// For flags

CVE-2022-49395

um: Fix out-of-bounds read in LDT setup

Time Line
Published
2024-03-19
Updated
2024-03-19
Firt exploit
2024-03-19
Overview
Descriptions (1)
MITRE
CWE (0)
CAPEC (-)
Risk
CVSS Score
-
SSVC
-
KEV
-
EPSS
Affected Products (-)
Vendors (1)
linux
Products (1)
linux_kernel
Versions (9)
>= 2.6.15 < 4.9.318, >= 2.6.15 < 4.14.283, >= 2.6.15 < 4.19.247, >= 2.6.15 < 5.4.198, >= 2.6.15 < 5.10.121, >= 2.6.15 < 5.15.46, >= 2.6.15 < 5.17.14, >= 2.6.15 < 5.18.3, >= 2.6.15 < 5.19
Intel Resources (-)
Advisories (-)
-
Exploits (-)
-
Plugins (-)
-
References (10)
General (1)
kernel
Exploits & POcs (-)
Patches (9)
kernel
Advisories (-)
Summary
Descriptions

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

*Credits: N/A
CVSS Scores
Attack Vector
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Attack Complexity
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Privileges Required
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User Interaction
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Scope
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Confidentiality
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Integrity
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Availability
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* Common Vulnerability Scoring System
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* Organization's Worst-case Scenario
Timeline
  • 2025-02-26 CVE Reserved
  • 2025-02-26 CVE Published
  • 2025-02-26 CVE Updated
  • ---------- EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
Threat Intelligence Resources (0)
Security Advisory details:

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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"
 >= 2.6.15 < 4.9.318
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 4.9.318"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 4.14.283
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 4.14.283"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 4.19.247
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 4.19.247"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 5.4.198
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 5.4.198"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 5.10.121
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 5.10.121"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 5.15.46
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 5.15.46"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 5.17.14
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 5.17.14"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 5.18.3
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 5.18.3"
en
Affected
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 >= 2.6.15 < 5.19
Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.15 < 5.19"
en
Affected