CVE-2026-68410

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.

Database specific

{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68410.json"
}

References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type: GIT
Repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events: Introduced

1dfba3060fe7ee03ccec25a91d35085142dfc295

Fixed

6c1f54a04813676c5a2150d99331c8d21f199374

Fixed

7f28722b3e4e0c8d49c859fea4a9b1fa13b5ae06

Fixed

ce829286f4935f1eb6b5dcb64da02910ce149c76

Fixed

d497b7566e74920acfe283dd6b2cbf1682890796

Fixed

eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c

Fixed

6cda91bbb8dc3d22ef0323008a12dcf73a5129da

Fixed

644640cde2fb216e6567de5eee780a38dbc95928

Fixed

63c2391deefb31e1b801b7f32bd502ca4808639b

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68410.json"

Linux / Kernel

Package

Name: Kernel

Affected ranges

Type: ECOSYSTEM
Events: Introduced

3.13.0

Fixed

5.10.265

Type: ECOSYSTEM
Events: Introduced

5.11.0

Fixed

5.15.216

Type: ECOSYSTEM
Events: Introduced

5.16.0

Fixed

6.1.183

Type: ECOSYSTEM
Events: Introduced

6.2.0

Fixed

6.6.148

Type: ECOSYSTEM
Events: Introduced

6.7.0

Fixed

6.12.101

Type: ECOSYSTEM
Events: Introduced

6.13.0

Fixed

6.18.42

Type: ECOSYSTEM
Events: Introduced

6.19.0

Fixed

7.1.6

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-68410.json"