x86/MCE/AMD: Use an u64 for bank_map (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Use an u64 for bank_map Thee maximum number of MCA banks is 64 (MAX_NR_BANKS), see a0bc32b3cacf ("x86/mce: Increase maximum number of banks to 64"). However, the bank_map which contains a bitfield of which banks to initialize is of type unsigned int and that overflows when those bit numbers are >= 32, leading to UBSAN complaining correctly: UBSAN: shift-out-of-bounds in arch/x86/kernel/cpu/mce/amd.c:1365:38 shift exponent 32 is too large for 32-bit type 'int' Change the bank_map to a u64 and use the proper BIT_ULL() macro when modifying bits in there. [ bp: Rewrite commit message. ]
Weaknesses (CWE)
- CWE-190 — Integer Overflow or Wraparound
References
- https://git.kernel.org/stable/c/a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83
- https://git.kernel.org/stable/c/11c58a0c1937c157dbdf82d5ab634d68c99f3098
- https://git.kernel.org/stable/c/ba8ffb1251eb629c2ec35220e3896cf4f7b888a7
- https://git.kernel.org/stable/c/9669fa17287c3af2bbd4868d4c8fdd9e57f8332e
- https://git.kernel.org/stable/c/67bb7521b6420d81dab7538c0686f18f7d6d09f4
- https://git.kernel.org/stable/c/4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156
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) |
| 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-2025-32810
- GCVE · GCVE-0-2023-53474
CERT-FR advisories
- CERTFR-2025-AVI-0921 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0895 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.10 < 5.10.180cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.111cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.1.28cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.2.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.3 < 6.3.2
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected a0bc32b3cacf194dc479b342f006203fd1e1941a < a9b9ea0e63a0ec5e97bf1219ab6dcbd55e362f83 ; affected a0bc32b3cacf194dc479b342f006203fd1e1941a < 11c58a0c1937c157dbdf82d5ab634d68c99f3098 ; affected a0bc32b3cacf194dc479b342f006203fd1e1941a < ba8ffb1251eb629c2ec35220e3896cf4f7b888a7 ; affected a0bc32b3cacf194dc479b342f006203fd1e1941a < 9669fa17287c3af2bbd4868d4c8fdd9e57f8332e ; affected a0bc32b3cacf194dc479b342f006203fd1e1941a < 67bb7521b6420d81dab7538c0686f18f7d6d09f4 ; affected a0bc32b3cacf194dc479b342f006203fd1e1941a < 4c1cdec319b9aadb65737c3eb1f5cb74bd6aa156 |
| Linux · Linux | affected 5.10 ; unaffected 0 < 5.10 ; unaffected 5.10.180 ≤ 5.10.* ; unaffected 5.15.111 ≤ 5.15.* ; unaffected 6.1.28 ≤ 6.1.* ; unaffected 6.2.15 ≤ 6.2.* |
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 |