wifi: wfx: validate MIB read length before copying to caller
In the Linux kernel, the following vulnerability has been resolved: wifi: wfx: validate MIB read length before copying to caller wfx_hif_read_mib() copies reply->length bytes from the firmware response into the caller-provided buffer without checking that reply->length does not exceed val_len. A firmware response with a length field larger than expected overruns the caller buffer and reads past the end of the reply allocation. Replace the dead -ENOMEM check with an active validation that reply->length fits within val_len before the memcpy.
CVE-2026-98830
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-2026-98830
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": "f95a29d40782f4f0052a692a822de3ba044b19ff",
"lessThan": "819d4c1323e2a9b7329021d5367aa01add22b5dc",
"versionType": "git"
},
{
"status": "affected",
"version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
"lessThan": "02886c18a340da59df57365f29009e1258bfe333",
"versionType": "git"
},
{
"status": "affected",
"version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
"lessThan": "71d140099165de03128c00dd129f1eab21c6a3c4",
"versionType": "git"
},
{
"status": "affected",
"version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
"lessThan": "7acb36fd60a3e7b858f12e69a919c3609b281408",
"versionType": "git"
},
{
"status": "affected",
"version": "f95a29d40782f4f0052a692a822de3ba044b19ff",
"lessThan": "ce67ebe9d8629776ce38e6995ae72fb903c828db",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/silabs/wfx/hif_tx.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/silabs/wfx/hif_tx.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98830
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48994 · Revision 1
- Added to Heist Feed
- Publisher date