CVE-2026-45847 PUBLISHED

net: remove WARN_ON_ONCE when accessing forward path array

Assigner: Linux
Reserved: 13.05.2026 Published: 27.05.2026 Updated: 27.05.2026

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

net: remove WARN_ON_ONCE when accessing forward path array

Although unlikely, recent support for IPIP tunnels increases chances of reaching this WARN_ON_ONCE if userspace manages to build a sufficiently long forward path.

Remove it.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to 548244c2f542aa0ad49453e9306e715a3877bc44 (excl.)
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to dcf9b3c90e5560339649d088836529883fb509f3 (excl.)
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to 9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6 (excl.)
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to 959ea349c7e2d4edf07b6838ca7e59345fe61a08 (excl.)
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to 50422613185d505201167e8bdd2f2700790d5db6 (excl.)
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to a78d055ba7c31103ad02f8eceb0c452e154d2660 (excl.)
  • affected from ddb94eafab8b597b05904c8277194ea2d6357fa9 to 008e7a7c293b30bc43e4368dac6ea3808b75a572 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.13 is affected
  • unaffected from 0 to 5.13 (excl.)
  • unaffected from 5.15.202 to 5.15.* (incl.)
  • unaffected from 6.1.165 to 6.1.* (incl.)
  • unaffected from 6.6.128 to 6.6.* (incl.)
  • unaffected from 6.12.75 to 6.12.* (incl.)
  • unaffected from 6.18.14 to 6.18.* (incl.)
  • unaffected from 6.19.4 to 6.19.* (incl.)
  • unaffected from 7.0 to * (incl.)

References