5.5

CVE-2025-37859

page_pool: avoid infinite loop to schedule delayed worker

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.3.18 < 5.4
Linux ≫ Linux Kernel Version >= 5.4.5 < 5.4.293
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.237
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.181
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.135
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.88
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.24
Linux ≫ Linux Kernel Version >= 6.13 < 6.13.12
Linux ≫ Linux Kernel Version >= 6.14 < 6.14.3
Debian ≫ Debian Linux Version11.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.167
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

https://git.kernel.org/stable/c/c3c7c57017ce1d4b2d3788c1fc59e7e39026e158
Patch
https://git.kernel.org/stable/c/9f71db4fb82deb889e0bac4a51b34daea7d506a3
Patch
https://git.kernel.org/stable/c/91522aba56e9fcdf64da25ffef9b27f8fad48e0f
Patch
https://git.kernel.org/stable/c/90e089a64504982f8d62f223027cb9f903781f78
Patch
https://git.kernel.org/stable/c/95f17738b86fd198924d874a5639bcdc49c7e5b8
Patch
https://git.kernel.org/stable/c/7204335d1991c23fc615ab76f31f175748a578e1
Patch
https://git.kernel.org/stable/c/e74e5aa33228c5e2cb4fc80ad103541a7b7805ec
Patch
https://git.kernel.org/stable/c/738d1812ec2e395e953258aea912ddd867d11a13
Patch
https://git.kernel.org/stable/c/43130d02baa137033c25297aaae95fd0edc41654
Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
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