Home

Description

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.

PUBLISHED Reserved 2026-01-13 | Published 2026-04-03 | Updated 2026-05-11 | Assigner Linux




HIGH: 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Product status

Default status
unaffected

be226352e8dc77d3313c096b2d8e7f69bf6980fc (git) before 0d087d00161f562d5047cc4009bb0c6a19daf9f1
affected

be226352e8dc77d3313c096b2d8e7f69bf6980fc (git) before 8431c602f551549f082bbfa67f3003f2d8e3e132
affected

Default status
affected

6.14
affected

Any version before 6.14
unaffected

6.19.10 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/0d087d00161f562d5047cc4009bb0c6a19daf9f1

git.kernel.org/...c/8431c602f551549f082bbfa67f3003f2d8e3e132

cve.org (CVE-2026-23459)

nvd.nist.gov (CVE-2026-23459)

Download JSON