CVE-2022-49395

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49395
In the Linux kernel, the following vulnerability has been resolved: um: Fix out-of-bounds read in LDT setup syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes. ================================================================== BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6 Patch
https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e Patch
https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568 Patch
https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f Patch
https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b Patch
https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5 Patch
https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0 Patch
https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 Patch
https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

17 Apr 2025, 20:48

Type Values Removed Values Added
First Time Linux linux Kernel
Linux
CWE CWE-125
References () https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6 - () https://git.kernel.org/stable/c/10995a382271254bd276627ec74136da4a23c4a6 - Patch
References () https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e - () https://git.kernel.org/stable/c/24ca648bf5f72ed8878cf09b5d4431935779681e - Patch
References () https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568 - () https://git.kernel.org/stable/c/2a4a62a14be1947fa945c5c11ebf67326381a568 - Patch
References () https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f - () https://git.kernel.org/stable/c/3549ab4b962cf619e8c55484a0d870a34b3f845f - Patch
References () https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b - () https://git.kernel.org/stable/c/668ca34a428d6ffc0f99a1a6a9b661a288d4183b - Patch
References () https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5 - () https://git.kernel.org/stable/c/91e5ba2af2d729d5126aefd5aa3eadc69b8426e5 - Patch
References () https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0 - () https://git.kernel.org/stable/c/9caad70819aef3431abaf73ba5163b55b161aba0 - Patch
References () https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 - () https://git.kernel.org/stable/c/cf0dabc37446c5ee538ae7b4c467ab0e53fa5463 - Patch
References () https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910 - () https://git.kernel.org/stable/c/ef1dc929a1e5fa1b2d842256db9fb8710d3be910 - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: um: Se corrige la lectura fuera de los límites en la configuración de LDT syscall_stub_data() espera que el parámetro data_count sea el número de longs, no bytes. ===================================================================== ERROR: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1 CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0 The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960 This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-04-17 20:48

NVD link : CVE-2022-49395

Mitre link : CVE-2022-49395

CVE.ORG link : CVE-2022-49395

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read