 1-150500.11.3.2
- (no CPE)range: < 5.14.21-150500.55.80.1
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.33.66.1
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.55.80.2
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.13.67.3
- (no CPE)range: < 5.14.21-150500.33.66.1
- (no CPE)range: < 5.14.21-150500.55.80.1
- (no CPE)range: < 5.14.21-150500.13.67.1
- (no CPE)range: < 5.14.21-150500.55.80.2
Linux/Linuxcpe-rescue
Range: 5.18

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

News mentions

No linked articles in our index yet.

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