KVM: s390: Fix old_data leak in guest debug error path (Linux Linux)
En bref
- Source
- NVD
- EPSS
- EPSS 0.22 % · centile 12 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- Linux
- Statut NVD
- Received
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Description
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix old_data leak in guest debug error path __import_wp_info() allocates a per-watchpoint old_data buffer to back up the original guest memory contents. If a later watchpoint of the same KVM_SET_GUEST_DEBUG request fails to import, kvm_s390_import_bp_data() jumps to the error label, which frees the wp_info array but not the old_data buffers of the entries that were imported successfully. Up to MAX_BP_COUNT - 1 buffers of up to MAX_WP_SIZE bytes are leaked per failed request, and the request can be repeated. Create error handling for cleaning up all created old_data memory areas.
Références
- https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941
- https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4
- https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b
- https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457
- https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913
- https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f
- https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86
- https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f
Références européennes
- ENISA EUVD · EUVD-2026-80524
- GCVE · GCVE-0-2026-89924
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Produits affectés
| Produit | Versions |
|---|---|
| Linux · Linux | affected 27291e2165b6de70c476b7b675308113edd69a60 < 124c81ee610e1fbdd93d4399f88d9e28ba97a941 ; affected 27291e2165b6de70c476b7b675308113edd69a60 < e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4 ; affected 27291e2165b6de70c476b7b675308113edd69a60 < c85d402553987777cc4742751437ea5dcbf98a7b ; affected 27291e2165b6de70c476b7b675308113edd69a60 < 5fbf319137735252eefa507193c9a619af5b7457 ; affected 27291e2165b6de70c476b7b675308113edd69a60 < 4048d0a252163084794be3e37995b872c5178913 ; affected 27291e2165b6de70c476b7b675308113edd69a60 < f55e4d415d95342d5753e528e05a1e8623992c3f |
| Linux · Linux | affected 3.16 ; unaffected 0 < 3.16 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 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 |