CVE-2026-74288

net: fib_rules: Don't dump dying fib_rule in fib_rules_dump().

State: Published
Severity: 7.8 High
Published: Aug 15, 2026
Updated: Oct 16, 2026
Reserved: Aug 15, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

net: fib_rules: Don't dump dying fib_rule in fib_rules_dump().

rocker_router_fib_event() calls fib_rule_get() during RCU dump.

If the fib_rule is dying, refcount_inc() will complain about it.

Let's call refcount_inc_not_zero() in fib_rules_dump().

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 0f929b59f4cd0e05bb1ecefe12b77e85911d4be2Affected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 4b7ae30c81c2ee10a644749a3704a5c797ccc308Affected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 2dfdc210d240bd48bb2ea746430b02b5571b6db9Affected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before a7ef30753353ba6a95d693b1863a0214222a199aAffected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 1fbc6c6efe78f4454a51afa0587efb6826f60f00Affected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before bb4a5b3c91af3c8d705bb2e9f6f8069a70db26fcAffected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 3af0bc1bd9039e2e50abf3e2d7fee411f38bce4eAffected 5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 2821e85c058f81c9948a2fb1a634f7b47457d51cAffected
LinuxLinux	4.12Affected before 4.12Not affected 5.10.261 through 5.10.Not affected 5.15.212 through 5.15.Not affected 6.1.178 through 6.1.Not affected 6.6.145 through 6.6.Not affected 6.12.97 through 6.12.Not affected 6.18.40 through 6.18.Not affected 7.1.5 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 0f929b59f4cd0e05bb1ecefe12b77e85911d4be2Affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 4b7ae30c81c2ee10a644749a3704a5c797ccc308Affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 2dfdc210d240bd48bb2ea746430b02b5571b6db9Affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before a7ef30753353ba6a95d693b1863a0214222a199aAffected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 1fbc6c6efe78f4454a51afa0587efb6826f60f00Affected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before bb4a5b3c91af3c8d705bb2e9f6f8069a70db26fcAffected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 3af0bc1bd9039e2e50abf3e2d7fee411f38bce4eAffected
5d7bfd141924a5ece21eb612ad3c56612f041c1e to before 2821e85c058f81c9948a2fb1a634f7b47457d51cAffected

LinuxLinux

4.12Affected
before 4.12Not affected
5.10.261 through 5.10.*Not affected
5.15.212 through 5.15.*Not affected
6.1.178 through 6.1.*Not affected
6.6.145 through 6.6.*Not affected
6.12.97 through 6.12.*Not affected
6.18.40 through 6.18.*Not affected
7.1.5 through 7.1.*Not affected
7.2 and laterNot affected

References

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