octeontx2-pf: fix double free in rvu_rep_rsrc_init()

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Summary

CVECVE-2026-64224
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-24 16:16:51 UTC
Updated2026-07-24 16:16:51 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix double free in rvu_rep_rsrc_init() rvu_rep_rsrc_init() allocates queue memory before calling otx2_init_hw_resources(). When hardware resource setup fails, otx2_init_hw_resources() already unwinds the partially initialized SQ, CQ, and aura state before returning an error. The representor error path then calls otx2_free_hw_resources() again and can free the same resources a second time. Fix this by splitting the cleanup labels so that a failure from otx2_init_hw_resources() only releases queue memory. Keep the otx2_free_hw_resources() call for failures that happen after hardware resource initialization completed successfully. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3. Runtime validation was not performed because reproducing this path requires OcteonTX2 representor hardware.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3937b7308d4fce2793fa7fa56ed0faf0f8b6dc7a 8864b664d0443ecb8e56690e5546fcda5fe5e81b git Not specified
CNA Linux Linux affected 3937b7308d4fce2793fa7fa56ed0faf0f8b6dc7a eb72a65f2bb2cc059e2ca5d83de01fdf3ea602ad git Not specified
CNA Linux Linux affected 3937b7308d4fce2793fa7fa56ed0faf0f8b6dc7a e8fb3de2a8effcaf62bec2c56b93d8bb480371d1 git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 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/e8fb3de2a8effcaf62bec2c56b93d8bb480371d1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8864b664d0443ecb8e56690e5546fcda5fe5e81b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/eb72a65f2bb2cc059e2ca5d83de01fdf3ea602ad 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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