CVE-2026-68410

wifi: libertas: fix memory leak in helper_firmware_cb()

N/A

Published: August 10, 2026 at 12:04 PM UTC

Updated: August 19, 2026 at 05:20 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.13 ≤ v < 5.10.2653.13 ≤ v < 5.15.2163.13 ≤ v < 6.1.1833.13 ≤ v < 6.12.1013.13 ≤ v < 6.18.423.13 ≤ v < 6.6.1483.13 ≤ v < 7.1.63.13 ≤ v < 7.21dfba3060fe7ee03ccec25a91d35085142dfc2953.13

Vendor states this is fixed in 63c2391deefb31e1b801b7f32bd502ca4808639b (fixed)

Vendor states this is fixed in 644640cde2fb216e6567de5eee780a38dbc95928 (fixed)

Vendor states this is fixed in 6c1f54a04813676c5a2150d99331c8d21f199374 (fixed)

Vendor states this is fixed in 6cda91bbb8dc3d22ef0323008a12dcf73a5129da (fixed)

Vendor states this is fixed in 7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06 (fixed)

Vendor states this is fixed in ce829286f4935f1eb6b5dcb64da02910ce149c76 (fixed)

Vendor states this is fixed in d497b7566e74920acfe283dd6b2cbf1682890796 (fixed)

Vendor states this is fixed in eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c (fixed)

Vendor states this is fixed in 3.13 (unaffected)

Vendor states this is fixed in 5.10.265 (unaffected)

Vendor states this is fixed in 5.15.216 (unaffected)

Vendor states this is fixed in 6.1.183 (unaffected)