CVE-2023-53181

MEDIUM EPSS 4.0%
Published Sep 15, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 15, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: dma-buf/dma-resv: Stop leaking on krealloc() failure Currently dma_resv_get_fences() will leak the previously allocated array if the fence iteration got restarted and the krealloc_array() fails. Free the old array by hand, and make sure we still clear the returned *fences so the caller won't end up accessing freed memory. Some (but not all) of the callers of dma_resv_get_fences() seem to still trawl through the array even when dma_resv_get_fences() failed. And let's zero out *num_fences as well for good measure.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥5.16  –  <6.1.42
linuxlinux_kernel*≥6.2  –  <6.4.7
linuxlinux_kernel6.5any
linuxlinux_kernel6.5any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/05abb3be91d8788328231ee02973ab3d47f5e3d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/19e7b9f1f7e1cb92a4cc53b4c064f7fb4b1f1983
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/819656cc03dec7f7f7800274dfbc8eb49f888e9f
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/05abb3be91d8788328231ee02973ab3d47f5e3d2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/19e7b9f1f7e1cb92a4cc53b4c064f7fb4b1f1983
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/819656cc03dec7f7f7800274dfbc8eb49f888e9f
    Patch