8.4

CVE-2026-64118

qed: fix double free in qed_cxt_tables_alloc()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.4 < 5.10.259
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.210
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.175
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.142
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.92
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.34
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.11
Linux ≫ Linux Kernel Version7.1 Updaterc1
Linux ≫ Linux Kernel Version7.1 Updaterc2
Linux ≫ Linux Kernel Version7.1 Updaterc3
Linux ≫ Linux Kernel Version7.1 Updaterc4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.048
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.4 2.5 5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-415 Double Free

The product calls free() twice on the same memory address.

https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c
Patch
https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227
Patch
https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb
Patch
https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684
Patch
https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c
Patch
https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c
Patch
https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a
Patch
https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de
Patch