Use-after-free vulnerability in mm, slub package
Summary
GSD-2021-1001869: mm, slub: fix potential use-after-free in slab_debugfs_fops. Affects Kernel versions >= 64dd68497be76ab4e237cca06f5324e220d0f050, < 159d8cfbd0428d487c53be4722f33cdab0d25d83. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The mm, slub package is a component of the Linux Kernel, which is responsible for managing memory allocation and deallocation. It utilizes the SLUB (the unqueued slab allocator) subsystem to efficiently allocate and free memory objects. The SLUB subsystem provides debugging functionality through the slab_debugfs_fops file operations. This vulnerability affects versions of the Linux Kernel starting from v5.14 to v5.14.14.
Vulnerability Detail
The vulnerability identified in the mm, slub package is a potential use-after-free issue in the slab_debugfs_fops file operations. This vulnerability can be exploited by an attacker to manipulate freed memory objects, leading to various security risks such as information disclosure, privilege escalation, or denial of service. The vulnerability was introduced in version v5.14 of the Linux Kernel and has been fixed in version v5.14.15 by commit 159d8cfbd0428d487c53be4722f33cdab0d25d83.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
The use-after-free vulnerability in the mm, slub package of the Linux Kernel can pose significant security risks. It is crucial to update the Linux Kernel to version v5.14.15 or later to mitigate this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
This vulnerability can potentially be exploited by an attacker to manipulate freed memory objects, leading to various security risks such as information disclosure, privilege escalation, or denial of service.
Versions of the Linux Kernel starting from v5.14 to v5.14.14 are affected by this vulnerability.
Yes, this vulnerability has been fixed in version v5.14.15 of the Linux Kernel.
To update the Linux Kernel, obtain the latest version from the official Linux Kernel repository and follow the installation instructions provided.
Yes, it is important to regularly update the Linux Kernel to ensure the latest security patches are applied.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
