wifi: libertas: fix WARNING in usb_tx_block

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Summary

CVECVE-2026-43255
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:46 UTC
Updated2026-05-11 18:18:36 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix WARNING in usb_tx_block The function usb_tx_block() submits cardp->tx_urb without ensuring that any previous transmission on this URB has completed. If a second call occurs while the URB is still active (e.g. during rapid firmware loading), usb_submit_urb() detects the active state and triggers a warning: 'URB submitted while active'. Fix this by enforcing serialization: call usb_kill_urb() before submitting the new request. This ensures the URB is idle and safe to reuse.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 498525d8358d6d20918787e59736d5b6a021e9fd git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 2902a9b4415a6bafc9b1e5dd360f065d757a0bb7 git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 948a39c95d0f8d73722910f8cdb7b6e3e9206232 git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 5bfb25495e391a1be0db94b15715174fa06b93a1 git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 b82073564373e68c6ae3a96039fae14cd002a496 git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 3308c7504e093b22e91a4468470309cee2e26b83 git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 fc188b44547dea4e7350833171982a6312befde9 git Not specified
CNA Linux Linux affected 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 d66676e6ca96bf8680f869a9bd6573b26c634622 git Not specified
CNA Linux Linux affected 2.6.22 Not specified
CNA Linux Linux unaffected 2.6.22 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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