efi/capsule-loader: fix incorrect sizeof in phys array reallocation (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.18 % · centile 7 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: efi/capsule-loader: fix incorrect sizeof in phys array reallocation The krealloc() call for cap_info->phys in __efi_capsule_setup_info() uses sizeof(phys_addr_t *) instead of sizeof(phys_addr_t), which might be causing an undersized allocation. The allocation is also inconsistent with the initial array allocation in efi_capsule_open() that allocates one entry with sizeof(phys_addr_t), and the efi_capsule_write() function that stores phys_addr_t values (not pointers) via page_to_phys(). On 64-bit systems where sizeof(phys_addr_t) == sizeof(phys_addr_t *), this goes unnoticed. On 32-bit systems with PAE where phys_addr_t is 64-bit but pointers are 32-bit, this allocates half the required space, which might lead to a heap buffer overflow when storing physical addresses. This is similar to the bug fixed in commit fccfa646ef36 ("efi/capsule-loader: fix incorrect allocation size") which fixed the same issue at the initial allocation site.
Références
- https://git.kernel.org/stable/c/22022cd8851703a58f67615a17bc7e9e8682785b
- https://git.kernel.org/stable/c/67adde6bfdfd563a54b045d59aeb9a2d90c80697
- https://git.kernel.org/stable/c/608e1f7bc9d171ab26c1fba288c97fc76363c27d
- https://git.kernel.org/stable/c/8be69e9245f805566bac68ffc8574b64735fd996
- https://git.kernel.org/stable/c/5e185330d902b12fe8e6eb4b8514b5d736d8d66d
- https://git.kernel.org/stable/c/e0e6b14995fd6fa2c0df8c712d76ab32f0694c31
- https://git.kernel.org/stable/c/ab3f7098a3a27175b91cfc947950f5c26855801b
- https://git.kernel.org/stable/c/48a428215782321b56956974f23593e40ce84b7a
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-2026-38915
- GCVE · GCVE-0-2026-53047
Avis du CERT-FR
- CERTFR-2026-AVI-1252 — 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-1162 — 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-1064 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0985 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · 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-0866 — Multiples vulnérabilités dans Microsoft Azure Linux · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0862 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.14.13 < 4.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15.1 < 5.10.258cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.209cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.175cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.6.141cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.91cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.33cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 7.0.10cpe:2.3:o:linux:linux_kernel:4.15:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.15:rc7:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.15:rc8:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.15:rc9:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected f24c4d478013d82bd1b943df566fff3561d52864 < 22022cd8851703a58f67615a17bc7e9e8682785b ; affected f24c4d478013d82bd1b943df566fff3561d52864 < 67adde6bfdfd563a54b045d59aeb9a2d90c80697 ; affected f24c4d478013d82bd1b943df566fff3561d52864 < 608e1f7bc9d171ab26c1fba288c97fc76363c27d ; affected f24c4d478013d82bd1b943df566fff3561d52864 < 8be69e9245f805566bac68ffc8574b64735fd996 ; affected f24c4d478013d82bd1b943df566fff3561d52864 < 5e185330d902b12fe8e6eb4b8514b5d736d8d66d ; affected f24c4d478013d82bd1b943df566fff3561d52864 < e0e6b14995fd6fa2c0df8c712d76ab32f0694c31 |
| Linux · Linux | affected 4.15 ; unaffected 0 < 4.15 ; unaffected 5.10.258 ≤ 5.10.* ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.175 ≤ 6.1.* ; unaffected 6.6.141 ≤ 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 |