CVE-2026-23442 — NULL Pointer Dereference in Linux
Severity
5.5MEDIUM
No vectorEPSS
0.0%
top 93.50%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 3
Description
In the Linux kernel, the following vulnerability has been resolved:
ipv6: add NULL checks for idev in SRv6 paths
__in6_dev_get() can return NULL when the device has no IPv6 configuration
(e.g. MTU < IPV6_MIN_MTU or after NETDEV_UNREGISTER).
Add NULL checks for idev returned by __in6_dev_get() in both
seg6_hmac_validate_skb() and ipv6_srh_rcv() to prevent potential NULL
pointer dereferences.
Affected Packages4 packages
▶CVEListV5linux/linux1ababeba4a21f3dba3da3523c670b207fb2feb62 — a25853c9feea7bbf31d157ff6e004d2d3b4f7f13+2
🔴Vulnerability Details
2OSV▶
CVE-2026-23442: In the Linux kernel, the following vulnerability has been resolved: ipv6: add NULL checks for idev in SRv6 paths __in6_dev_get() can return NULL when↗2026-04-03
GHSA▶
GHSA-prgg-rgfw-vr94: In the Linux kernel, the following vulnerability has been resolved:
ipv6: add NULL checks for idev in SRv6 paths
__in6_dev_get() can return NULL whe↗2026-04-03