wifi: libipw: reject too-short beacon and probe responses
In the Linux kernel, the following vulnerability has been resolved: wifi: libipw: reject too-short beacon and probe responses libipw_process_probe_response() and the libipw_network_init() call it makes assume the frame contains the full 36-byte beacon and probe response prefix, but the ipw2100 and ipw2200 receive paths only establish that a management frame carries the generic 24-byte three-address header. libipw_network_init() then computes the information element length as stats->len - sizeof(*beacon) stats->len is a u16 and sizeof() has type size_t, so the subtraction is evaluated as size_t and wraps instead of going negative. Truncating that to the u16 length parameter of libipw_parse_info_param() yields 65524 for a 24-byte beacon, and the parser then walks the receive buffer as if it held almost 64 KiB of information elements, reading past the allocation. Reject the frame before any fixed field is touched. Found by an AI-assisted review of length arithmetic in management frame parsers. Verified with a KUnit case under Generic KASAN on arm64 under QEMU; I do not have the hardware, so it is not tested on a real device.
CVE-2026-98349
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-2026-98349
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": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "cee6f141b3bebe62eb0363fd147acb52023935f0",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "23afeb5d2bdfd34c8a0a661876291a4fa9978293",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "89959ff00a978f3172726d3d5f861ee6f1aae26d",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "14ae269c1306053ddf1ccf37c4bd66e085a652d1",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "ff756e6647722b7d225d882f7bdb186d8eee318e",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "2c87bbc00dc93149d1dc4f803ad92d92e4ef3758",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "19959fb60228f6dccc40d55507f8b1a751c2dc89",
"versionType": "git"
},
{
"status": "affected",
"version": "b453872c35cfcbdbf5a794737817f7d4e7b1b579",
"lessThan": "5ce5721e8cbe3e80db8f43851cc2a2a92485ef4b",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"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": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/wireless/intel/ipw2x00/libipw_rx.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98349
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #38427 · Revision 1
- Added to Heist Feed
- Publisher date