CVE-2026-74350
OCFS2 symlink validation flaw leads to kernel memory corruption.
Is CVE-2026-74350 being exploited?
Not confirmed. CVE-2026-74350 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-74350?
CVE-2026-74350 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-74350?
Yes. A fix has been recorded for CVE-2026-74350. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74350 affect?
CVE-2026-74350 affects Linux kernel (OCFS2 filesystem), Systems with OCFS2 mounts. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74350?
Apply vendor kernel patches immediately; avoid/umount OCFS2 until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local attacker can craft an OCFS2 fast-symlink to trigger kernel memory corruption, causing DoS or possible local privilege escalation.
Immediate action required
- affected>= ea022dfb3c2a4680483b00eb2fecc9fc4f6091d1 and < f9e2cb692b77a679b1f4cc2b7b277fa908586533
- affected>= ea022dfb3c2a4680483b00eb2fecc9fc4f6091d1 and < e234973f286ed2e8961a24561ec91594ec3e3ff8
- affected3.5
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.