CVE-2024-26842

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

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

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

En el kernel de Linux, se resolvió la siguiente vulnerabilidad: scsi: ufs: core: solucione el problema de cambio en ufshcd_clear_cmd() Cuando task_tag >= 32 (en modo MCQ) y sizeof(unsigned int) == 4, 1U << task_tag será fuera de los límites para una máscara u32. Solucione esto para evitar SHIFT_ISSUE (desplazamientos bit a bit que están fuera de los límites de su tipo de datos). [nombre:debug_monitors&]Excepción inesperada de BRK del kernel en EL1 [nombre:traps&]Error interno: controlador BRK: 00000000f2005514 [#1] PREEMPT SMP [nombre:mediatek_cpufreq_hw&]cpufreq detiene el registro DVFS hecho [nombre:mrdump&]Kernel Offset: 0x1ba5800000 de 0xffffffc0 08000000 [nombre:mrdump&]PHYS_OFFSET: 0x80000000 [nombre:mrdump&]pstate: 22400005 (nzCv daif +PAN -UAO) [nombre:mrdump&]pc: [0xffffffdbaf52bb2c] ufshcd_clear_cmd+0x280/0x288 [nombre:mrdump&]lr: [0xffffffdbaf52 a774] ufshcd_wait_for_dev_cmd +0x3e4/0x82c [nombre:mrdump&]sp: ffffffc0081471b0 Cola de trabajo: ufs_eh_wq_0 ufshcd_err_handler Rastreo de llamadas: dump_backtrace+0xf8/0x144 show_stack+0x18/0x24 dump_stack_lvl+0x78/0x9c dump_stack+0x1 8/0x44 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 el 1h_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+0x13 8/0xbd0 ufshcd_err_handler+0x1218/0x2f28 proceso_one_work+0x5fc/0x1140 trabajador_thread+0x7d8/0xe20 kthread+0x25c/0x468 ret_from_fork+ 0x10/0x20

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-02-19 CVE Reserved
2024-04-17 CVE Published
2024-04-18 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/7ac9e18f5d66087cd22751c5c5bf0090eb0038fe	2024-03-01
https://git.kernel.org/stable/c/a992425d18e5f7c48931121993c6c69426f2a8fb	2024-03-01
https://git.kernel.org/stable/c/b513d30d59bb383a6a5d6b533afcab2cee99a8f8	2024-02-05

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.19 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.19"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.7.7 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7.7"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.8 Search vendor "Linux" for product "Linux Kernel" and version " < 6.8"		en		Affected