wifi: mwifiex: bound uAP association event IEs to the event buffer
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: bound uAP association event IEs to the event buffer mwifiex_process_uap_event() handles EVENT_UAP_STA_ASSOC by exposing the (re)association request IEs that the firmware copies into the event: sinfo->assoc_req_ies = &event->data[len]; len = (u8 *)sinfo->assoc_req_ies - (u8 *)&event->frame_control; sinfo->assoc_req_ies_len = le16_to_cpu(event->len) - (u16)len; event->len is supplied by the device firmware and is never validated, and the subtraction is unchecked. assoc_req_ies points into adapter->event_body[MAX_EVENT_SIZE], a fixed-size array embedded in the kmalloc()'d struct mwifiex_adapter. On the ap_11n_enabled path mwifiex_set_sta_ht_cap() walks these IEs with cfg80211_find_ie(), whose for_each_element() loop dereferences each element header. A firmware-reported event->len larger than the bytes actually received makes assoc_req_ies_len describe IEs that extend past event_body, so the walk reads out of the adapter slab object, a slab-out-of-bounds read (KASAN: slab-out-of-bounds in cfg80211_find_ie). An event->len smaller than the header instead makes the int subtraction negative, which wraps to a huge size_t when stored in assoc_req_ies_len. The same length is handed to cfg80211_new_sta(), so a more modest over-claim can also copy stale event_body bytes into the NL80211_CMD_NEW_STATION notification. A malicious or malfunctioning mwifiex device (USB/SDIO/PCIe) can deliver such an event while
CVE-2026-68326
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-2026-68326
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": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "a616616b938f7922a93e79bef16b4643c57c0922",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "1ae00b6d9a6c82eb3de151d9b04ed59e06cc100f",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "e7e93d3e8c240bdb70c41e79d169d74dfb442843",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "a3f47d7c75ddad1a14621a309286f9fae3cba191",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "ad26c75ae25749313248f06510ebe43b5bf4adcc",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "b6766d7ea43edf5de9d5a572bc58b631d09efe4b",
"versionType": "git"
},
{
"status": "affected",
"version": "e568634ae7ac379661c90731d480e067929420a1",
"lessThan": "f0858bfc7d3cab411a447b88e3ef970e575032c9",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/marvell/mwifiex/uap_event.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.265",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.216",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.183",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/marvell/mwifiex/uap_event.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68326
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41696 · Revision 1
- Added to Heist Feed
- Publisher date