CVE record · CVE-2026-43178

procfs: fix possible double mmput() in do_procmap_query()

CVSS 7.8 HighEPSS 0.0013 · 2nd percentile

Published by the CVE Program (CNA: Linux) at 6 May 2026, 11:27 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
Vendor	Product	Versions
Linux	Linux	affected b9b97e6aeb534315f9646b2090d1a5024c6a4e82 to before f9fe092084cd04deea18747f58a2304026e76aaa git affected cbc03ce3e6ce7e21214c3f02218213574c1a2d08 to before 8adaff87db143583e08eec4f4e7788f1ef8af94d git affected b5cbacd7f86f4f62b8813688c8e73be94e8e1951 to before 90f5e87c9b75833b9ef3a4415b92c0247f28ab2f git affected b5cbacd7f86f4f62b8813688c8e73be94e8e1951 to before 61dc9f776705d6db6847c101b98fa4f0e9eb6fa3 git affected 6.12.70 to before 6.12.75 semver affected 6.18.10 to before 6.18.16 semver Other versions: unaffected
Linux	Linux	affected 6.19 unaffected before 6.19 semver unaffected 6.12.75 to 6.12., inclusive semver unaffected 6.18.16 to 6.18., inclusive semver unaffected 6.19.6 to 6.19., inclusive semver unaffected 7.0 to , inclusive original_commit_for_fix Other versions: affected

Identifiers: CVE-2026-43178
CNA: Linux
Weakness (CWE): CWE-1341
Tags: Linux kernel
CWE-1341
Published: 6 May 2026
Updated: 5 Aug 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

Score	Rating	CVSS	Vector	Source
7.8	High	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CNA (Linux)Used for this record
7.0	High	3.1	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	ADP (redhat-SADP)

CISA KEV Not listed.
EPSS 0.0013, the 2nd percentile, on 6 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 6 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.