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CVE-2026-15809Github.com/cri-o/cri-o: fix bypass for cve-2022-4318 — /etc/passwd injection via home env
Descripción
A flaw was found in CRI-O. The fix for a previous vulnerability (CVE-2022-4318) was incorrect, allowing it to be bypassed. An attacker capable of setting environment variables on a container can inject a newline character into the HOME environment variable. This issue allows the addition of arbitrary lines into /etc/passwd by use of a specially crafted environment variable.
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
Productos y versiones afectados
Referencias y parches
- RHSA-2026:57361 vendor-advisory
- RHSA-2026:60444 vendor-advisory
- RHSA-2026:60449 vendor-advisory
- RHSA-2026:60452 vendor-advisory
- RHSA-2026:62548 vendor-advisory
- RHSA-2026:65838 vendor-advisory
- RHSA-2026:65906 vendor-advisory
- RHSA-2026:66385 vendor-advisory
- RHSA-2026:67836 vendor-advisory
- RHSA-2026:67856 vendor-advisory
- RHSA-2026:70585 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-15809 vdb-entry
- RHBZ#2500846 issue-tracking
- https://github.com/cri-o/cri-o/pull/6450
- https://github.com/cri-o/cri-o/pull/6524