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CVE-2022-49688 The advisory has been revoked - it doesn't affect any version of package kernel-cross-headers  (opens in a new tab)

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0.09% (27th percentile)

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  • Snyk IDSNYK-RHEL9-KERNELCROSSHEADERS-10169058
  • published15 May 2025
  • disclosed26 Feb 2025
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Introduced: 26 Feb 2025

CVE-2022-49688  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-cross-headers package and not the kernel-cross-headers package as distributed by RHEL.

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

afs: Fix dynamic root getattr

The recent patch to make afs_getattr consult the server didn't account for the pseudo-inodes employed by the dynamic root-type afs superblock not having a volume or a server to access, and thus an oops occurs if such a directory is stat'd.

Fix this by checking to see if the vnode->volume pointer actually points anywhere before following it in afs_getattr().

This can be tested by stat'ing a directory in /afs. It may be sufficient just to do "ls /afs" and the oops looks something like:

    BUG: kernel NULL pointer dereference, address: 0000000000000020
    ...
    RIP: 0010:afs_getattr+0x8b/0x14b
    ...
    Call Trace:
     <TASK>
     vfs_statx+0x79/0xf5
     vfs_fstatat+0x49/0x62