Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix memory leak in helper_firmware_cb() helper_firmware_cb() neglects to free the single-stage firmware image after a successful async load, leading to a memory leak in the USB firmware-download path. Fix this memory leak by calling release_firmware() immediately after lbs_fw_loaded() returns. 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 the current wireless tree. An x86_64 allyesconfig build showed no new warnings. As we do not have compatible Libertas USB hardware for exercising this firmware-download path, no runtime testing was able to be performed.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before 6c1f54a04813676c5a2150d99331c8d21f199374; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before 7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before ce829286f4935f1eb6b5dcb64da02910ce149c76; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before d497b7566e74920acfe283dd6b2cbf1682890796; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before 6cda91bbb8dc3d22ef0323008a12dcf73a5129da; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before 644640cde2fb216e6567de5eee780a38dbc95928; affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 before 63c2391deefb31e1b801b7f32bd502ca4808639b |
| Linux / Linux | affected 3.13; unaffected 0 before 3.13; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6c1f54a04813676c5a2150d99331c8d21f199374
- https://git.kernel.org/stable/c/7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06
- https://git.kernel.org/stable/c/ce829286f4935f1eb6b5dcb64da02910ce149c76
- https://git.kernel.org/stable/c/d497b7566e74920acfe283dd6b2cbf1682890796
- https://git.kernel.org/stable/c/eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c
- https://git.kernel.org/stable/c/6cda91bbb8dc3d22ef0323008a12dcf73a5129da
- https://git.kernel.org/stable/c/644640cde2fb216e6567de5eee780a38dbc95928
- https://git.kernel.org/stable/c/63c2391deefb31e1b801b7f32bd502ca4808639b