CVE-2026-74288

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < 0f929b59f4cd0e05bb1ecefe12b77e85911d4be2affected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < 4b7ae30c81c2ee10a644749a3704a5c797ccc308affected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < 2dfdc210d240bd48bb2ea746430b02b5571b6db9affected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < a7ef30753353ba6a95d693b1863a0214222a199aaffected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < 1fbc6c6efe78f4454a51afa0587efb6826f60f00affected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < bb4a5b3c91af3c8d705bb2e9f6f8069a70db26fcaffected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < 3af0bc1bd9039e2e50abf3e2d7fee411f38bce4eaffected
LinuxLinux5d7bfd141924a5ece21eb612ad3c56612f041c1e < 2821e85c058f81c9948a2fb1a634f7b47457d51caffected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.10.261 <= 5.10.*unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.97 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References