CVE-2022-48884

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Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48884
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48884.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-48884
Related
Published
2024-08-21T07:15:04Z
Modified
2024-09-18T01:00:21Z
Summary
[none]
Details

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:nativequeuedspinlockslowpath+0x183/0x1d0 ... [ 2394.829505] Call Trace: [ 2394.830667] rawspinlockirq+0x23/0x26 [ 2394.831858] cmdstatuserr+0x55/0x110 [mlx5core] [ 2394.833020] mlx5accessreg+0xe7/0x150 [mlx5core] [ 2394.834175] mlx5queryportptys+0x78/0xa0 [mlx5core] [ 2394.835337] mlx5eethtoolgetlinkksettings+0x74/0x590 [mlx5core] [ 2394.836454] ? kmemcachealloctrace+0x140/0x1c0 [ 2394.837562] _rhcallgetlinkksettings+0x33/0x100 [ 2394.838663] ? _rtnlunlock+0x25/0x50 [ 2394.839755] _ethtoolgetlinkksettings+0x72/0x150 [ 2394.840862] duplexshow+0x6e/0xc0 [ 2394.841963] devattrshow+0x1c/0x40 [ 2394.843048] sysfskfseqshow+0x9b/0x100 [ 2394.844123] seqread+0x153/0x410 [ 2394.845187] vfsread+0x91/0x140 [ 2394.846226] ksysread+0x4f/0xb0 [ 2394.847234] dosyscall64+0x5b/0x1a0 [ 2394.848228] entrySYSCALL64afterhwframe+0x65/0xca

References

Affected packages

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.7-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.7-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}