{"cve":"CVE-2022-49688","nvd":{"published":"2025-02-26T07:01:43.617","modified":"2026-06-17T05:18:52.167","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix dynamic root getattr\n\nThe recent patch to make afs_getattr consult the server didn't account\nfor the pseudo-inodes employed by the dynamic root-type afs superblock\nnot having a volume or a server to access, and thus an oops occurs if\nsuch a directory is stat'd.\n\nFix this by checking to see if the vnode->volume pointer actually points\nanywhere before following it in afs_getattr().\n\nThis can be tested by stat'ing a directory in /afs.  It may be\nsufficient just to do \"ls /afs\" and the oops looks something like:\n\n        BUG: kernel NULL pointer dereference, address: 0000000000000020\n        ...\n        RIP: 0010:afs_getattr+0x8b/0x14b\n        ...\n        Call Trace:\n         <TASK>\n         vfs_statx+0x79/0xf5\n         vfs_fstatat+0x49/0x62","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["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"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49688","score":0.00298,"percentile":0.22573,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}