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CVE-2026-64118

Description
In 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.

Metadata

CVE ID
CVE-2026-64118
State
PUBLISHED
Assigner
Linux
Reserved
2026-07-19 07:54 UTC
Published
2026-07-19 15:40 UTC
Last updated
2026-07-19 15:40 UTC
Vendor / Product
Linux / Linux
Sources
cve.org  ·  NVD

Severity & Metrics

No CVSS data available.

Affected products (2)
VendorProductPlatformVersions
Linux Linux fe56b9e6a8d957d6a20729d626027f800c17a2da < 9fe030719bd083b766602692ee96c8c985798e3c, fe56b9e6a8d957d6a20729d626027f800c17a2da < 06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227, fe56b9e6a8d957d6a20729d626027f800c17a2da < 8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb, fe56b9e6a8d957d6a20729d626027f800c17a2da < 3904b993cc17ec5d7c5d3b57dbd0b775dafb9684 …
Linux Linux 4.4, 0 < 4.4, 5.10.259 ≤ 5.10.*, 5.15.210 ≤ 5.15.* …
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