wifi: ath11k: fix stride mismatch in mac_phy_caps_parse()
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix stride mismatch in mac_phy_caps_parse() Currently, in ath11k_wmi_tlv_mac_phy_caps_parse(), kcalloc() sizes the mac_phy_caps buffer as tot_phy_id * len, where len is clamped to min(firmware_len, sizeof(struct wmi_mac_phy_capabilities)). The subsequent memcpy() destination advances by sizeof(full struct) per slot via C pointer arithmetic, not by the clamped len. When firmware sends short TLVs, the second and later slots are written past the end of the allocation. The reader in ath11k_pull_mac_phy_cap_svc_ready_ext() also indexes the buffer with full-struct pointer arithmetic, so the allocation must match that stride. Fix by using kzalloc_objs(), which derives the element size from the pointer type, making allocation size and pointer stride provably consistent regardless of what len the firmware provides. Compile tested only.
CVE-2026-90398
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-2026-90398
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": "5b90fc760db5a969ed26d70f8e62c91915f012bd",
"lessThan": "b2ecd548f89a4a6c14b5eb4abc825f92b3068dda",
"versionType": "git"
},
{
"status": "affected",
"version": "5b90fc760db5a969ed26d70f8e62c91915f012bd",
"lessThan": "bbb3b3334a9ed850c5b332eedea107796e691237",
"versionType": "git"
},
{
"status": "affected",
"version": "5b90fc760db5a969ed26d70f8e62c91915f012bd",
"lessThan": "75185e2b214e842b7e0af29e5d1fef155662b8b1",
"versionType": "git"
},
{
"status": "affected",
"version": "5b90fc760db5a969ed26d70f8e62c91915f012bd",
"lessThan": "acff2713c3212ade15051e7b421f15c89927e70f",
"versionType": "git"
},
{
"status": "affected",
"version": "5b90fc760db5a969ed26d70f8e62c91915f012bd",
"lessThan": "7a246c72132eb943b5844ba79dad597b47429dba",
"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": "6.6.160",
"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-2026-90398
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48687 · Revision 1
- Added to Heist Feed
- Publisher date