CVE-2026-64118 Details
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.
A double free vulnerability has been identified in the Linux kernel's QLogic QED driver, specifically within the context management functions. This issue arises when the allocation of Connection ID (CID) bitmaps fails for either Physical Functions (PF) or Virtual Functions (VF). The function responsible for allocating CID bitmaps frees the previously allocated bitmaps before returning an error, but the context manager subsequently attempts to free them again, leading to a double free condition. The vulnerability has been confirmed to exist in Linux kernel versions 6.13-rc1 and 7.1-rc3.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been patched. The patch is available in the Linux kernel stable tree.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227 | kernel.org | Patch |
| https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c | kernel.org | Patch |
| https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de | kernel.org | Patch |
| https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb | kernel.org | Patch |
| https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c | kernel.org | Patch |
| https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a | kernel.org | Patch |
| https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-415 | Double Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.4, < 5.10.259 >= 5.11, < 5.15.210 >= 5.16, < 6.1.175 >= 6.2, < 6.6.142 >= 6.7, < 6.12.92 >= 6.13, < 6.18.34 >= 6.19, < 7.0.11 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 13, 2026 | Initial Analysis | [email protected] |
| Jul 20, 2026 | CVE Modified | kernel.org |
| Jul 19, 2026 | New CVE Received | kernel.org |