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.
Affected products
20- osv-coords14 versionspkg:linux/kernelpkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0
>= 4.4.0, < 5.10.259+ 13 more
- (no CPE)range: >= 4.4.0, < 5.10.259
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1.160000.2.22
- (no CPE)range: < 6.12.0-160000.38.1
(expand)+ 5 more
- (no CPE)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.4,<5.10.259
- cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227nvdPatch
- git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626cnvdPatch
- git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77denvdPatch
- git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684nvdPatch
- git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bbnvdPatch
- git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3cnvdPatch
- git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65anvdPatch
- git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834cnvdPatch
News mentions
0No linked articles in our index yet.