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CVE record · CVE-2026-43493

crypto: pcrypt - Fix handling of MAY_BACKLOG requests

CVSS 9.8 CriticalCriticalEPSS 0.0068 · 52nd 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 19 May 2026, 10:44 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 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before ae7e95638d956d556d74b9abb9e780d3bd3dcd9e git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before 1d7f07df450bac3301938fbc4251f2611be4084e git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before 76641449b28979ebd6c02e9598367e119e385236 git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before 9f1cbca178c03188e201ed175251372149bb25f2 git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before eb34e243df57e32f4c08fa191f3602ea19076276 git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before 77d55bc8675ee851ed639dc9be77325a8024cf67 git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before 46271895ddfb1ba41f89f7e0dffbe9c2bcf7380a git
  • affected 5a1436beec5744029f3ac90b6fe71a698dcd6155 to before 915b692e6cb723aac658c25eb82c58fd81235110 git
Other versions: unaffected
Linux Linux
  • affected 2.6.34
  • unaffected before 2.6.34 semver
  • unaffected 5.10.258 to 5.10.*, inclusive semver
  • unaffected 5.15.209 to 5.15.*, inclusive semver
  • unaffected 6.1.175 to 6.1.*, inclusive semver
  • unaffected 6.6.140 to 6.6.*, inclusive semver
  • unaffected 6.12.86 to 6.12.*, inclusive semver
  • unaffected 6.18.27 to 6.18.*, inclusive semver
  • unaffected 7.0.4 to 7.0.*, inclusive semver
  • unaffected 7.1 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-43493
CNA
Linux
Weakness (CWE)
CWE-390
Tags
Published
19 May 2026
Updated
19 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 0.0068, the 52nd percentile, on 5 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 19 May 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.