wifi: cfg80211: validate assoc response length before status and IE access
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: validate assoc response length before status and IE access cfg80211_rx_assoc_resp() initialises the status and response-IE fields of cfg80211_connect_resp_params from the management frame before proving that the frame is long enough for those offsets. S1G and regular association responses also have different IE offsets, but the S1G path only patched resp_ie after the unsafe initialiser had already run. Defer resp_ie, resp_ie_len, and status to after the link-iteration loop. Use a bool to remember whether the frame is S1G, then validate the appropriate minimum length and set all three fields in a single if/else block. Funnel short-frame and SME-reject cleanup through a shared free_bss label for the abandon paths.
CVE-2026-93806
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93806
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6829c878ecd24ff0ae41b4668c7e9d0f11b66942",
"lessThan": "3bcaaaa4ad334053ceea2ea2f0623f22afe2e1ac",
"versionType": "git"
},
{
"status": "affected",
"version": "6829c878ecd24ff0ae41b4668c7e9d0f11b66942",
"lessThan": "71be658246c903b9e96976a23c23800675896a1b",
"versionType": "git"
},
{
"status": "affected",
"version": "6829c878ecd24ff0ae41b4668c7e9d0f11b66942",
"lessThan": "a57310600c1e2b9ada0f37c96e8f48aef47d3093",
"versionType": "git"
},
{
"status": "affected",
"version": "6829c878ecd24ff0ae41b4668c7e9d0f11b66942",
"lessThan": "78ac450ad4624d6b2999cb4eeb28916767f81247",
"versionType": "git"
},
{
"status": "affected",
"version": "6829c878ecd24ff0ae41b4668c7e9d0f11b66942",
"lessThan": "b760113aeca2e9362d56bf9e9263373ffe6c8eb3",
"versionType": "git"
}
],
"programFiles": [
"net/wireless/mlme.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.32"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.32",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/wireless/mlme.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93806
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #8281 · Revision 1
- Added to Heist Feed
- Publisher date