netfilter: xt_CT: drop pending enqueued packets on template removal

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2026-23391
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-25 11:16:39 UTC
Updated2026-04-02 15:16:32 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfilter: xt_CT: drop pending enqueued packets on template removal Templates refer to objects that can go away while packets are sitting in nfqueue refer to: - helper, this can be an issue on module removal. - timeout policy, nfnetlink_cttimeout might remove it. The use of templates with zone and event cache filter are safe, since this just copies values. Flush these enqueued packets in case the template rule gets removed.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000320000 probability, percentile 0.091780000 (date 2026-04-02)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 24de58f465165298aaa8f286b2592f0163706cfe d2d0bae0c9a2a17b6990a2966f5cdce0813d6256 git Not specified
CNA Linux Linux affected 24de58f465165298aaa8f286b2592f0163706cfe 63b8097cea1923fe82cd598068d0796da8c015ec git Not specified
CNA Linux Linux affected 24de58f465165298aaa8f286b2592f0163706cfe 19a230dec6bb8928e3f96387f9085cf2c79bcef9 git Not specified
CNA Linux Linux affected 24de58f465165298aaa8f286b2592f0163706cfe cb549925875fa06dd155e49db4ac2c5044c30f9c git Not specified
CNA Linux Linux affected 24de58f465165298aaa8f286b2592f0163706cfe 777d02efe3d630cca4c1b63962cec17c57711325 git Not specified
CNA Linux Linux affected 24de58f465165298aaa8f286b2592f0163706cfe f62a218a946b19bb59abdd5361da85fa4606b96b git Not specified
CNA Linux Linux affected 3.4 Not specified
CNA Linux Linux unaffected 3.4 semver Not specified
CNA Linux Linux unaffected 6.1.167 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.130 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.78 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.20 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.10 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d2d0bae0c9a2a17b6990a2966f5cdce0813d6256 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/19a230dec6bb8928e3f96387f9085cf2c79bcef9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f62a218a946b19bb59abdd5361da85fa4606b96b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cb549925875fa06dd155e49db4ac2c5044c30f9c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/63b8097cea1923fe82cd598068d0796da8c015ec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/777d02efe3d630cca4c1b63962cec17c57711325 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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