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CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-54268

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to < be646802b3dc408c4dc72a3ac32c3f4a0282414daffected
  • 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to < fd673079749bac97bb30f1461df079e6c8e86511affected
  • 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to < aee97eec77029270866c704f66cdf2881cbd2fe1affected
  • 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to < d7fff52c99d52f180d8bef95d8ed8fec6343889caffected
  • 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to < 4c088d30a72d9b8f9c6ae9362222942e4075cb00affected
  • 3ac7fe5a4aab409bd5674d0b070bce97f9d20872 to < eb799279fb1f9c63c520fe8c1c41cb9154252db6affected

Linux Linux

Default version status: affected

  • 2.6.26affected
  • 0 to < 2.6.26unaffected
  • 5.4.244 to ≤ 5.4.*unaffected
  • 5.10.181 to ≤ 5.10.*unaffected
  • 5.15.114 to ≤ 5.15.*unaffected
  • 6.1.31 to ≤ 6.1.*unaffected
  • 6.3.5 to ≤ 6.3.*unaffected
  • 6.4 to ≤ *unaffected

References