CVE-2026-68311 (GCVE-0-2026-68311)
Vulnerability from cvelistv5
Published
2026-08-10 12:02
Modified
2026-08-17 05:03
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7925: guard link STA in decap offload
mt7925_sta_set_decap_offload() iterates over the vif valid_links mask
when updating decap offload state for an MLO station. The station may not
have a link STA for every valid link of the vif, so mt792x_sta_to_link()
can return NULL for a link that belongs to the vif but not to the station.
The function currently dereferences mlink before checking whether the
link WCID is ready. If mlink is NULL, setting or clearing
MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer.
Skip links without a station link before touching mlink->wcid.
References
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/mediatek/mt76/mt7925/main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "6.11"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
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"cpeApplicability": [
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"nodes": [
{
"cpeMatch": [
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}
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"negate": false,
"operator": "OR"
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}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7925: guard link STA in decap offload\n\nmt7925_sta_set_decap_offload() iterates over the vif valid_links mask\nwhen updating decap offload state for an MLO station. The station may not\nhave a link STA for every valid link of the vif, so mt792x_sta_to_link()\ncan return NULL for a link that belongs to the vif but not to the station.\n\nThe function currently dereferences mlink before checking whether the\nlink WCID is ready. If mlink is NULL, setting or clearing\nMT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer.\n\nSkip links without a station link before touching mlink-\u003ewcid."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:03:07.684Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/1e608cae1ba0b4a600b752efa223fd2be376b143"
},
{
"url": "https://git.kernel.org/stable/c/f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3"
},
{
"url": "https://git.kernel.org/stable/c/d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd"
},
{
"url": "https://git.kernel.org/stable/c/96ea44f2269f30364cffa054ee3a87e595bef0d4"
}
],
"title": "wifi: mt76: mt7925: guard link STA in decap offload",
"x_generator": {
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-68311",
"datePublished": "2026-08-10T12:02:45.919Z",
"dateReserved": "2026-07-30T09:28:09.381Z",
"dateUpdated": "2026-08-17T05:03:07.684Z",
"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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