CVE-2023-53473

HIGH EPSS 4.9%
Published Oct 1, 20259mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: improve error handling from ext4_dirhash() The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today. So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.

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
4.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.2  –  <5.15.112
linuxlinux_kernel*≥5.16  –  <6.1.29
linuxlinux_kernel*≥6.2  –  <6.2.16
linuxlinux_kernel*≥6.3  –  <6.3.3
linuxlinux_kernel6.4any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424
    Patch