net: nfc: nci: Fix parameter validation for packet data

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Summary

CVECVE-2026-43291
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 14:16:36 UTC
Updated2026-05-11 08:16:08 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: nfc: nci: Fix parameter validation for packet data Since commit 9c328f54741b ("net: nfc: nci: Add parameter validation for packet data") communication with nci nfc chips is not working any more. The mentioned commit tries to fix access of uninitialized data, but failed to understand that in some cases the data packet is of variable length and can therefore not be compared to the maximum packet length given by the sizeof(struct).

Risk And Classification

Primary CVSS: v3.1 8.3 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

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

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.3HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
3.1CNADECLARED8.3HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 8fcc7315a10a84264e55bb65ede10f0af20a983f a24a8a582da4426b2042e510a1080df84083b51d git Not specified
CNA Linux Linux affected bfdda0123dde406dbff62e7e9136037e97998a15 f5218426f765eee22e178df9c126d974792fb6a5 git Not specified
CNA Linux Linux affected 0ba68bea1e356f466ad29449938bea12f5f3711f ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 git Not specified
CNA Linux Linux affected 74837bca0748763a77f77db47a0bdbe63b347628 3b91160e9a91b5a2662875417dc42dc5b0bf03ea git Not specified
CNA Linux Linux affected 9c328f54741bd5465ca1dc717c84c04242fac2e1 c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b git Not specified
CNA Linux Linux affected 9c328f54741bd5465ca1dc717c84c04242fac2e1 498fc5d0d650c77e87fcc73808d4f43240c21805 git Not specified
CNA Linux Linux affected 9c328f54741bd5465ca1dc717c84c04242fac2e1 571dcbeb8e635182bb825ae758399831805693c2 git Not specified
CNA Linux Linux affected c395d1e548cc68e84584ffa2e3ca9796a78bf7b9 git Not specified
CNA Linux Linux affected 6.18 Not specified
CNA Linux Linux unaffected 6.18 semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ad058a4317db7fdb3f09caa6ed536d24a62ce6a0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3b91160e9a91b5a2662875417dc42dc5b0bf03ea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f5218426f765eee22e178df9c126d974792fb6a5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a24a8a582da4426b2042e510a1080df84083b51d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c692db813a7e3b7c3c17d6e9a3ad2a018bf1142b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/571dcbeb8e635182bb825ae758399831805693c2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/498fc5d0d650c77e87fcc73808d4f43240c21805 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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