NFSD: Fix ia_size underflow (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.63 % · percentile 50 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix ia_size underflow iattr::ia_size is a loff_t, which is a signed 64-bit type. NFSv3 and NFSv4 both define file size as an unsigned 64-bit type. Thus there is a range of valid file size values an NFS client can send that is already larger than Linux can handle. Currently decode_fattr4() dumps a full u64 value into ia_size. If that value happens to be larger than S64_MAX, then ia_size underflows. I'm about to fix up the NFSv3 behavior as well, so let's catch the underflow in the common code path: nfsd_setattr().
Weaknesses (CWE)
- CWE-191 — Integer Underflow (Wrap or Wraparound)
References
- https://git.kernel.org/stable/c/d2211e6e34d0755f35e2f8c22d81999fa81cfc71
- https://git.kernel.org/stable/c/38d02ba22e43b6fc7d291cf724bc6e3b7be6626b
- https://git.kernel.org/stable/c/8e0ecaf7a7e57b30284d6b3289cc436100fadc48
- https://git.kernel.org/stable/c/da22ca1ad548429d7822011c54cfe210718e0aa7
- https://git.kernel.org/stable/c/e6faac3f58c7c4176b66f63def17a34232a17b0e
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | Linux |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
| 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-2022-53707
- GCVE · GCVE-0-2022-48828
CERT-FR advisories
- CERTFR-2025-AVI-0677 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0717 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0695 — Multiples vulnérabilités dans le noyau Linux de Red Hat · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0693 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*< 5.4.295cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.220cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.24cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.16.10cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d2211e6e34d0755f35e2f8c22d81999fa81cfc71 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 38d02ba22e43b6fc7d291cf724bc6e3b7be6626b ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8e0ecaf7a7e57b30284d6b3289cc436100fadc48 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < da22ca1ad548429d7822011c54cfe210718e0aa7 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e6faac3f58c7c4176b66f63def17a34232a17b0e |
| Linux · Linux | affected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 5.4.295 ≤ 5.4.* ; unaffected 5.10.220 ≤ 5.10.* ; unaffected 5.15.24 ≤ 5.15.* ; unaffected 5.16.10 ≤ 5.16.* |
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 |