RDMA/irdma: Harden depth calculation functions

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Summary

CVECVE-2026-31491
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-22 14:16:46 UTC
Updated2026-04-28 12:51:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Harden depth calculation functions An issue was exposed where OS can pass in U32_MAX for SQ/RQ/SRQ size. This can cause integer overflow and truncation of SQ/RQ/SRQ depth returning a success when it should have failed. Harden the functions to do all depth calculations and boundary checking in u64 sizes.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.000170000 probability, percentile 0.040700000 (date 2026-04-26)

Problem Types: CWE-190

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 563e1feb5f6ed579acb55850f1bbb831aecf645a 3f08351de5ca4f2f724b86ad252fbc21289467e1 git Not specified
CNA Linux Linux affected 563e1feb5f6ed579acb55850f1bbb831aecf645a cbd852f5700eb3f64392452faf693ac45cae8281 git Not specified
CNA Linux Linux affected 563e1feb5f6ed579acb55850f1bbb831aecf645a e37afcb56ae070477741fe2d6e61fc0c542cce2d git Not specified
CNA Linux Linux affected 6.18 Not specified
CNA Linux Linux unaffected 6.18 semver Not specified
CNA Linux Linux unaffected 6.18.21 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.11 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cbd852f5700eb3f64392452faf693ac45cae8281 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e37afcb56ae070477741fe2d6e61fc0c542cce2d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3f08351de5ca4f2f724b86ad252fbc21289467e1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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