Linux Kernel up to 6.1.145/6.6.98/6.12.38/6.15.6 tegra dma_alloc_coherent null pointer dereference

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.1.145/6.6.98/6.12.38/6.15.6. This vulnerability affects the function dma_alloc_coherent of the component tegra. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2025-38543. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.145/6.6.98/6.12.38/6.15.6 and classified as critical. Affected by this issue is the function dma_alloc_coherent of the component tegra. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/tegra: nvdec: Fix dma_alloc_coherent error check Check for NULL return value with dma_alloc_coherent, in line with Robin's fix for vic.c in 'drm/tegra: vic: Fix DMA API misuse'.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2025-38543 since 04/16/2025. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 259987 (Linux Distros Unpatched Vulnerability : CVE-2025-38543), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.146, 6.6.99, 6.12.39 or 6.15.7 eliminates this vulnerability. Applying the patch 61b8d20962d00b7df117011c52f97cbb9c76a669/d1240029f97ac8c06db4dd4407bbbf83e8d08570/a560de522374af931fa994d161db3667b0bb2545/2e0812eedccd0629d73c9d0b1184a5db055df1da/44306a684cd1699b8562a54945ddc43e2abc9eab is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (259987), EUVD (EUVD-2025-27895) and CERT Bund (WID-SEC-2025-1858). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM
  • IBM Security Verify Access

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 259987
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-38543

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.146/6.6.99/6.12.39/6.15.7
Patch: 61b8d20962d00b7df117011c52f97cbb9c76a669/d1240029f97ac8c06db4dd4407bbbf83e8d08570/a560de522374af931fa994d161db3667b0bb2545/2e0812eedccd0629d73c9d0b1184a5db055df1da/44306a684cd1699b8562a54945ddc43e2abc9eab

Timelineinfo

04/16/2025 CVE reserved
08/16/2025 +122 days Advisory disclosed
08/16/2025 +0 days VulDB entry created
01/30/2026 +167 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38543 (🔒)
GCVE (CVE): GCVE-0-2025-38543
GCVE (VulDB): GCVE-100-320378
EUVD: 🔒
CERT Bund: WID-SEC-2025-1858 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 08/16/2025 14:36
Updated: 01/30/2026 20:20
Changes: 08/16/2025 14:36 (59), 09/01/2025 06:31 (2), 09/28/2025 10:39 (7), 10/03/2025 17:15 (1), 10/12/2025 21:00 (1), 11/01/2025 22:02 (1), 01/07/2026 20:08 (11), 01/08/2026 16:30 (1), 01/30/2026 20:20 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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