afs: Fix netns teardown to cancel the preallocation charger

Summary

In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teardown of an afs network namespace to make sure it cancels the work item that keeps the preallocated rxrpc call/conn/peer queue charged before incoming calls are disabled (i.e. listen 0). Also, if net->live is false because the afs netns is being deleted, make afs_charge_preallocation() skip charging and make afs_rx_new_call() avoid requeuing the charger. (This was found by AI review).

Timeline

1. Aug 15, 2026, 5:59 AM UTCCVE published
2. Oct 16, 2026, 6:56 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: total

3. Oct 16, 2026, 7:05 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in 63ccaf1bdf8be2330f47f9b5b233dd3fd04acbd9; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in f5096e18b6b7fbd1c2a1942e275a51bcfdfb2ad1; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in 59e8b7652f6cbfb62d377ead0ad553c1b4e39a7a; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in 85d5fb80fe4f0cc836b6df83f26de204fe102ff7; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in a33975ff2b6ea47b8f29956403374b1cdd057539; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in b83ecf80e28afb7b6595ba79932e77ca68a5a83d; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in eec89c5f8e1adc1de4824042ef75f62aed804153; From 00e907127e6f86d0f9b122d9b4347a8aa09a8b61 · fixed in 47694fbc9d24ab6bf210f91e8efe06a10a478064

• Linux Linux

  4.9

• KernelLinux

  From 4.9.0 · fixed in 5.10.261; From 5.11.0 · fixed in 5.15.212; From 5.16.0 · fixed in 6.1.178; From 6.2.0 · fixed in 6.6.145; From 6.7.0 · fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.19.0 · fixed in 7.1.5

References 8