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Description

In the Linux kernel, the following vulnerability has been resolved: net: netpoll: initialize work queue before error checks Prevent a kernel warning when netconsole setup fails on devices with IFF_DISABLE_NETPOLL flag. The warning (at kernel/workqueue.c:4242 in __flush_work) occurs because the cleanup path tries to cancel an uninitialized work queue. When __netpoll_setup() encounters a device with IFF_DISABLE_NETPOLL, it fails early and calls skb_pool_flush() for cleanup. This function calls cancel_work_sync(&np->refill_wq), but refill_wq hasn't been initialized yet, triggering the warning. Move INIT_WORK() to the beginning of __netpoll_setup(), ensuring the work queue is properly initialized before any potential failure points. This allows the cleanup path to safely cancel the work queue regardless of where the setup fails.

PUBLISHED Reserved 2025-12-24 | Published 2026-01-05 | Updated 2026-01-05 | Assigner Linux

Product status

Default status
unaffected

248f6571fd4c51531f7f8f07f186f7ae98a50afc (git) before a90d0dc38a10347078cca60e7495ad0648838f18
affected

248f6571fd4c51531f7f8f07f186f7ae98a50afc (git) before 760bc6ceda8e2c273c0e2018ad2595967c3dd308
affected

248f6571fd4c51531f7f8f07f186f7ae98a50afc (git) before e5235eb6cfe02a51256013a78f7b28779a7740d5
affected

Default status
affected

6.15
affected

Any version before 6.15
unaffected

6.17.13 (semver)
unaffected

6.18.2 (semver)
unaffected

6.19-rc1 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/a90d0dc38a10347078cca60e7495ad0648838f18

git.kernel.org/...c/760bc6ceda8e2c273c0e2018ad2595967c3dd308

git.kernel.org/...c/e5235eb6cfe02a51256013a78f7b28779a7740d5

cve.org (CVE-2025-68762)

nvd.nist.gov (CVE-2025-68762)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.