CVE-2023-0459

Advisory lineage Upstream: 0 Downstream: 40
Modified
Published: 25 May 2023, 13:22
Last modified:26 Sept 2024, 18:39

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.64% LOW
1% probability +0.62%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

25 May 2023, 13:22
Published
Vulnerability first disclosed
26 Sept 2024, 18:39
Last Modified
Vulnerability information updated

Description

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.64%• Percentile: 46%

Techniques & Countermeasures

  • CWE-763•Release of Invalid Pointer or Reference

    The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function incorrectly.

Affected Systems

  • linux•linux kernel

    ≥ 4b842e4e25b12951fa10dedb4bc16bc47e3b850c, ≤ 74e19ef0ff8061ef55957c3abd71614ef0f42f47 | < 4.14.307 | ≥ 4.19.0, < 4.19.274 | ≥ 5.4.0, < 5.4.233 | ≥ 5.10.0, < 5.10.170 | ≥ 5.15.0, < 5.15.96 | ≥ 6.1.0, < 6.1.14 | ≥ 6.2.0, < 6.2.1

References (2)