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🛡️ CVE-2024-26842 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

scsi: ufs: core: Fix shift issue in ufshcd_clear_cmd()

In the Linux kernel, the following vulnerability has been resolved:

scsi: ufs: core: Fix shift issue in ufshcd_clear_cmd()

When task_tag >= 32 (in MCQ mode) and sizeof(unsigned int) == 4, 1U <<

task_tag will out of bounds for a u32 mask. Fix this up to prevent

SHIFT_ISSUE (bitwise shifts that are out of bounds for their data type).

[name:debug_monitors&]Unexpected kernel BRK exception at EL1

[name:traps&]Internal error: BRK handler: 00000000f2005514 [#1] PREEMPT SMP

[name:mediatek_cpufreq_hw&]cpufreq stop DVFS log done

[name:mrdump&]Kernel Offset: 0x1ba5800000 from 0xffffffc008000000

[name:mrdump&]PHYS_OFFSET: 0x80000000

[name:mrdump&]pstate: 22400005 (nzCv daif +PAN -UAO)

[name:mrdump&]pc : [0xffffffdbaf52bb2c] ufshcd_clear_cmd+0x280/0x288

[name:mrdump&]lr : [0xffffffdbaf52a774] ufshcd_wait_for_dev_cmd+0x3e4/0x82c

[name:mrdump&]sp : ffffffc0081471b0

<snip>

Workqueue: ufs_eh_wq_0 ufshcd_err_handler

Call trace:

dump_backtrace+0xf8/0x144

show_stack+0x18/0x24

dump_stack_lvl+0x78/0x9c

dump_stack+0x18/0x44

mrdump_common_die+0x254/0x480 [mrdump]

ipanic_die+0x20/0x30 [mrdump]

notify_die+0x15c/0x204

die+0x10c/0x5f8

arm64_notify_die+0x74/0x13c

do_debug_exception+0x164/0x26c

el1_dbg+0x64/0x80

el1h_64_sync_handler+0x3c/0x90

el1h_64_sync+0x68/0x6c

ufshcd_clear_cmd+0x280/0x288

ufshcd_wait_for_dev_cmd+0x3e4/0x82c

ufshcd_exec_dev_cmd+0x5bc/0x9ac

ufshcd_verify_dev_init+0x84/0x1c8

ufshcd_probe_hba+0x724/0x1ce0

ufshcd_host_reset_and_restore+0x260/0x574

ufshcd_reset_and_restore+0x138/0xbd0

ufshcd_err_handler+0x1218/0x2f28

process_one_work+0x5fc/0x1140

worker_thread+0x7d8/0xe20

kthread+0x25c/0x468

ret_from_fork+0x10/0x20

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2024-26842 is recorded against 2 packages.

  • kernel (from 6.7.0 up to 6.7.7)
  • linux-kernel

Timeline and source

Published on 17 April 2024 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2024-26842 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2024-04-17
Updated 2026-08-20
Modified 2026-08-12

Affected Packages

Software From version Fixed in
kernel 6.7.0 6.7.7
linux-kernel — —

Similar Threats

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