CVE-2026-68410
Description
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.
How to fix
- Linux Linux6c1f54a04813676c5a2150d99331c8d21f199374, 7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06, ce829286f4935f1eb6b5dcb64da02910ce149c76, d497b7566e74920acfe283dd6b2cbf1682890796, eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c, 6cda91bbb8dc3d22ef0323008a12dcf73a5129da, 644640cde2fb216e6567de5eee780a38dbc95928, 63c2391deefb31e1b801b7f32bd502ca4808639b or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < 6c1f54a04813676c5a2150d99331c8d21f199374, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < 7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < ce829286f4935f1eb6b5dcb64da02910ce149c76, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < d497b7566e74920acfe283dd6b2cbf1682890796, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < 6cda91bbb8dc3d22ef0323008a12dcf73a5129da, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < 644640cde2fb216e6567de5eee780a38dbc95928, 1dfba3060fe7ee03ccec25a91d35085142dfc295 ≤ v < 63c2391deefb31e1b801b7f32bd502ca4808639b, 3.13 | 6c1f54a04813676c5a2150d99331c8d21f199374, 7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06, ce829286f4935f1eb6b5dcb64da02910ce149c76, d497b7566e74920acfe283dd6b2cbf1682890796, eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c, 6cda91bbb8dc3d22ef0323008a12dcf73a5129da, 644640cde2fb216e6567de5eee780a38dbc95928, 63c2391deefb31e1b801b7f32bd502ca4808639b |
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