CVE-2026-43471

scsi: ufs: core: Fix possible NULL pointer dereference in ufshcd_add_command_trace()

MEDIUM

5.5

CVSS Score

Published: May 8, 2026 at 02:22 PM UTC

Updated: June 17, 2026 at 10:49 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix possible NULL pointer dereference in ufshcd_add_command_trace() The kernel log indicates a crash in ufshcd_add_command_trace, due to a NULL pointer dereference when accessing hwq->id. This can happen if ufshcd_mcq_req_to_hwq() returns NULL. This patch adds a NULL check for hwq before accessing its id field to prevent a kernel crash. Kernel log excerpt: [<ffffffd5d192dc4c>] notify_die+0x4c/0x8c [<ffffffd5d1814e58>] __die+0x60/0xb0 [<ffffffd5d1814d64>] die+0x4c/0xe0 [<ffffffd5d181575c>] die_kernel_fault+0x74/0x88 [<ffffffd5d1864db4>] __do_kernel_fault+0x314/0x318 [<ffffffd5d2a3cdf8>] do_page_fault+0xa4/0x5f8 [<ffffffd5d2a3cd34>] do_translation_fault+0x34/0x54 [<ffffffd5d1864524>] do_mem_abort+0x50/0xa8 [<ffffffd5d2a297dc>] el1_abort+0x3c/0x64 [<ffffffd5d2a29718>] el1h_64_sync_handler+0x44/0xcc [<ffffffd5d181133c>] el1h_64_sync+0x80/0x88 [<ffffffd5d255c1dc>] ufshcd_add_command_trace+0x23c/0x320 [<ffffffd5d255bad8>] ufshcd_compl_one_cqe+0xa4/0x404 [<ffffffd5d2572968>] ufshcd_mcq_poll_cqe_lock+0xac/0x104 [<ffffffd5d11c7460>] ufs_mtk_mcq_intr+0x54/0x74 [ufs_mediatek_mod] [<ffffffd5d19ab92c>] __handle_irq_event_percpu+0xc8/0x348 [<ffffffd5d19abca8>] handle_irq_event+0x3c/0xa8 [<ffffffd5d19b1f0c>] handle_fasteoi_irq+0xf8/0x294 [<ffffffd5d19aa778>] generic_handle_domain_irq+0x54/0x80 [<ffffffd5d18102bc>] gic_handle_irq+0x1d4/0x330 [<ffffffd5d1838210>] call_on_irq_stack+0x44/0x68 [<ffffffd5d183af30>] do_interrupt_handler+0x78/0xd8 [<ffffffd5d2a29c00>] el1_interrupt+0x48/0xa8 [<ffffffd5d2a29ba8>] el1h_64_irq_handler+0x14/0x24 [<ffffffd5d18113c4>] el1h_64_irq+0x80/0x88 [<ffffffd5d2527fb4>] arch_local_irq_enable+0x4/0x1c [<ffffffd5d25282e4>] cpuidle_enter+0x34/0x54 [<ffffffd5d195a678>] do_idle+0x1dc/0x2f8 [<ffffffd5d195a7c4>] cpu_startup_entry+0x30/0x3c [<ffffffd5d18155c4>] secondary_start_kernel+0x134/0x1ac [<ffffffd5d18640bc>] __secondary_switched+0xc4/0xcc

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v ≥ 6.9.106.10 ≤ v < 6.12.786.10 ≤ v < 6.18.196.10 ≤ v < 6.19.96.10 ≤ v < 7.06.10.1 ≤ v < 6.12.786.13 ≤ v < 6.18.196.19 ≤ v < 6.19.96.6.41 ≤ v < 6.6.1306.9.10 ≤ v < 6.1011d81233f4ebe6907b12c79ad7d8787aa4db06336.10 6.6.41 6.9.10 7.0 rc19307a998cb9846a2557fdca286997430bee36a2abed0896008334eeee4b4bfd7150491ca098cbf72

Vendor states this is fixed in 0614f5618c24fbc3d555efade22887b102ad7ad6 (fixed)

Vendor states this is fixed in 30df81f2228d65bddf492db3929d9fcaffd38fc5 (fixed)

Vendor states this is fixed in 93b9e7ee9e93629db80bbc9dab8a874215b89ccf (fixed)

Vendor states this is fixed in be730f9ee92ae08f2bc4b336967bcfd8183c06fe (fixed)

Vendor states this is fixed in f4f590c6c9df7453bbda2ef9170b1b09e42a124c (fixed)

Vendor states this is fixed in 6.10 (unaffected)

Vendor states this is fixed in 6.12.78 (unaffected)

Vendor states this is fixed in 6.18.19 (unaffected)

Vendor states this is fixed in 6.19.9 (unaffected)

Vendor states this is fixed in 6.6.130 (unaffected)

Vendor states this is fixed in 7.0 (unaffected)