Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2024-50203

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bpf, arm64: Fix address emission with tag-based KASAN enabled When BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp…

Published Nov 8, 2024CWE-787EPSS 0.23%

Overview

CVE-2024-50203 is a high-severity vulnerability. It was published on November 8, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

bpf, arm64: Fix address emission with tag-based KASAN enabled

When BPF_TRAMP_F_CALL_ORIG is enabled, the address of a bpf_tramp_image

struct on the stack is passed during the size calculation pass and

an address on the heap is passed during code generation. This may

cause a heap buffer overflow if the heap address is tagged because

emit_a64_mov_i64() will emit longer code than it did during the size

calculation pass. The same problem could occur without tag-based

KASAN if one of the 16-bit words of the stack address happened to

be all-ones during the size calculation pass. Fix the problem by

assuming the worst case (4 instructions) when calculating the size

of the bpf_tramp_image address emission.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/7db1a2121f3c7903b8e397392beec563c3d00950Refgit.kernel.org/stable/c/9e80f366ebfdfafc685fe83a84c34f7ef01cbe88Refgit.kernel.org/stable/c/a552e2ef5fd1a6c78267cd4ec5a9b49aa11bbb1cRefgit.kernel.org/stable/c/f521c2a0c0c4585f36d912bf62c852b88682c4f2

How CyberStrike helps

Frequently asked questions

What is CVE-2024-50203?

CVE-2024-50203 is a high-severity vulnerability. It was published on November 8, 2024 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-50203?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-50203?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2024-50203?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-50203 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2024

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999