{"id":"CVE-2022-49688","summary":"afs: Fix dynamic root getattr","details":"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-\u003evolume 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         \u003cTASK\u003e\n         vfs_statx+0x79/0xf5\n         vfs_fstatat+0x49/0x62","modified":"2026-04-02T08:27:50.972389Z","published":"2025-02-26T02:24:13.686Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1241-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49688.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49688.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49688"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"b76ea7c06b24dcf97ea3379b6957d5b99c346ea0"},{"fixed":"65c24caf1b9f5b08397c6e805ec24ebc390c6e4d"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"dba1941f5bc3de6b460685155b89ae1182824fc8"},{"fixed":"e3a232e5767051483ffad4cef7d0a89d292a192b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"61a4cc41e5c1b77d05a12798f8032050aa75f3c8"},{"fixed":"7b564e3254b7db5fbfbf11a824627a6c31b932b4"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"94bf8bfb009fad247d02f12e4c443411c8445412"},{"fixed":"2b2bba96526f25f2eba74ecadb031de2e05a83ce"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2aeb8c86d49967552394d5e723f87454cb53f501"},{"fixed":"7844ceada44eca740d31beb3d97b8511b1ca0a9b"},{"fixed":"cb78d1b5efffe4cf97e16766329dd7358aed3deb"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"9e655a8b874d7c56e02938ddb221b16e293793df"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49688.json"}}],"schema_version":"1.7.5"}