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Review reviewHigh

CVE-2026-64118

Linux

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 a...

CVSS
8.4
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.20
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 8.4

Vulnerability overview

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 a...

Affected product and versions

Product
Linux
Affected versions
>= fe56b9e6a8d957d6a20729d626027f800c17a2da < 9fe030719bd083b766602692ee96c8c985798e3c, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < 06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < 8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < 3904b993cc17ec5d7c5d3b57dbd0b775dafb9684, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < bdf678a273cadbccc347f331ae2e93ff4d14834c, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < 0e47fc1c9181ae029e0e35a865cbf2adcbae626c, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < a04c207f0801abdd23a169b5f902a9845059a65a, >= fe56b9e6a8d957d6a20729d626027f800c17a2da < 2bccfb8476ca5f3548afbd623dc7a6980d4e77de, >= 4.4
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available