x86/kexec: add a sanity check on previous kernel's ima kexec buffer (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.12 % · centile 2 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: x86/kexec: add a sanity check on previous kernel's ima kexec buffer When the second-stage kernel is booted via kexec with a limiting command line such as "mem=<size>", the physical range that contains the carried over IMA measurement list may fall outside the truncated RAM leading to a kernel panic. BUG: unable to handle page fault for address: ffff97793ff47000 RIP: ima_restore_measurement_list+0xdc/0x45a #PF: error_code(0x0000) – not-present page Other architectures already validate the range with page_is_ram(), as done in commit cbf9c4b9617b ("of: check previous kernel's ima-kexec-buffer against memory bounds") do a similar check on x86. Without carrying the measurement list across kexec, the attestation would fail.
Références
- https://git.kernel.org/stable/c/37f18915a261afe84dab462624ed829cddb77a9b
- https://git.kernel.org/stable/c/22e460b6333a5f818b042ac89201f8e735556f4a
- https://git.kernel.org/stable/c/7e2476057950c174c7b2c2802246707bbfb497e4
- https://git.kernel.org/stable/c/f8f73bf0f8a57ee9b86792456bd42079bc98c6b7
- https://git.kernel.org/stable/c/d4a132f121c591b60dbaf57ea91f1faf11631fbc
- https://git.kernel.org/stable/c/4d7a8f5f28187e3d2958b2a134473da2665207e7
- https://git.kernel.org/stable/c/c5489d04337b47e93c0623e8145fcba3f5739efd
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| 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) |
Références européennes
- ENISA EUVD · EUVD-2026-27799
- GCVE · GCVE-0-2026-43240
Avis du CERT-FR
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1064 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0956 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0927 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.0 < 6.1.165cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.128cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.75cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.16cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.6
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected b69a2afd5afce9bf6d56e349d6ab592c916e20f2 < 37f18915a261afe84dab462624ed829cddb77a9b ; affected b69a2afd5afce9bf6d56e349d6ab592c916e20f2 < 22e460b6333a5f818b042ac89201f8e735556f4a ; affected b69a2afd5afce9bf6d56e349d6ab592c916e20f2 < 7e2476057950c174c7b2c2802246707bbfb497e4 ; affected b69a2afd5afce9bf6d56e349d6ab592c916e20f2 < f8f73bf0f8a57ee9b86792456bd42079bc98c6b7 ; affected b69a2afd5afce9bf6d56e349d6ab592c916e20f2 < d4a132f121c591b60dbaf57ea91f1faf11631fbc ; affected b69a2afd5afce9bf6d56e349d6ab592c916e20f2 < 4d7a8f5f28187e3d2958b2a134473da2665207e7 |
| Linux · Linux | affected 6.0 ; unaffected 0 < 6.0 ; unaffected 6.1.165 ≤ 6.1.* ; unaffected 6.6.128 ≤ 6.6.* ; unaffected 6.6.143 ≤ 6.6.* ; unaffected 6.12.75 ≤ 6.12.* |
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 |