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CVE record · CVE-2026-74723

btrfs: lzo: reject inline extents without valid headers

CVSS 9.8 CriticalCriticalEPSS 0.0049 · 42nd percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: Linux) at 22 Aug 2026, 15:33 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Linux Linux
  • affected a6fa6fae40ec336c7df6155255ae64ebef43a8bc to before 0b824d657d2403e8dbe4257d62825e66f79dcf8c git
  • affected a6fa6fae40ec336c7df6155255ae64ebef43a8bc to before 5d00c9c1c951ae82d498eabbdfff973252a05c50 git
  • affected a6fa6fae40ec336c7df6155255ae64ebef43a8bc to before fd150d7c8e0ad9d721c011cfd4cc0f3c65bd6834 git
  • affected a6fa6fae40ec336c7df6155255ae64ebef43a8bc to before 056876c9db1e969bfcf7d8583c7696cc0dd080df git
  • affected a6fa6fae40ec336c7df6155255ae64ebef43a8bc to before fc50b475ad27f50b4dcc98fc4c44e8802bc1b248 git
  • affected a6fa6fae40ec336c7df6155255ae64ebef43a8bc to before 0fa78ef637deb5dbe341582f88553a4bce496de0 git
Other versions: unaffected
Linux Linux
  • affected 2.6.38
  • unaffected before 2.6.38 semver
  • unaffected 6.1.191 to 6.1.*, inclusive semver
  • unaffected 6.6.160 to 6.6.*, inclusive semver
  • unaffected 6.12.114 to 6.12.*, inclusive semver
  • unaffected 6.18.57 to 6.18.*, inclusive semver
  • unaffected 7.1.9 to 7.1.*, inclusive semver
  • unaffected 7.2 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-74723
CNA
Linux
Tags
Published
22 Aug 2026
Updated
30 Oct 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0049, the 42nd percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 22 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.