CVE-2026-23459

HIGH EPSS 21.6%
Published Apr 3, 20262mo ago · Modified Jun 17, 20261w ago
8.2 CVSS 3.1
High
Find Similar
Published Apr 3, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
8.2
Exploitability
3.9
Impact
4.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
21.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥6.14  –  <6.19.10
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 2

  • git.kernel.org https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132
    Patch