net: ncsi: fix skb leak in error paths

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Summary

CVECVE-2026-43373
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:48 UTC
Updated2026-05-11 08:16:11 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: ncsi: fix skb leak in error paths Early return paths in NCSI RX and AEN handlers fail to release the received skb, resulting in a memory leak. Specifically, ncsi_aen_handler() returns on invalid AEN packets without consuming the skb. Similarly, ncsi_rcv_rsp() exits early when failing to resolve the NCSI device, response handler, or request, leaving the skb unfreed.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.000240000 probability, percentile 0.070400000 (date 2026-05-10)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af 9891d7f4f1ede473c54b49776ae07755083eef06 git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af fef5aa6e3bcf3c8053307642663a63b7362d7552 git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af 81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af 59962588197863d0d746879f193905c0c6b3df49 git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af 553366c271479c0d571dd1bb5d1bcde4747fb82e git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af b70c4e5e711931cdd56e6e905737b72f1e649189 git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af 87138dde2d6937b12b967f28fe598a7d59000ae4 git Not specified
CNA Linux Linux affected 138635cc27c9737f940c3aa80912ff7a61c825af 5c3398a54266541610c8d0a7082e654e9ff3e259 git Not specified
CNA Linux Linux affected 4.8 Not specified
CNA Linux Linux unaffected 4.8 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* 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 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/59962588197863d0d746879f193905c0c6b3df49 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9891d7f4f1ede473c54b49776ae07755083eef06 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b70c4e5e711931cdd56e6e905737b72f1e649189 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/87138dde2d6937b12b967f28fe598a7d59000ae4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/553366c271479c0d571dd1bb5d1bcde4747fb82e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fef5aa6e3bcf3c8053307642663a63b7362d7552 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5c3398a54266541610c8d0a7082e654e9ff3e259 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/81d6aee32f8f7bbc175c05dbf61f4430bfb88c4a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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