Medium [CVE-2026-68406] validate PMSR FTM preamble range
This medium-severity Red Hat Linux advisory covers CVE-2026-68406 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, 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 34 official vendor sources and 160+ reviewed platform categories.
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate PMSR FTM preamble range PMSR FTM request parsing accepts preamble values outside the enumerated nl80211 preamble range.
Reject out-of-range values before using them in the parser capability bit test using the policy. [drop unnecessary check] A flaw was found in the `cfg80211` component of the Linux kernel's Wi-Fi subsystem. An attacker could exploit this by providing malformed input, potentially leading to unexpected system behavior or resource exhaustion.
This issue affects the cfg80211 Wi-Fi configuration layer. PMSR FTM request parsing accepted preamble values outside the nl80211 enumerated range, which could lead to out-of-bounds access in capability bit tests.
Exploitation requires a local user able to issue nl80211 PMSR requests. Red Hat severity: Low — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-839. Affected Red Hat products: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8.
Red Hat fixing advisory: RHSA-2026:67150.
Affected products named by the advisory: Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
- kernel-0:5.14.0-687.47.1.el9_8
- RHSA-2026:67150
Official advisory · high-confidence parse· fetched 2 days ago·verify at source
Mitigation
Upgrade to a fixed release: kernel-0:5.14.0-687.47.1.el9_8, RHSA-2026:67150. 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 2 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.