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CVE-2024-47703 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: bpf, lsm: Add check for BPF LSM return value A bpf prog returning a positive number attached to file_alloc_security hook makes kernel panic. This happens because file system can not filter out the positive number returned by the LSM prog using IS_ERR, and misinterprets this positive number as a file pointer. Given that hook file_alloc_security never returned positive number before the introduction of BPF LSM, and other BPF LSM hooks may encounter similar issues, this patch adds LSM return value check in verifier, to ensure no unexpected value is returned.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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Hyperlink Resource
https://git.kernel.org/stable/c/1050727d83e70449991c29dd1cf29fe936a63da3 Patch 
https://git.kernel.org/stable/c/27ca3e20fe80be85a92b10064dfeb56cb2564b1c Patch 
https://git.kernel.org/stable/c/5d99e198be279045e6ecefe220f5c52f8ce9bfd5 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-47703
NVD Published Date:
10/21/2024
NVD Last Modified:
10/24/2024
Source:
kernel.org