CVE-2024-47703
Apache Linux Kernel Use-After-Free Buffer Overflow
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.
INFO
Published Date :
Oct. 21, 2024, 12:15 p.m.
Last Modified :
Oct. 24, 2024, 1:33 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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CVE-2024-47703.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-47703 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-47703 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Oct. 24, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/1050727d83e70449991c29dd1cf29fe936a63da3 No Types Assigned https://git.kernel.org/stable/c/1050727d83e70449991c29dd1cf29fe936a63da3 Patch Changed Reference Type https://git.kernel.org/stable/c/27ca3e20fe80be85a92b10064dfeb56cb2564b1c No Types Assigned https://git.kernel.org/stable/c/27ca3e20fe80be85a92b10064dfeb56cb2564b1c Patch Changed Reference Type https://git.kernel.org/stable/c/5d99e198be279045e6ecefe220f5c52f8ce9bfd5 No Types Assigned https://git.kernel.org/stable/c/5d99e198be279045e6ecefe220f5c52f8ce9bfd5 Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 6.10.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.2 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/1050727d83e70449991c29dd1cf29fe936a63da3 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/27ca3e20fe80be85a92b10064dfeb56cb2564b1c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5d99e198be279045e6ecefe220f5c52f8ce9bfd5 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-47703 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-47703
weaknesses.