CVE-2026-23442

ipv6: add NULL checks for idev in SRv6 paths

State: Published
Severity: Not scored
Published: Apr 3, 2026
Updated: Oct 15, 2026
Reserved: Jan 13, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4Affected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 83d705d35e583cb1b1eacf196dfe7b77d442018eAffected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before d1bd8b9edc6752d10f84d28ff64f842401ce336dAffected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 50352fc103928e10e8729abc79a0d05abef26c4dAffected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before bc9843c39f9932a8b36efd1d362ea00bb88e4e78Affected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before c5cedee5d97382176573bbe21e1724e737a5eb64Affected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before a25853c9feea7bbf31d157ff6e004d2d3b4f7f13Affected 1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 06413793526251870e20402c39930804f14d59c0Affected
LinuxLinux	4.10Affected before 4.10Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.136 through 6.6.Not affected 6.12.83 through 6.12.Not affected 6.18.25 through 6.18.Not affected 6.19.10 through 6.19.*Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 0348fa0ada37cef7c6b5ab2a428bb2c6aee784e4Affected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 83d705d35e583cb1b1eacf196dfe7b77d442018eAffected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before d1bd8b9edc6752d10f84d28ff64f842401ce336dAffected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 50352fc103928e10e8729abc79a0d05abef26c4dAffected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before bc9843c39f9932a8b36efd1d362ea00bb88e4e78Affected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before c5cedee5d97382176573bbe21e1724e737a5eb64Affected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before a25853c9feea7bbf31d157ff6e004d2d3b4f7f13Affected
1ababeba4a21f3dba3da3523c670b207fb2feb62 to before 06413793526251870e20402c39930804f14d59c0Affected

LinuxLinux

4.10Affected
before 4.10Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.136 through 6.6.*Not affected
6.12.83 through 6.12.*Not affected
6.18.25 through 6.18.*Not affected
6.19.10 through 6.19.*Not affected
7.0 and laterNot affected

References

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