xsk: validate metadata when processing requests
In the Linux kernel, the following vulnerability has been resolved: xsk: validate metadata when processing requests The zero-copy path validates TX metadata while obtaining the descriptor context, then reads it again later when preparing the hardware request. User space can change the metadata between those operations and bypass the original validation. Validate the metadata in xsk_tx_metadata_request() and use the resulting flags snapshot for every feature check. Read request fields once so all zero-copy drivers process only values observed after successful validation.
CVE-2026-74707
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-2026-74707
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": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
"lessThan": "5fd121971912dee2f5af1efec64462ac722deb17",
"versionType": "git"
},
{
"status": "affected",
"version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
"lessThan": "0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba",
"versionType": "git"
},
{
"status": "affected",
"version": "ca4419f15abd19ba8be1e109661b60f9f5b6c9f0",
"lessThan": "849b1664dbda1cf6c63e0fd4f9dec23782b8c851",
"versionType": "git"
},
{
"status": "affected",
"version": "d9d736c416c9a85f84e15435ba82a177262e745b",
"versionType": "git"
},
{
"status": "affected",
"version": "6.14.2",
"lessThan": "6.15",
"versionType": "semver"
}
],
"programFiles": [
"drivers/net/ethernet/intel/igc/igc_main.c",
"drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c",
"drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
"include/net/libeth/xsk.h",
"include/net/xdp_sock_drv.h",
"net/xdp/xsk_buff_pool.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.45",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.9",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/intel/igc/igc_main.c",
"drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c",
"drivers/net/ethernet/stmicro/stmmac/stmmac_main.c",
"include/net/libeth/xsk.h",
"include/net/xdp_sock_drv.h",
"net/xdp/xsk_buff_pool.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74707
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34279 · Revision 1
- Added to Heist Feed
- Publisher date