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ubuntucveUbuntu.comUB:CVE-2024-26842
HistoryApr 17, 2024 - 12:00 a.m.

CVE-2024-26842

2024-04-1700:00:00
ubuntu.com
ubuntu.com
2
linux kernel
vulnerability
scsi
ufs
core
shift issue
ufshcd_clear_cmd
task_tag
out of bounds
u32 mask
bitewise shift
brk exception
traps
internal error
cpufreq
dvfs log
mrdump
kernel offset
debug monitors
arm64_notify_die
el1_dbg
ufshcd_err_handler

AI Score

6.6

Confidence

High

EPSS

0

Percentile

15.5%

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

AI Score

6.6

Confidence

High

EPSS

0

Percentile

15.5%