CVE-2026-23459
- Source
- https://cve.org/CVERecord?id=CVE-2026-23459
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23459.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-23459
- Downstream
- Published
- 2026-04-03T15:15:39.665Z
- Modified
- 2026-07-08T07:59:52.426399678Z
- Severity
-
- 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
- Summary
- ip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
iptunnel: adapt iptunnelxmitstats() to NETDEVPCPUSTATDSTATS
Blamed commits forgot that vxlan/geneve use udptunnel[6]xmitskb() which call iptunnelxmit_stats().
iptunnelxmitstats() was assuming tunnels were only using NETDEVPCPUSTAT_TSTATS.
@syncp offset in pcpuswnetstats and pcpu_dstats is different.
32bit kernels would either have corruptions or freezes if the syncp sequence was overwritten.
This patch also moves pcpustattype closer to dev->{t,d}stats to avoid a potential cache line miss since iptunnelxmitstats() needs to read it.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23459.json", "cna_assigner": "Linux" }- References
-
- https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1
- https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23459.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-23459
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git