Description
In the Linux kernel, the following vulnerability has been resolved:
page_pool: avoid infinite loop to schedule delayed worker
We noticed the kworker in page_pool_release_retry() was waken up repeatedly and infinitely in production because of the buggy driver causing the inflight less than 0 and warning us in page_pool_inflight()[1].
Since the inflight value goes negative, it means we should not expect the whole page_pool to get back to work normally.
This patch mitigates the adverse effect by not rescheduling the kworker when detecting the inflight negative in page_pool_release_retry().
[1] [Mon Feb 10 20:36:11 2025] ------------[ cut here ]------------ [Mon Feb 10 20:36:11 2025] Negative(-51446) inflight packet-pages ... [Mon Feb 10 20:36:11 2025] Call Trace: [Mon Feb 10 20:36:11 2025] page_pool_release_retry+0x23/0x70 [Mon Feb 10 20:36:11 2025] process_one_work+0x1b1/0x370 [Mon Feb 10 20:36:11 2025] worker_thread+0x37/0x3a0 [Mon Feb 10 20:36:11 2025] kthread+0x11a/0x140 [Mon Feb 10 20:36:11 2025] ? process_one_work+0x370/0x370 [Mon Feb 10 20:36:11 2025] ? __kthread_cancel_work+0x40/0x40 [Mon Feb 10 20:36:11 2025] ret_from_fork+0x35/0x40 [Mon Feb 10 20:36:11 2025] ---[ end trace ebffe800f33e7e34 ]--- Note: before this patch, the above calltrace would flood the dmesg due to repeated reschedule of release_dw kworker.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 05f646cb2174d1a4e032b60b99097f5c4b522616, < c3c7c57017ce1d4b2d3788c1fc59e7e39026e158; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 9f71db4fb82deb889e0bac4a51b34daea7d506a3; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 91522aba56e9fcdf64da25ffef9b27f8fad48e0f; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 90e089a64504982f8d62f223027cb9f903781f78; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 95f17738b86fd198924d874a5639bcdc49c7e5b8; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 7204335d1991c23fc615ab76f31f175748a578e1; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < e74e5aa33228c5e2cb4fc80ad103541a7b7805ec; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 738d1812ec2e395e953258aea912ddd867d11a13; >= c3f812cea0d7006469d1cf33a4a9f0a12bb4b3a3, < 43130d02baa137033c25297aaae95fd0edc41654; bf22306d92ca59c59dc4aa3bab14768948193d56; >= 5.4.5, < 5.4.293; >= 5.3.18, < 5.4 |
| Linux | Linux | 5.5 |
References
- https://git.kernel.org/stable/c/43130d02baa137033c25297aaae95fd0edc41654Patch
- https://git.kernel.org/stable/c/7204335d1991c23fc615ab76f31f175748a578e1Patch
- https://git.kernel.org/stable/c/738d1812ec2e395e953258aea912ddd867d11a13Patch
- https://git.kernel.org/stable/c/90e089a64504982f8d62f223027cb9f903781f78Patch
- https://git.kernel.org/stable/c/91522aba56e9fcdf64da25ffef9b27f8fad48e0fPatch
- https://git.kernel.org/stable/c/95f17738b86fd198924d874a5639bcdc49c7e5b8Patch
- https://git.kernel.org/stable/c/9f71db4fb82deb889e0bac4a51b34daea7d506a3Patch
- https://git.kernel.org/stable/c/c3c7c57017ce1d4b2d3788c1fc59e7e39026e158Patch
- https://git.kernel.org/stable/c/e74e5aa33228c5e2cb4fc80ad103541a7b7805ecPatch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlMailing List, Third Party Advisory
Timeline
- Published
- May 9, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Analyzed