kmod update
Summary
USN-8226-1 added a mitigation to kmod to disable loading the algif_aead module. This update adds the same mitigation to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: It was discovered that the Linux kernel algif_aead module contained a logic flaw allowing a local attacker to escalate privileges to root. This update to the kmod package disables loading the algif_aead module as a measure to mitigate the issue until kernel updates are made available. See the following URL for more information https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available Affected Ubuntu releases: 20.04, 18.04, 16.04, 14.04. CVEs: CVE-2026-31431.
CISA Known Exploited Vulnerability
- Listed:
- May 1, 2026 · federal remediation due May 15, 2026
- Required action:
- "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Ransomware use:
- Unknown
KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.
- Ubuntu 20.04
- Ubuntu 18.04
- Ubuntu 16.04
- Ubuntu 14.04
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Mitigation checklist
- Apply available updates: `sudo apt update && sudo apt upgrade` (a standard system update installs the fix).
Official advisory · medium-confidence parse· fetched 3 hours ago·verify at source
Discussion(0)
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