CVE-2022-49688
afs: Fix dynamic root getattr
At a glance
- Source
- NVD
- EPSS
- EPSS 0.30 % · percentile 22 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
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
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://git.kernel.org/stable/c/65c24caf1b9f5b08397c6e805ec24ebc390c6e4d
- https://git.kernel.org/stable/c/e3a232e5767051483ffad4cef7d0a89d292a192b
- https://git.kernel.org/stable/c/7b564e3254b7db5fbfbf11a824627a6c31b932b4
- https://git.kernel.org/stable/c/2b2bba96526f25f2eba74ecadb031de2e05a83ce
- https://git.kernel.org/stable/c/7844ceada44eca740d31beb3d97b8511b1ca0a9b
- https://git.kernel.org/stable/c/cb78d1b5efffe4cf97e16766329dd7358aed3deb
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2022-54545
- GCVE · GCVE-0-2022-49688
CERT-FR advisories
- CERTFR-2025-AVI-1057 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0336 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0307 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0252 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.245 < 4.19.250cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4.196 < 5.4.202cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10.118 < 5.10.127cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.15.42 < 5.15.51cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.17.10 < 5.18cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.18.1 < 5.18.8cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.19:rc3:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected b76ea7c06b24dcf97ea3379b6957d5b99c346ea0 < 65c24caf1b9f5b08397c6e805ec24ebc390c6e4d ; affected dba1941f5bc3de6b460685155b89ae1182824fc8 < e3a232e5767051483ffad4cef7d0a89d292a192b ; affected 61a4cc41e5c1b77d05a12798f8032050aa75f3c8 < 7b564e3254b7db5fbfbf11a824627a6c31b932b4 ; affected 94bf8bfb009fad247d02f12e4c443411c8445412 < 2b2bba96526f25f2eba74ecadb031de2e05a83ce ; affected 2aeb8c86d49967552394d5e723f87454cb53f501 < 7844ceada44eca740d31beb3d97b8511b1ca0a9b ; affected 2aeb8c86d49967552394d5e723f87454cb53f501 < cb78d1b5efffe4cf97e16766329dd7358aed3deb |
| Linux · Linux | affected 5.18 ; unaffected 0 < 5.18 ; unaffected 4.19.250 ≤ 4.19.* ; unaffected 5.4.202 ≤ 5.4.* ; unaffected 5.10.127 ≤ 5.10.* ; unaffected 5.15.51 ≤ 5.15.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |