xen/netfront: drop RX packets with a short Ethernet header
In the Linux kernel, the following vulnerability has been resolved: xen/netfront: drop RX packets with a short Ethernet header handle_incoming_queue() pulls pull_to bytes into the head before calling eth_type_trans(). pull_to is the length of the first RX slot, capped at RX_COPY_THRESHOLD, and that length comes from the backend. Nothing checks it against ETH_HLEN. If the first slot is shorter than ETH_HLEN and more slots follow, the head ends up shorter than an Ethernet header while skb->len is longer, and eth_type_trans() BUG()s in __skb_pull(). If the whole packet is shorter than ETH_HLEN, eth_type_trans() reads the header past the end of the data instead. Pull at least ETH_HLEN, and drop the packet if that fails, which also drops packets too short to hold an Ethernet header. This also checks the return value of the pull, which was ignored.
CVE-2026-98375
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-2026-98375
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": "0d160211965b79de989cf2d170985abeb8da5ec6",
"lessThan": "0542d213253eec18785a24b603b28bd385dfe4a5",
"versionType": "git"
},
{
"status": "affected",
"version": "0d160211965b79de989cf2d170985abeb8da5ec6",
"lessThan": "236a17caebcff31f75bec5ff4136bde2de944e40",
"versionType": "git"
},
{
"status": "affected",
"version": "0d160211965b79de989cf2d170985abeb8da5ec6",
"lessThan": "72d2f54367895d6e236b9857892e2e6b6036e067",
"versionType": "git"
},
{
"status": "affected",
"version": "0d160211965b79de989cf2d170985abeb8da5ec6",
"lessThan": "e2b721bc30f40ffa7ccc36a56d4e8990b8c0538e",
"versionType": "git"
},
{
"status": "affected",
"version": "0d160211965b79de989cf2d170985abeb8da5ec6",
"lessThan": "089e58805c452e52179482b1025a8e309a57f801",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/xen-netfront.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.23"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.23",
"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/xen-netfront.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98375
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48877 · Revision 1
- Added to Heist Feed
- Publisher date