vxlan: use pskb_network_may_pull() for transmit path header pulls
In the Linux kernel, the following vulnerability has been resolved: vxlan: use pskb_network_may_pull() for transmit path header pulls In vxlan_xmit(), arp_reduce(), and vxlan_mdb_entry_skb_get(), pskb_may_pull() was being called to verify the availability of network layer headers (ARP, IPv6/ND, IP/IPv6 MDB keys). However, during transmit skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, len) only checks len bytes from skb->data rather than skb_network_offset(skb) + len, which can leave part of the network header in non-linear frags. Replace these remaining pskb_may_pull() calls with pskb_network_may_pull() to properly account for the MAC header offset.
CVE-2026-74474
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-2026-74474
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": "e4f67addf158f98f8197e08974966b18480dc751",
"lessThan": "371425d4be7795e9158388af9eee0201e6047410",
"versionType": "git"
},
{
"status": "affected",
"version": "e4f67addf158f98f8197e08974966b18480dc751",
"lessThan": "bb01c51950c3ff3c76acdd54b85ab38ccc2a8bb4",
"versionType": "git"
},
{
"status": "affected",
"version": "e4f67addf158f98f8197e08974966b18480dc751",
"lessThan": "6146901881f09ef063eb34ad389f63231f8486f5",
"versionType": "git"
},
{
"status": "affected",
"version": "e4f67addf158f98f8197e08974966b18480dc751",
"lessThan": "94dee751aad627b3645d424b5d0c736d394573e9",
"versionType": "git"
},
{
"status": "affected",
"version": "e4f67addf158f98f8197e08974966b18480dc751",
"lessThan": "7076a34b6e33315dc160b4612bfea1c597495585",
"versionType": "git"
},
{
"status": "affected",
"version": "e4f67addf158f98f8197e08974966b18480dc751",
"lessThan": "b9553558b48db54ac9273e6b98d7263ef5c1a329",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/vxlan/vxlan_core.c",
"drivers/net/vxlan/vxlan_mdb.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.153",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.105",
"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": [
"drivers/net/vxlan/vxlan_core.c",
"drivers/net/vxlan/vxlan_mdb.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74474
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #33166 · Revision 1
- Added to Heist Feed
- Publisher date