xsk: drain continuation descs after overflow in xsk_build_skb()
In the Linux kernel, the following vulnerability has been resolved: xsk: drain continuation descs after overflow in xsk_build_skb() Fix generic xmit path multi-buffer logic when packets are either too big (count of descriptors exceed MAX_SKB_FRAGS) or an invalid descriptor is included in fragmented packet. Introduce xdp_sock::drain_cont and act upon this flag - when it is set, keep on consuming descriptors from AF_XDP Tx ring and put them directly onto Cq. Previously these descriptors were silently lost and could never be reached again.
CVE-2026-74559
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-2026-74559
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": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a",
"lessThan": "ecd0d1cde0478c232a867f14ec99cf97aff5eb30",
"versionType": "git"
},
{
"status": "affected",
"version": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a",
"lessThan": "ceb00cb87a22c42d20c39336213db2b843ca9e34",
"versionType": "git"
},
{
"status": "affected",
"version": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a",
"lessThan": "5e94d74e4f3baebaa083288f33b4be7ce0a34982",
"versionType": "git"
},
{
"status": "affected",
"version": "cf24f5a5feeaae34c1a34d1e04f8ac697290427a",
"lessThan": "bd44a6dcd4248883de90f5dad53ae80066e27096",
"versionType": "git"
}
],
"programFiles": [
"include/net/xdp_sock.h",
"net/xdp/xsk.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.44",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.8",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/net/xdp_sock.h",
"net/xdp/xsk.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74559
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46576 · Revision 1
- Added to Heist Feed
- Publisher date