High [CVE-2026-86805] Privilege escalation and arbitrary code execution via TOCTOU race condition in dynamic loader
This high-severity Red Hat Linux advisory covers CVE-2026-86805; related products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
Privilege escalation and arbitrary code execution via TOCTOU race condition in dynamic loader. Red Hat rates this moderate (CVSS 7).
Weakness: CWE-367. Red Hat lists fixing advisory RHSA-2026:72503 with package glibc-main-2.43-8.7.hum1.
Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 3 more.
Affected products named by the advisory: Red Hat Hardened Images; Red Hat OpenShift Container Platform 4; Red Hat package: glibc.
- 2.14
- 2.44
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
- glibc-main-2.43-8.7.hum1
- RHSA-2026:72503
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Mitigation
Upgrade to a fixed release: glibc-main-2.43-8.7.hum1, RHSA-2026:72503. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.