CVE-2022-49395

HIGH EPSS 17.1%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

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' ==================================================================

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
17.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥2.6.15  –  <4.9.318
linuxlinux_kernel*≥4.10  –  <4.14.283
linuxlinux_kernel*≥4.15  –  <4.19.247
linuxlinux_kernel*≥4.20  –  <5.4.198
linuxlinux_kernel*≥5.5  –  <5.10.121
linuxlinux_kernel*≥5.11  –  <5.15.46
linuxlinux_kernel*≥5.16  –  <5.17.14
linuxlinux_kernel*≥5.18  –  <5.18.3

References 9

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

Remediation

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