wifi: cfg80211: check IP header size in cfg80211_classify8021d()
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: check IP header size in cfg80211_classify8021d() A frame that looks like IP can be transmitted, but be too short, so the DS field is read incorrectly: BUG: KMSAN: uninit-value in cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027 cfg80211_classify8021d+0x99d/0x12b0 net/wireless/util.c:1027 ieee80211_select_queue+0x37a/0x9e0 net/mac80211/wme.c:180 __ieee80211_subif_start_xmit+0x60f/0x1d90 net/mac80211/tx.c:4304 ieee80211_subif_start_xmit+0xa8/0x6d0 net/mac80211/tx.c:4538 ... packet_sendmsg+0x9173/0xa2a0 net/packet/af_packet.c:3108 Use skb_header_pointer() like the MPLS case.
CVE-2026-98345
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-2026-98345
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": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "18d5547327c202cda33ad2bbd203220c2c62c8a7",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "3ff17ffa8d02e0e3f6b2f6e57af4aac511f5b734",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "c4fbcf1e614ef0755fcc751fdfca21b0bf4e0ef7",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "12c0abd4d1c1b04a7663d04ba85268bc9ad9c017",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "f33ad4e2f846e55cf4637419268f093ac9f1a765",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "a2cdb4a675ca04c4ac8cc962848082d8ce065008",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "65893c8d28f239c7ddad5a83683be193a9133e9b",
"versionType": "git"
},
{
"status": "affected",
"version": "e31a16d6f64ef0e324c6f54d5112703c3f13a9c4",
"lessThan": "48b2c5c628b09cf36cbeca53e0432fc2a7518be7",
"versionType": "git"
}
],
"programFiles": [
"net/wireless/util.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.31",
"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": [
"net/wireless/util.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98345
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38424 · Revision 1
- Added to Heist Feed
- Publisher date