xsk: tighten UMEM headroom validation to account for tailroom and min frame (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.14 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: xsk: tighten UMEM headroom validation to account for tailroom and min frame The current headroom validation in xdp_umem_reg() could leave us with insufficient space dedicated to even receive minimum-sized ethernet frame. Furthermore if multi-buffer would come to play then skb_shared_info stored at the end of XSK frame would be corrupted. HW typically works with 128-aligned sizes so let us provide this value as bare minimum. Multi-buffer setting is known later in the configuration process so besides accounting for 128 bytes, let us also take care of tailroom space upfront.
Weaknesses (CWE)
- CWE-787 — Out-of-bounds Write
References
- https://git.kernel.org/stable/c/5f123bc278bf4e3283d8606321bebbfd299f4384
- https://git.kernel.org/stable/c/1a6051cd7e3e4c54ff3854a43b638b9292af5e67
- https://git.kernel.org/stable/c/8769708add9eadeea8041a9761771bb715a87104
- https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f
- https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1
- https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12
- https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39
- https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-27597
- GCVE · GCVE-0-2026-43093
CERT-FR advisories
- CERTFR-2026-AVI-1298 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1093 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0985 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0956 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0927 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0900 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0864 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0862 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.19.118 < 4.20cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.4.35 < 5.5cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.6.7 < 5.7cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.7.1 < 6.6.136cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.83cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.24cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.14cpe:2.3:o:linux:linux_kernel:5.7:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.7:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.7:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.7:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.7:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.7:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.7:rc7:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 99e3a236dd43d06c65af0a2ef9cb44306aef6e02 < 5f123bc278bf4e3283d8606321bebbfd299f4384 ; affected 99e3a236dd43d06c65af0a2ef9cb44306aef6e02 < 1a6051cd7e3e4c54ff3854a43b638b9292af5e67 ; affected 99e3a236dd43d06c65af0a2ef9cb44306aef6e02 < 8769708add9eadeea8041a9761771bb715a87104 ; affected 99e3a236dd43d06c65af0a2ef9cb44306aef6e02 < a03975beb9f6af0d8ac051e30b2abeabe618414f ; affected 99e3a236dd43d06c65af0a2ef9cb44306aef6e02 < 0ec4d3f6e6934deb843b561ae048cd17218e5ad1 ; affected 99e3a236dd43d06c65af0a2ef9cb44306aef6e02 < 9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12 |
| Linux · Linux | affected 5.7 ; unaffected 0 < 5.7 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.136 ≤ 6.6.* |
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 |