CVE-2022-49410

HIGH EPSS 19.9%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
7.8 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: tracing: Fix potential double free in create_var_ref() In create_var_ref(), init_var_ref() is called to initialize the fields of variable ref_field, which is allocated in the previous function call to create_hist_field(). Function init_var_ref() allocates the corresponding fields such as ref_field->system, but frees these fields when the function encounters an error. The caller later calls destroy_hist_field() to conduct error handling, which frees the fields and the variable itself. This results in double free of the fields which are already freed in the previous function. Fix this by storing NULL to the corresponding fields when they are freed in init_var_ref().

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
19.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-415

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥4.17  –  <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 7

  • git.kernel.org https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c27f744ceefadc7bbeb14233b6abc150ced617d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f8b383f83cb573152c577eca1ef101e89995b72a
    Patch