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CVE PROGRAM SOURCE RECORD5.5 Medium

CVE-2024-57946

virtio-blk: don't keep queue frozen during system suspend

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: virtio-blk: don't keep queue frozen during system suspend Commit 4ce6e2db00de ("virtio-blk: Ensure no requests in virtqueues before deleting vqs.") replaces queue quiesce with queue freeze in virtio-blk's PM callbacks. And the motivation is to drain inflight IOs before suspending. block layer's queue freeze looks very handy, but it is also easy to cause deadlock, such as, any attempt to call into bio_queue_enter() may run into deadlock if the queue is frozen in current context. There are all kinds of ->suspend() called in suspend context, so keeping queue frozen in the whole suspend context isn't one good idea. And Marek reported lockdep warning[1] caused by virtio-blk's freeze queue in virtblk_freeze(). [1] https://lore.kernel.org/linux-block/ca16370e-d646-4eee-b9cc-87277c89c43c@samsung.com/ Given the motivation is to drain in-flight IOs, it can be done by calling freeze & unfreeze, meantime restore to previous behavior by keeping queue quiesced during suspend.

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

  • b7bfaea8f5ecd290864f5ae4c69859b89832b4dc to < d738f3215bb4f88911ff4579780a44960c8e0ca5affected
  • 5fe446b245ba61ddc924d7db280bcd987c39357a to < 9ca428c6397abaa8c38f5c69133a2299e1efbbf2affected
  • 2a52590ac52394540351d8289cc2af0b83cf7d31 to < 6dea8e3de59928974bf157dd0499d3958d744ae4affected
  • db48acce75d73dfe51c43d56893cce067b73cf08 to < 9e323f856cf4963120e0e3892a84ef8bd764a0e4affected
  • 8946924ff324853df6b7c525a7467d964dfd11c3 to < 12c0ddd6c551c1e438b087f874b4f1223a75f7eaaffected
  • 4ce6e2db00de8103a0687fb0f65fd17124a51aaa to < 92d5139b91147ab372a17daf5dc27a5b9278e516affected
  • 4ce6e2db00de8103a0687fb0f65fd17124a51aaa to < 7678abee0867e6b7fb89aa40f6e9f575f755fb37affected
  • 2b5128c714d863cd8d259aa9d87bed2d6aa6a5a8affected
  • c67ed40b1b4a66e3a13b21bdfbd0151639da5240affected
  • 5.4.270 to < 5.4.289affected
  • 5.10.211 to < 5.10.233affected
  • 5.15.150 to < 5.15.176affected
  • 6.1.80 to < 6.1.123affected
  • 6.6.19 to < 6.6.69affected
  • 4.19.308 to < 4.20affected
  • 6.7.7 to < 6.8affected

Linux Linux

Default version status: affected

  • 6.8affected
  • 0 to < 6.8unaffected
  • 5.4.289 to ≤ 5.4.*unaffected
  • 5.10.233 to ≤ 5.10.*unaffected
  • 5.15.176 to ≤ 5.15.*unaffected
  • 6.1.123 to ≤ 6.1.*unaffected
  • 6.6.69 to ≤ 6.6.*unaffected
  • 6.12.8 to ≤ 6.12.*unaffected
  • 6.13 to ≤ *unaffected

References