CVE-2026-89762
A NVD · · CVE-2026-89762
Admiralty grading (A–F · 1–6)
Source reliability
- A Completely reliable
- B Usually reliable
- C Fairly reliable
- D Not usually reliable
- E Unreliable
- F Cannot be judged
Information credibility
- 1 Confirmed
- 2 Probably true
- 3 Possibly true
- 4 Doubtful
- 5 Improbable
- 6 Cannot be judged
NATO Admiralty (AJP-2.1) grades confidence, independent of the risk score. Cross-source corroboration isn't tracked for non-CVE news, so single-source items are capped at a lower credibility number; a low number does not imply low quality.
Key metrics
- EPSS
- 0%
Key insight
The report contains no information beyond the patch details regarding active exploitation, attackers, or affected sectors.
Description
CVE-2026-89762 affects a use-after-free vulnerability in the Linux kernel's AppArmor subsystem. The function begin_current_label_crit_section() can cause the cred structure to become invalid during a concurrent update of AppArmor profiles. Triggering is possible locally, for example when a process is blocked during a profile change and then resumes. The vulnerability has been fixed in the kernel; no public exploit or active attacks are known. Affected are Linux systems that use AppArmor, particularly distributions such as Ubuntu.
Risk score
- cvss base
- 0.00
- kev bonus
- 0.00
- epss bonus
- 0.00
- poc bonus
- 0.00
- raw before weight
- 0.00
- industry weight
- 1.10
- freshness factor
- 1.00
- exploitability factor
- 1.00
- days old
- 0.00
- vendor mismatch penalty
- 0.00
Path: operational