CVE-2021-47655

MEDIUM EPSS 13.1%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: media: venus: vdec: fixed possible memory leak issue The venus_helper_alloc_dpb_bufs() implementation allows an early return on an error path when checking the id from ida_alloc_min() which would not release the earlier buffer allocation. Move the direct kfree() from the error checking of dma_alloc_attrs() to the common fail path to ensure that allocations are released on all error paths in this function. Addresses-Coverity: 1494120 ("Resource leak")

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
13.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥5.16  –  <5.16.19
linuxlinux_kernel*≥5.17  –  <5.17.2

References 4

  • git.kernel.org https://git.kernel.org/stable/c/55bccafc246b2e64763a155ec454470c07a54a6e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5cedfe8aaf1875a5305897107b7f298db4260019
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5f89d05ba93df9c2cdfe493843f93288e55e99eb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8403fdd775858a7bf04868d43daea0acbe49ddfc
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/55bccafc246b2e64763a155ec454470c07a54a6e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5cedfe8aaf1875a5305897107b7f298db4260019
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5f89d05ba93df9c2cdfe493843f93288e55e99eb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8403fdd775858a7bf04868d43daea0acbe49ddfc
    Patch