CVE-2026-64118
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.
Affected versions
Linux kernel versions
4.4
and later are affected. Fixed in
5.10.259,
5.15.210,
6.1.175,
6.6.142,
6.12.92,
6.18.34,
7.0.11,
7.1
and their respective stable series.
References
8 totalFrequently asked questions
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What is CVE-2026-64118?
CVE-2026-64118 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.4 onward and has been patched in 5.10.259, 5.15.210, 6.1.175 and others. CVE-2026-64118 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-64118?
Yes — CVE-2026-64118 has been patched. Fixed versions include 5.10.259, 5.15.210, 6.1.175 and others. If you are running Linux kernel 4.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64118 actively exploited?
No — CVE-2026-64118 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.