CVE-2023-54268 (GCVE-0-2023-54268)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2025-12-30 12:15
VLAI?
Title
debugobjects: Don't wake up kswapd from fill_pool()
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 , < be646802b3dc408c4dc72a3ac32c3f4a0282414d (git)
Affected: 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 , < fd673079749bac97bb30f1461df079e6c8e86511 (git)
Affected: 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 , < aee97eec77029270866c704f66cdf2881cbd2fe1 (git)
Affected: 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 , < d7fff52c99d52f180d8bef95d8ed8fec6343889c (git)
Affected: 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 , < 4c088d30a72d9b8f9c6ae9362222942e4075cb00 (git)
Affected: 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 , < eb799279fb1f9c63c520fe8c1c41cb9154252db6 (git)
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    Linux Linux Affected: 2.6.26
Unaffected: 0 , < 2.6.26 (semver)
Unaffected: 5.4.244 , ≤ 5.4.* (semver)
Unaffected: 5.10.181 , ≤ 5.10.* (semver)
Unaffected: 5.15.114 , ≤ 5.15.* (semver)
Unaffected: 6.1.31 , ≤ 6.1.* (semver)
Unaffected: 6.3.5 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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