Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fe56b9e6a8d957d6a20729d626027f800c17a2da before 9fe030719bd083b766602692ee96c8c985798e3c; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before 06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before 8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before 3904b993cc17ec5d7c5d3b57dbd0b775dafb9684; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before bdf678a273cadbccc347f331ae2e93ff4d14834c; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before 0e47fc1c9181ae029e0e35a865cbf2adcbae626c; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before a04c207f0801abdd23a169b5f902a9845059a65a; affected fe56b9e6a8d957d6a20729d626027f800c17a2da before 2bccfb8476ca5f3548afbd623dc7a6980d4e77de |
| Linux / Linux | affected 4.4; unaffected 0 before 4.4; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.142 through 6.6.*; unaffected 6.12.92 through 6.12.*; unaffected 6.18.34 through 6.18.*; unaffected 7.0.11 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9fe030719bd083b766602692ee96c8c985798e3c
- https://git.kernel.org/stable/c/06fa8e69019fd3c41a7b0ea8c5f509c3a33dc227
- https://git.kernel.org/stable/c/8cf5e4d2ca6b101d163c7423a426fb0aec34f7bb
- https://git.kernel.org/stable/c/3904b993cc17ec5d7c5d3b57dbd0b775dafb9684
- https://git.kernel.org/stable/c/bdf678a273cadbccc347f331ae2e93ff4d14834c
- https://git.kernel.org/stable/c/0e47fc1c9181ae029e0e35a865cbf2adcbae626c
- https://git.kernel.org/stable/c/a04c207f0801abdd23a169b5f902a9845059a65a
- https://git.kernel.org/stable/c/2bccfb8476ca5f3548afbd623dc7a6980d4e77de
ADP enrichment
No English description supplied.
No references supplied.