CVE-2023-54268

debugobjects: Don't wake up kswapd from fill_pool()

State: Published
Severity: Not scored
Published: Dec 30, 2025
Updated: May 11, 2026
Reserved: Dec 30, 2025

Description

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

debugobjects: Don't wake up kswapd from fill_pool()

syzbot is reporting a lockdep warning in fill_pool() because the allocation from debugobjects is using GFP_ATOMIC, which is (__GFP_HIGH | __GFP_KSWAPD_RECLAIM) and therefore tries to wake up kswapd, which acquires kswapd_wait::lock.

Since fill_pool() might be called with arbitrary locks held, fill_pool() should not assume that acquiring kswapd_wait::lock is safe.

Use __GFP_HIGH instead and remove __GFP_NORETRY as it is pointless for !__GFP_DIRECT_RECLAIM allocation.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before be646802b3dc408c4dc72a3ac32c3f4a0282414dAffected 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before fd673079749bac97bb30f1461df079e6c8e86511Affected 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before aee97eec77029270866c704f66cdf2881cbd2fe1Affected 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before d7fff52c99d52f180d8bef95d8ed8fec6343889cAffected 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before 4c088d30a72d9b8f9c6ae9362222942e4075cb00Affected 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before eb799279fb1f9c63c520fe8c1c41cb9154252db6Affected
LinuxLinux	2.6.26Affected before 2.6.26Not affected 5.4.244 through 5.4.Not affected 5.10.181 through 5.10.Not affected 5.15.114 through 5.15.Not affected 6.1.31 through 6.1.Not affected 6.3.5 through 6.3.*Not affected 6.4 and laterNot affected

Product

Versions

LinuxLinux

3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before be646802b3dc408c4dc72a3ac32c3f4a0282414dAffected
3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before fd673079749bac97bb30f1461df079e6c8e86511Affected
3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before aee97eec77029270866c704f66cdf2881cbd2fe1Affected
3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before d7fff52c99d52f180d8bef95d8ed8fec6343889cAffected
3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before 4c088d30a72d9b8f9c6ae9362222942e4075cb00Affected
3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to before eb799279fb1f9c63c520fe8c1c41cb9154252db6Affected

LinuxLinux

2.6.26Affected
before 2.6.26Not affected
5.4.244 through 5.4.*Not affected
5.10.181 through 5.10.*Not affected
5.15.114 through 5.15.*Not affected
6.1.31 through 6.1.*Not affected
6.3.5 through 6.3.*Not affected
6.4 and laterNot affected

References

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