CVE-2022-49688

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

The following products are affected by CVE-2022-49688 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2022-49688.

URL	Resource
https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce
https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d
https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b
https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4
https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb
https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b
https://lore.kernel.org/linux-cve-announce/2025022627-CVE-2022-49688-5c71@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2022-49688
https://www.cve.org/CVERecord?id=CVE-2022-49688