Linux Kernel up to 6.18.13/6.19.3 amdxdna amdxdna_ubuf_map memory leak

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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.18.13/6.19.3. This affects the function amdxdna_ubuf_map of the component amdxdna. Executing a manipulation can lead to memory leak. This vulnerability appears as CVE-2026-45908. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.18.13/6.19.3 and classified as critical. This vulnerability affects the function amdxdna_ubuf_map of the component amdxdna. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix memory leak in amdxdna_ubuf_map The amdxdna_ubuf_map() function allocates memory for sg and internal sg table structures, but it fails to free them if subsequent operations (sg_alloc_table_from_pages or dma_map_sgtable) fail.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-45908 since 05/13/2026. There are known technical details, but no exploit is available.

Upgrading to version 6.18.14 or 6.19.4 eliminates this vulnerability. Applying the patch 5a68d2c99c859e6e8e36fa4e32749abf6d1fb66a/f9f4366d2ff93b07c2571561c776bd9a708078c3/84dd57fb0359500092f1101409ca32091731490d 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 vulnerability database at CERT Bund (WID-SEC-2026-1700). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel

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: Memory leak
CWE: CWE-401 / 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.14/6.19.4
Patch: 5a68d2c99c859e6e8e36fa4e32749abf6d1fb66a/f9f4366d2ff93b07c2571561c776bd9a708078c3/84dd57fb0359500092f1101409ca32091731490d

Timelineinfo

05/13/2026 CVE reserved
05/27/2026 +14 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
06/24/2026 +28 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-45908 (🔒)
GCVE (CVE): GCVE-0-2026-45908
GCVE (VulDB): GCVE-100-366088
CERT Bund: WID-SEC-2026-1700 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/27/2026 16:25
Updated: 06/24/2026 23:07
Changes: 05/27/2026 16:25 (59), 06/15/2026 06:09 (7), 06/23/2026 03:01 (1), 06/24/2026 23:07 (10)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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