CVE-2026-43255 (GCVE-0-2026-43255)
Vulnerability from cvelistv5
Published
2026-05-06 11:28
Modified
2026-05-11 22:21
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In 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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 Version: 876c9d3aeb989cf1961f2c228d309ba5dcfb1172 |
||
{
"containers": {
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"programFiles": [
"drivers/net/wireless/marvell/libertas/if_usb.c"
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"versions": [
{
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"version": "2.6.22"
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"status": "unaffected",
"version": "0",
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},
{
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"status": "unaffected",
"version": "5.10.252",
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},
{
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"status": "unaffected",
"version": "5.15.202",
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},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.165",
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},
{
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"status": "unaffected",
"version": "6.6.128",
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{
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"status": "unaffected",
"version": "6.12.75",
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{
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"status": "unaffected",
"version": "6.18.16",
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{
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{
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"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: libertas: fix WARNING in usb_tx_block\n\nThe function usb_tx_block() submits cardp-\u003etx_urb without ensuring that\nany previous transmission on this URB has completed. If a second call\noccurs while the URB is still active (e.g. during rapid firmware loading),\nusb_submit_urb() detects the active state and triggers a warning:\n\u0027URB submitted while active\u0027.\n\nFix this by enforcing serialization: call usb_kill_urb() before\nsubmitting the new request. This ensures the URB is idle and safe to reuse."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T22:21:00.707Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/498525d8358d6d20918787e59736d5b6a021e9fd"
},
{
"url": "https://git.kernel.org/stable/c/2902a9b4415a6bafc9b1e5dd360f065d757a0bb7"
},
{
"url": "https://git.kernel.org/stable/c/948a39c95d0f8d73722910f8cdb7b6e3e9206232"
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{
"url": "https://git.kernel.org/stable/c/5bfb25495e391a1be0db94b15715174fa06b93a1"
},
{
"url": "https://git.kernel.org/stable/c/b82073564373e68c6ae3a96039fae14cd002a496"
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{
"url": "https://git.kernel.org/stable/c/3308c7504e093b22e91a4468470309cee2e26b83"
},
{
"url": "https://git.kernel.org/stable/c/fc188b44547dea4e7350833171982a6312befde9"
},
{
"url": "https://git.kernel.org/stable/c/d66676e6ca96bf8680f869a9bd6573b26c634622"
}
],
"title": "wifi: libertas: fix WARNING in usb_tx_block",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-43255",
"datePublished": "2026-05-06T11:28:44.522Z",
"dateReserved": "2026-05-01T14:12:55.996Z",
"dateUpdated": "2026-05-11T22:21:00.707Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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