CVE - CVE-2022-49688

CVE-ID
CVE-2022-49688	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce URL:https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce MISC:https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d URL:https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d MISC:https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b URL:https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b MISC:https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4 URL:https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4 MISC:https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb URL:https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb MISC:https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b URL:https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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