{"cve":"CVE-2022-49217","nvd":{"published":"2025-02-26T07:00:58.787","modified":"2026-06-17T05:17:24.970","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: pm8001: Fix abort all task initialization\n\nIn pm80xx_send_abort_all(), the n_elem field of the ccb used is not\ninitialized to 0. This missing initialization sometimes lead to the task\ncompletion path seeing the ccb with a non-zero n_elem resulting in the\nexecution of invalid dma_unmap_sg() calls in pm8001_ccb_task_free(),\ncausing a crash such as:\n\n[  197.676341] RIP: 0010:iommu_dma_unmap_sg+0x6d/0x280\n[  197.700204] RSP: 0018:ffff889bbcf89c88 EFLAGS: 00010012\n[  197.705485] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83d0bda0\n[  197.712687] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff88810dffc0d0\n[  197.719887] RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8881c790098b\n[  197.727089] R10: ffffed1038f20131 R11: 0000000000000001 R12: 0000000000000000\n[  197.734296] R13: ffff88810dffc0d0 R14: 0000000000000010 R15: 0000000000000000\n[  197.741493] FS:  0000000000000000(0000) GS:ffff889bbcf80000(0000) knlGS:0000000000000000\n[  197.749659] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  197.755459] CR2: 00007f16c1b42734 CR3: 0000000004814000 CR4: 0000000000350ee0\n[  197.762656] Call Trace:\n[  197.765127]  <IRQ>\n[  197.767162]  pm8001_ccb_task_free+0x5f1/0x820 [pm80xx]\n[  197.772364]  ? do_raw_spin_unlock+0x54/0x220\n[  197.776680]  pm8001_mpi_task_abort_resp+0x2ce/0x4f0 [pm80xx]\n[  197.782406]  process_oq+0xe85/0x7890 [pm80xx]\n[  197.786817]  ? lock_acquire+0x194/0x490\n[  197.790697]  ? handle_irq_event+0x10e/0x1b0\n[  197.794920]  ? mpi_sata_completion+0x2d70/0x2d70 [pm80xx]\n[  197.800378]  ? __wake_up_bit+0x100/0x100\n[  197.804340]  ? lock_is_held_type+0x98/0x110\n[  197.808565]  pm80xx_chip_isr+0x94/0x130 [pm80xx]\n[  197.813243]  tasklet_action_common.constprop.0+0x24b/0x2f0\n[  197.818785]  __do_softirq+0x1b5/0x82d\n[  197.822485]  ? do_raw_spin_unlock+0x54/0x220\n[  197.826799]  __irq_exit_rcu+0x17e/0x1e0\n[  197.830678]  irq_exit_rcu+0xa/0x20\n[  197.834114]  common_interrupt+0x78/0x90\n[  197.840051]  </IRQ>\n[  197.844236]  <TASK>\n[  197.848397]  asm_common_interrupt+0x1e/0x40\n\nAvoid this issue by always initializing the ccb n_elem field to 0 in\npm8001_send_abort_all(), pm8001_send_read_log() and\npm80xx_send_abort_all().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-909"],"references":["https://git.kernel.org/stable/c/16cd02e0951b520bef324adb9a35afcc92501caf","https://git.kernel.org/stable/c/1824a21b2cedc5774a5adfa74f5f7b90472d8677","https://git.kernel.org/stable/c/279f318bd7d6e04e6e0bc7b8cd8e190da8fa37a4","https://git.kernel.org/stable/c/326d894adf89f3c707b7784becbe241830daaab6","https://git.kernel.org/stable/c/765674e3b30121782a2b792684554baa48c61f5e"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49217","score":0.00305,"percentile":0.23313,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}