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CVE-2024-57946

Vulnérabilité moyenne dans Linux (Linux)

CVSS 5.5 · Moyenne
EPSS 0.2%
Linux•Linux•Versions : 6.13, <=6.1.*, <=6.12.*, 6.12.8, 0, 5.10.211, 5.10.233, 6.1.123, 8946924ff324853df6b7c525a7467d964dfd11c3, 6.8, 5fe446b245ba61ddc924d7db280bcd987c39357a, <92d5139b91147ab372a17daf5dc27a5b9278e516, 5.15.176, <6.8, 2b5128c714d863cd8d259aa9d87bed2d6aa6a5a8, <9e323f856cf4963120e0e3892a84ef8bd764a0e4, <4.20, <6.6.69, <7678abee0867e6b7fb89aa40f6e9f575f755fb37, <6dea8e3de59928974bf157dd0499d3958d744ae4, <5.4.289, <=5.10.*, 4ce6e2db00de8103a0687fb0f65fd17124a51aaa, db48acce75d73dfe51c43d56893cce067b73cf08, <=6.6.*, b7bfaea8f5ecd290864f5ae4c69859b89832b4dc, <9ca428c6397abaa8c38f5c69133a2299e1efbbf2, <=5.4.*, 2a52590ac52394540351d8289cc2af0b83cf7d31, <5.10.233, 6.7.7, <12c0ddd6c551c1e438b087f874b4f1223a75f7ea, c67ed40b1b4a66e3a13b21bdfbd0151639da5240, 6.1.80, <=*, <d738f3215bb4f88911ff4579780a44960c8e0ca5, 5.4.270, 6.6.19, <=5.15.*, <5.15.176, 5.4.289, 5.15.150, 6.6.69, <6.1.123, 4.19.308

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.

Gravité et risque d'exploitation

CVE-2024-57946 obtient un score CVSS de 5.5/10, soit une gravité moyenne. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.17 %, ce qui la place devant 5.6 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 6.13, <=6.1.*, <=6.12.*, 6.12.8, 0, 5.10.211, 5.10.233, 6.1.123, 8946924ff324853df6b7c525a7467d964dfd11c3, 6.8, 5fe446b245ba61ddc924d7db280bcd987c39357a, <92d5139b91147ab372a17daf5dc27a5b9278e516, 5.15.176, <6.8, 2b5128c714d863cd8d259aa9d87bed2d6aa6a5a8, <9e323f856cf4963120e0e3892a84ef8bd764a0e4, <4.20, <6.6.69, <7678abee0867e6b7fb89aa40f6e9f575f755fb37, <6dea8e3de59928974bf157dd0499d3958d744ae4, <5.4.289, <=5.10.*, 4ce6e2db00de8103a0687fb0f65fd17124a51aaa, db48acce75d73dfe51c43d56893cce067b73cf08, <=6.6.*, b7bfaea8f5ecd290864f5ae4c69859b89832b4dc, <9ca428c6397abaa8c38f5c69133a2299e1efbbf2, <=5.4.*, 2a52590ac52394540351d8289cc2af0b83cf7d31, <5.10.233, 6.7.7, <12c0ddd6c551c1e438b087f874b4f1223a75f7ea, c67ed40b1b4a66e3a13b21bdfbd0151639da5240, 6.1.80, <=*, <d738f3215bb4f88911ff4579780a44960c8e0ca5, 5.4.270, 6.6.19, <=5.15.*, <5.15.176, 5.4.289, 5.15.150, 6.6.69, <6.1.123, 4.19.308) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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