wifi: ath11k: fix overreads in ath11k_wmi_process_csa_switch_count_event()
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix overreads in ath11k_wmi_process_csa_switch_count_event() There is no policy entry for WMI_TAG_PDEV_CSA_SWITCH_COUNT_STATUS_EVENT, so the parse infrastructure does not enforce a minimum length for the event struct. Additionally, the num_vdevs field is taken directly from firmware and used as a loop bound over the vdev_ids array without checking that it fits within the TLV payload. Either condition can cause an out-of-bounds read. Add a TLV policy entry for WMI_TAG_PDEV_CSA_SWITCH_COUNT_STATUS_EVENT so the parse infrastructure enforces a minimum length for the fixed-size event struct. Add a helper ath11k_wmi_tlv_data_len() to recover the payload length of a parsed TLV from the header preceding its data pointer. Use it in ath11k_wmi_process_csa_switch_count_event() to bound num_vdevs before the loop. Compile tested only.
CVE-2026-90407
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-2026-90407
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": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "f760b7d7e43584d2fa9bffcec1a04e502609f827",
"versionType": "git"
},
{
"status": "affected",
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "d6625dc5f1fe42cd81b8c57a1f5317afb9b410ce",
"versionType": "git"
},
{
"status": "affected",
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "0364926fb4bfb5b798e5fe2785b3023b4f767327",
"versionType": "git"
},
{
"status": "affected",
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "5de2b8c53714ad58f2fda118cd29ebbe31b38665",
"versionType": "git"
},
{
"status": "affected",
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "208d7fdb85976a737a715b81d54efaff6703880c",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/ath/ath11k/wmi.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/ath/ath11k/wmi.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90407
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36729 · Revision 1
- Added to Heist Feed
- Publisher date