qed: fix double free in qed_cxt_tables_alloc()

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Summary

CVECVE-2026-64118
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:53 UTC
Updated2026-07-19 16:17:53 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: qed: fix double free in qed_cxt_tables_alloc() If one of the later PF or VF CID bitmap allocations fails, qed_cid_map_alloc() jumps to cid_map_fail and frees the previously allocated CID bitmaps before returning an error. qed_cxt_tables_alloc() then calls qed_cxt_mngr_free(), which invokes qed_cid_map_free() again. Fix this by setting each CID bitmap pointer to NULL after bitmap_free() to avoid double free. 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 reproduction was not attempted because exercising the failing allocation path requires device-specific setup.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da 9fe030719bd083b766602692ee96c8c985798e3c git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da 06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227 git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da 8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da 3904b993cc17ec5d7c5d3b57dbd0b775dafb9684 git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da bdf678a273cadbccc347f331ae2e93ff4d14834c git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da 0e47fc1c9181ae029e0e35a865cbf2adcbae626c git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da a04c207f0801abdd23a169b5f902a9845059a65a git Not specified
CNA Linux Linux affected fe56b9e6a8d957d6a20729d626027f800c17a2da 2bccfb8476ca5f3548afbd623dc7a6980d4e77de git Not specified
CNA Linux Linux affected 4.4 Not specified
CNA Linux Linux unaffected 4.4 semver Not specified
CNA Linux Linux unaffected 5.10.259 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.210 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/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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