wifi: libertas: fix memory leak in helper_firmware_cb()

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Summary

CVECVE-2026-68410
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:34 UTC
Updated2026-08-10 13:20:34 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 d497b7566e74920acfe283dd6b2cbf1682890796 git Not specified
CNA Linux Linux affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c git Not specified
CNA Linux Linux affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 6cda91bbb8dc3d22ef0323008a12dcf73a5129da git Not specified
CNA Linux Linux affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 644640cde2fb216e6567de5eee780a38dbc95928 git Not specified
CNA Linux Linux affected 1dfba3060fe7ee03ccec25a91d35085142dfc295 63c2391deefb31e1b801b7f32bd502ca4808639b git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 semver Not specified
CNA Linux Linux unaffected 6.6.148 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d497b7566e74920acfe283dd6b2cbf1682890796 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6cda91bbb8dc3d22ef0323008a12dcf73a5129da 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/644640cde2fb216e6567de5eee780a38dbc95928 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/eaeb1d74a47fc4864f2c754c0b9d654a9b7dc55c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/63c2391deefb31e1b801b7f32bd502ca4808639b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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