net: pull headers in qdisc_pkt_len_segs_init()
In the Linux kernel, the following vulnerability has been resolved: net: pull headers in qdisc_pkt_len_segs_init() Most ndo_start_xmit() methods expects headers of gso packets to be already in skb->head. net/core/tso.c users are particularly at risk, because tso_build_hdr() does a memcpy(hdr, skb->data, hdr_len); qdisc_pkt_len_segs_init() already does a dissection of gso packets. Use pskb_may_pull() instead of skb_header_pointer() to make sure drivers do not have to reimplement this. Some malicious packets could be fed, detect them so that we can drop them sooner with a new SKB_DROP_REASON_SKB_BAD_GSO drop_reason.
CVE-2026-53091
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-2026-53091
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": "e876f208af18b074f800656e4d1b99da75b2135f",
"lessThan": "5895cfc76924a629c6eaa5e5f049de642860045f",
"versionType": "git"
},
{
"status": "affected",
"version": "e876f208af18b074f800656e4d1b99da75b2135f",
"lessThan": "7564dc804d8289d2e5c6edb8173754051b71bff4",
"versionType": "git"
},
{
"status": "affected",
"version": "e876f208af18b074f800656e4d1b99da75b2135f",
"lessThan": "9d4f5c68f5ad4ab425f3ce1500c97c9f9743999a",
"versionType": "git"
},
{
"status": "affected",
"version": "e876f208af18b074f800656e4d1b99da75b2135f",
"lessThan": "7fb4c19670110f052c04e1ec1d2b953b9f4f57e4",
"versionType": "git"
}
],
"programFiles": [
"include/net/dropreason-core.h",
"net/core/dev.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/net/dropreason-core.h",
"net/core/dev.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53091
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46360 · Revision 1
- Added to Heist Feed
- Publisher date