ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS
In the Linux kernel, the following vulnerability has been resolved: ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS Blamed commits forgot that vxlan/geneve use udp_tunnel[6]_xmit_skb() which call iptunnel_xmit_stats(). iptunnel_xmit_stats() was assuming tunnels were only using NETDEV_PCPU_STAT_TSTATS. @syncp offset in pcpu_sw_netstats and pcpu_dstats is different. 32bit kernels would either have corruptions or freezes if the syncp sequence was overwritten. This patch also moves pcpu_stat_type closer to dev->{t,d}stats to avoid a potential cache line miss since iptunnel_xmit_stats() needs to read it.
CVE-2026-23459
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-2026-23459
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": "1db9041e91ac574f1cecc0e98e69ac35832e8088",
"lessThan": "127c5e6e2d6fa8185314537c08204ec3515eae99",
"versionType": "git"
},
{
"status": "affected",
"version": "cb1c1f3b7ef908408064734fb6bdaf5811b8b84c",
"lessThan": "e40e2d11ced8119d3e4469ebe91264bc1cf71530",
"versionType": "git"
},
{
"status": "affected",
"version": "be226352e8dc77d3313c096b2d8e7f69bf6980fc",
"lessThan": "5d562153b4719234227f99c2fb529f98a6a44d15",
"versionType": "git"
},
{
"status": "affected",
"version": "be226352e8dc77d3313c096b2d8e7f69bf6980fc",
"lessThan": "0d087d00161f562d5047cc4009bb0c6a19daf9f1",
"versionType": "git"
},
{
"status": "affected",
"version": "be226352e8dc77d3313c096b2d8e7f69bf6980fc",
"lessThan": "8431c602f551549f082bbfa67f3003f2d8e3e132",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.153",
"lessThan": "6.6.160",
"versionType": "semver"
}
],
"programFiles": [
"include/linux/netdevice.h",
"include/net/ip_tunnels.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.10",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"include/linux/netdevice.h",
"include/net/ip_tunnels.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23459
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46124 · Revision 1
- Added to Heist Feed
- Publisher date