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CVE-2022-49217

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.3%
Linux•Linux•Versions : 5.15.33, <=5.17.*, 5.18, <1824a21b2cedc5774a5adfa74f5f7b90472d8677, <9914461db82caee6c519acfbe10a86fe11bcdeca, <326d894adf89f3c707b7784becbe241830daaab6, 0, c6b9ef5779c3e1edfa9de949d2a51252bc347663, <7f12845c8389855dbcc67baa068b6832dc4a396e, <=4.9.*, <3.10, <=5.10.*, 4.9.311, <c8db786858d895ac58342f67767b4999ae6538fa, <=4.14.*, <16cd02e0951b520bef324adb9a35afcc92501caf, <279f318bd7d6e04e6e0bc7b8cd8e190da8fa37a4, 5.4.189, <=5.4.*, <=4.19.*, <765674e3b30121782a2b792684554baa48c61f5e, 5.16.19, <=5.16.*, 5.10.110, 4.14.276, 5.17.2, <=*, 4.19.238, <=5.15.*, 3.10, <d6ec4471550cc53e96485a7124c5891e6a38d1c3

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Fix abort all task initialization In pm80xx_send_abort_all(), the n_elem field of the ccb used is not initialized to 0. This missing initialization sometimes lead to the task completion path seeing the ccb with a non-zero n_elem resulting in the execution of invalid dma_unmap_sg() calls in pm8001_ccb_task_free(), causing a crash such as: [ 197.676341] RIP: 0010:iommu_dma_unmap_sg+0x6d/0x280 [ 197.700204] RSP: 0018:ffff889bbcf89c88 EFLAGS: 00010012 [ 197.705485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83d0bda0 [ 197.712687] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88810dffc0d0 [ 197.719887] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8881c790098b [ 197.727089] R10: ffffed1038f20131 R11: 0000000000000001 R12: 0000000000000000 [ 197.734296] R13: ffff88810dffc0d0 R14: 0000000000000010 R15: 0000000000000000 [ 197.741493] FS: 0000000000000000(0000) GS:ffff889bbcf80000(0000) knlGS:0000000000000000 [ 197.749659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 197.755459] CR2: 00007f16c1b42734 CR3: 0000000004814000 CR4: 0000000000350ee0 [ 197.762656] Call Trace: [ 197.765127] <IRQ> [ 197.767162] pm8001_ccb_task_free+0x5f1/0x820 [pm80xx] [ 197.772364] ? do_raw_spin_unlock+0x54/0x220 [ 197.776680] pm8001_mpi_task_abort_resp+0x2ce/0x4f0 [pm80xx] [ 197.782406] process_oq+0xe85/0x7890 [pm80xx] [ 197.786817] ? lock_acquire+0x194/0x490 [ 197.790697] ? handle_irq_event+0x10e/0x1b0 [ 197.794920] ? mpi_sata_completion+0x2d70/0x2d70 [pm80xx] [ 197.800378] ? __wake_up_bit+0x100/0x100 [ 197.804340] ? lock_is_held_type+0x98/0x110 [ 197.808565] pm80xx_chip_isr+0x94/0x130 [pm80xx] [ 197.813243] tasklet_action_common.constprop.0+0x24b/0x2f0 [ 197.818785] __do_softirq+0x1b5/0x82d [ 197.822485] ? do_raw_spin_unlock+0x54/0x220 [ 197.826799] __irq_exit_rcu+0x17e/0x1e0 [ 197.830678] irq_exit_rcu+0xa/0x20 [ 197.834114] common_interrupt+0x78/0x90 [ 197.840051] </IRQ> [ 197.844236] <TASK> [ 197.848397] asm_common_interrupt+0x1e/0x40 Avoid this issue by always initializing the ccb n_elem field to 0 in pm8001_send_abort_all(), pm8001_send_read_log() and pm80xx_send_abort_all().

Gravité et risque d'exploitation

CVE-2022-49217 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.30 %, ce qui la place devant 21.9 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions 5.15.33, <=5.17.*, 5.18, <1824a21b2cedc5774a5adfa74f5f7b90472d8677, <9914461db82caee6c519acfbe10a86fe11bcdeca, <326d894adf89f3c707b7784becbe241830daaab6, 0, c6b9ef5779c3e1edfa9de949d2a51252bc347663, <7f12845c8389855dbcc67baa068b6832dc4a396e, <=4.9.*, <3.10, <=5.10.*, 4.9.311, <c8db786858d895ac58342f67767b4999ae6538fa, <=4.14.*, <16cd02e0951b520bef324adb9a35afcc92501caf, <279f318bd7d6e04e6e0bc7b8cd8e190da8fa37a4, 5.4.189, <=5.4.*, <=4.19.*, <765674e3b30121782a2b792684554baa48c61f5e, 5.16.19, <=5.16.*, 5.10.110, 4.14.276, 5.17.2, <=*, 4.19.238, <=5.15.*, 3.10, <d6ec4471550cc53e96485a7124c5891e6a38d1c3) 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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