RDMA/core: Prefer NLA_NUL_STRING

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Summary

CVECVE-2026-63860
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 15:16:52 UTC
Updated2026-07-20 15:16:52 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check for the presence of a \0 terminator. Either this needs to switch to nla_strcmp() and needs to adjust printf fmt specifier to not use plain %s, or this needs to use NLA_NUL_STRING. As the code has been this way for long time, it seems to me that userspace does include the terminating nul, even tough its not enforced so far, and thus NLA_NUL_STRING use is the simpler solution.

Risk And Classification

Primary CVSS: v3.1 8.4 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001650000 probability, percentile 0.060630000 (date 2026-07-20)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 87111356d58d86edb221ba144d261ed83a5b8bbe git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 abda65bdd13084c771842adaac1f652d0660dd82 git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 137b5918931d4d05aa8ea8d3adf67f7224eef63c git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 5877c043398d5fa0e93919a3d837e5cd7a98a961 git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 f2c7b39dde2e61df8157066969cc2a408cd3dcd9 git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 c26a0052cceed4c4d380ee5808b699f937fb58d8 git Not specified
CNA Linux Linux affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 6ed3d14fc45d3da6025e7fe4a6a09066856698e2 git Not specified
CNA Linux Linux affected 3.16 Not specified
CNA Linux Linux unaffected 3.16 semver Not specified
CNA Linux Linux unaffected 5.10.258 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.209 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.141 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.91 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f2c7b39dde2e61df8157066969cc2a408cd3dcd9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5877c043398d5fa0e93919a3d837e5cd7a98a961 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/137b5918931d4d05aa8ea8d3adf67f7224eef63c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6ed3d14fc45d3da6025e7fe4a6a09066856698e2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/abda65bdd13084c771842adaac1f652d0660dd82 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c26a0052cceed4c4d380ee5808b699f937fb58d8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/87111356d58d86edb221ba144d261ed83a5b8bbe 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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