dm era: fix out-of-bounds memory access for non-zero start sector (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.65 % · percentile 51 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: dm era: fix out-of-bounds memory access for non-zero start sector dm-era tracks writes in target-relative blocks, but era_map() calculates the writeset block before applying the target offset. Tables with a non-zero start sector can therefore pass an absolute mapped-device block to metadata_current_marked(). If the absolute block is beyond the current writeset size, writeset_marked() tests past the end of the in-core bitset. KASAN reports this as a vmalloc-out-of-bounds access. Apply the target offset before calculating the era block so writeset lookups use the target-relative block number.
Weaknesses (CWE)
- CWE-125 — Out-of-bounds Read
References
- https://git.kernel.org/stable/c/fe94a0b14010a3c267ff9a2508afb4f27ff1c5bf
- https://git.kernel.org/stable/c/e3ffa8e492e5cdee62d916ee3e9244ccce2b73c5
- https://git.kernel.org/stable/c/9946a7176bd8c25ddd6e5f1799c54e572ee6bf0f
- https://git.kernel.org/stable/c/7e1822f83c5a1ee7b4a19e98edde8770a10b4c71
- https://git.kernel.org/stable/c/db5f9b4601f0012038e5a2628aedec2f47933380
- https://git.kernel.org/stable/c/1fcb5e29dd7a5b85adb9d8b539911741d878e829
- https://git.kernel.org/stable/c/bafe3e720cdac38cd7ea4eb7852a8f2dbe1bbfe6
- https://git.kernel.org/stable/c/a868196f03c2b19418ae3d2b69e195d668a271e5
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/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-2026-59065
- GCVE · GCVE-0-2026-72107
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.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-1255 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected eec40579d84873dfb7021eb24c50360f073237c5 < fe94a0b14010a3c267ff9a2508afb4f27ff1c5bf ; affected eec40579d84873dfb7021eb24c50360f073237c5 < e3ffa8e492e5cdee62d916ee3e9244ccce2b73c5 ; affected eec40579d84873dfb7021eb24c50360f073237c5 < 9946a7176bd8c25ddd6e5f1799c54e572ee6bf0f ; affected eec40579d84873dfb7021eb24c50360f073237c5 < 7e1822f83c5a1ee7b4a19e98edde8770a10b4c71 ; affected eec40579d84873dfb7021eb24c50360f073237c5 < db5f9b4601f0012038e5a2628aedec2f47933380 ; affected eec40579d84873dfb7021eb24c50360f073237c5 < 1fcb5e29dd7a5b85adb9d8b539911741d878e829 |
| Linux · Linux | affected 3.15 ; unaffected 0 < 3.15 ; unaffected 5.10.261 ≤ 5.10.* ; unaffected 5.15.212 ≤ 5.15.* ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 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 |