CVE-2026-64118
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
19/07/2026
Last modified:
20/07/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
qed: fix double free in qed_cxt_tables_alloc()<br />
<br />
If one of the later PF or VF CID bitmap allocations fails,<br />
qed_cid_map_alloc() jumps to cid_map_fail and frees the previously<br />
allocated CID bitmaps before returning an error. qed_cxt_tables_alloc()<br />
then calls qed_cxt_mngr_free(), which invokes qed_cid_map_free()<br />
again.<br />
<br />
Fix this by setting each CID bitmap pointer to NULL after bitmap_free()<br />
to avoid double free.<br />
<br />
The bug was first flagged by an experimental analysis tool we are<br />
developing for kernel memory-management bugs while analyzing<br />
v6.13-rc1. The tool is still under development and is not yet publicly<br />
available. Manual inspection confirms that the bug is still<br />
present in v7.1-rc3.<br />
<br />
Runtime reproduction was not attempted because exercising the failing<br />
allocation path requires device-specific setup.
Impact
Base Score 3.x
8.40
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227
- https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c
- https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de
- https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684
- https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb
- https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c
- https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a
- https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c



