Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: udmabuf: fix memory leak on last export_udmabuf() error path In…
A memory leak vulnerability was identified and fixed in the Linux kernel's udmabuf driver. The issue occurs in the export_udmabuf() function when dma_buf_fd() fails due to a full file descriptor table, leaving a dma_buf object in memory with a dangling pointer. This vulnerability does not affect confidentiality or integrity but causes a resource leak. The fix involves restructuring the error handling to properly release the dma_buf resource. The vulnerability affects multiple specific versions of the linux-hwe-edge kernel prior to 6.11.0-1007.7 and 6.11.0-1017.17, among others.
AI Analysis
Technical Summary
The Linux kernel's udmabuf driver had a memory leak vulnerability in the export_udmabuf() error path. When dma_buf_fd() fails because the file descriptor table is full, a dma_buf owning the udmabuf is created but not properly released, resulting in a memory leak. The fix moves the dma_buf_fd() call out of export_udmabuf() to allow distinct error handling and proper cleanup. This issue has existed since the introduction of udmabuf and was resolved in kernel versions 6.11.0-1007.7 and 6.11.0-1017.17 and others.
Potential Impact
The vulnerability causes a memory leak in the kernel's udmabuf driver, which can lead to resource exhaustion over time. There is no impact on confidentiality or integrity, and no known exploits in the wild. The impact is limited to availability degradation due to memory consumption.
Mitigation Recommendations
A fix is available in linux-hwe-edge kernel versions 6.11.0-1007.7, 6.11.0-1017.17, and later. Users should update to these or newer patched kernel versions to remediate the memory leak. No additional mitigation is required as the issue is resolved by the official fix.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: udmabuf: fix memory leak on last export_udmabuf() error path In…
Description
A memory leak vulnerability was identified and fixed in the Linux kernel's udmabuf driver. The issue occurs in the export_udmabuf() function when dma_buf_fd() fails due to a full file descriptor table, leaving a dma_buf object in memory with a dangling pointer. This vulnerability does not affect confidentiality or integrity but causes a resource leak. The fix involves restructuring the error handling to properly release the dma_buf resource. The vulnerability affects multiple specific versions of the linux-hwe-edge kernel prior to 6.11.0-1007.7 and 6.11.0-1017.17, among others.
CVSS v3.1
Score 3.3low
Affected software
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protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.2?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.2.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email protected]~22.04.1?arch=source&distro=jammypkg:deb/ubuntu/[email 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protected]+fips1?arch=source&distro=fips-updates/jammypkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/jammypkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/jammypkg:deb/ubuntu/[email protected]~22.04.2?arch=source&distro=realtime/jammypkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]~24.04.1?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=bluefield/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]+fips2?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]+fips1?arch=source&distro=fips-updates/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/noblepkg:deb/ubuntu/[email protected]?arch=source&distro=realtime/nobleRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's udmabuf driver had a memory leak vulnerability in the export_udmabuf() error path. When dma_buf_fd() fails because the file descriptor table is full, a dma_buf owning the udmabuf is created but not properly released, resulting in a memory leak. The fix moves the dma_buf_fd() call out of export_udmabuf() to allow distinct error handling and proper cleanup. This issue has existed since the introduction of udmabuf and was resolved in kernel versions 6.11.0-1007.7 and 6.11.0-1017.17 and others.
Potential Impact
The vulnerability causes a memory leak in the kernel's udmabuf driver, which can lead to resource exhaustion over time. There is no impact on confidentiality or integrity, and no known exploits in the wild. The impact is limited to availability degradation due to memory consumption.
Mitigation Recommendations
A fix is available in linux-hwe-edge kernel versions 6.11.0-1007.7, 6.11.0-1017.17, and later. Users should update to these or newer patched kernel versions to remediate the memory leak. No additional mitigation is required as the issue is resolved by the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2024-56712
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:20.04:LTS","Ubuntu:Pro:FIPS-updates:20.04:LTS","Ubuntu:Pro:FIPS:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:Nvidia-BlueField:22.04:LTS","Ubuntu:Pro:FIPS-preview:22.04:LTS","Ubuntu:Pro:FIPS-updates:22.04:LTS","Ubuntu:Pro:Realtime:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:Nvidia-BlueField:24.04:LTS","Ubuntu:Pro:FIPS-updates:24.04:LTS","Ubuntu:Pro:Realtime:24.04:LTS"]
- Cvss Version
- 3.1
Threat ID: 6a5fd16d1010f89cc21cbcfa
Added to database: 07/21/2026, 20:07:09 UTC
Last enriched: 07/23/2026, 11:39:41 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 23
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