net: mana: validate rx_req_idx to prevent out-of-bounds array access

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64018
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:41 UTC
Updated2026-07-20 15:17:02 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access In mana_hwc_rx_event_handler(), rx_req_idx is derived from sge->address in DMA-coherent memory. In Confidential VMs (SEV-SNP/TDX), this memory is shared unencrypted and HW can modify WQE contents at any time. No bounds check exists on rx_req_idx, which can lead to an out-of-bounds access into reqs[]. Add bounds check on rx_req_idx in mana_hwc_rx_event_handler() before using it to index the reqs[] array.

Risk And Classification

Primary CVSS: v3.1 9.3 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001720000 probability, percentile 0.069030000 (date 2026-07-20)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.3CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1CNADECLARED9.3CRITICALCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f 5ddc715324badd7f2641bc177db1d027b402adae git Not specified
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ff1d5af207bcea857d45fe81505f1bc4b29eaef0 git Not specified
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f 01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01 git Not specified
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f 763a372d344fb12fae566d36ddb46e92454ad58c git Not specified
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f fa627a5eaa83fc0261f44ef3769693b886ca6e27 git Not specified
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f 355e9f2b2a7887ca38100127989af3e422ba71d0 git Not specified
CNA Linux Linux affected ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f b809d0409991b75a6cff846a5ac27c3062953f84 git Not specified
CNA Linux Linux affected 5.13 Not specified
CNA Linux Linux unaffected 5.13 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 6.6.142 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.92 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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