Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mld: validate sta_mask before ffs() in BA session handlers Three BA session handlers use ffs(ba_data->sta_mask) - 1 to derive a station ID without checking that sta_mask is non-zero. When sta_mask is zero, ffs() returns 0 and the subtraction wraps to 0xFFFFFFFF, causing an out-of-bounds access on fw_id_to_link_sta[]. Add WARN_ON_ONCE(!ba_data->sta_mask) guards before each ffs() call, consistent with the existing check in iwl_mld_ampdu_rx_start().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b before 1de92789ce31e46fa7e7d8e89c90b19cdb1c103b; affected 9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b before fe7f339f63c9dc4ca546ed7ac38ba4bb3a99dcfc; affected 9aa3856d9b6f3f8bf085b5bbb5f3703578bf452b before f056fc2b927448d37eca6b6cacc3d1b0f67b20d2 |
| Linux / Linux | affected 6.4; unaffected 0 before 6.4; unaffected 6.18.38 through 6.18.*; unaffected 7.1.3 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/1de92789ce31e46fa7e7d8e89c90b19cdb1c103b
- https://git.kernel.org/stable/c/fe7f339f63c9dc4ca546ed7ac38ba4bb3a99dcfc
- https://git.kernel.org/stable/c/f056fc2b927448d37eca6b6cacc3d1b0f67b20d2
ADP enrichment
No English description supplied.
No references supplied.