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CVE-2024-26901

5.5 · MEDIUM
Published Apr 17, 2024 linux CWE-908 EPSS 0.83% (55th pctl)

Overview

CVE-2024-26901 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak

syzbot identified a kernel information leak vulnerability in

do_sys_name_to_handle() and issued the following report [1].

[1]

"BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]

BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40

instrument_copy_to_user include/linux/instrumented.h:114 [inline]

_copy_to_user+0xbc/0x100 lib/usercopy.c:40

copy_to_user include/linux/uaccess.h:191 [inline]

do_sys_name_to_handle fs/fhandle.c:73 [inline]

__do_sys_name_to_handle_at fs/fhandle.c:112 [inline]

__se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94

__x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94

...

Uninit was created at:

slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768

slab_alloc_node mm/slub.c:3478 [inline]

__kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517

__do_kmalloc_node mm/s

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 2.6.39, < 4.19.311 Affected

References

Ref git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43 Ref git.kernel.org/stable/c/423b6bdf19bbc5e1f7e7461045099917378f7e71 Ref git.kernel.org/stable/c/4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1 Ref git.kernel.org/stable/c/772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b Ref git.kernel.org/stable/c/bf9ec1b24ab4e94345aa1c60811dd329f069c38b Ref git.kernel.org/stable/c/c1362eae861db28b1608b9dc23e49634fe87b63b Ref git.kernel.org/stable/c/cba138f1ef37ec6f961baeab62f312dedc7cf730 Ref git.kernel.org/stable/c/cde76b3af247f615447bcfecf610bb76c3529126 Ref git.kernel.org/stable/c/e6450d5e46a737a008b4885aa223486113bf0ad6 Ref git.kernel.org/stable/c/3948abaa4e2be938ccdfc289385a27342fb13d43

Frequently Asked Questions

What is CVE-2024-26901?

CVE-2024-26901 is a medium-severity vulnerability affecting linux linux_kernel. It was published on April 17, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26901?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-26901?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-26901?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26901 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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