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CVE-2024-39482 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: bcache: fix variable length array abuse in btree_iter btree_iter is used in two ways: either allocated on the stack with a fixed size MAX_BSETS, or from a mempool with a dynamic size based on the specific cache set. Previously, the struct had a fixed-length array of size MAX_BSETS which was indexed out-of-bounds for the dynamically-sized iterators, which causes UBSAN to complain. This patch uses the same approach as in bcachefs's sort_iter and splits the iterator into a btree_iter with a flexible array member and a btree_iter_stack which embeds a btree_iter as well as a fixed-length data array.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
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URL Source(s) Tag(s)
siemens-SADP
siemens-SADP
siemens-SADP
CVE, kernel.org Mailing List  Patch 
CVE, kernel.org Mailing List  Patch 
CVE, kernel.org Mailing List  Patch 
CVE, kernel.org Mailing List  Patch 
CVE, kernel.org Mailing List  Patch 
CVE, kernel.org Mailing List  Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-770 Allocation of Resources Without Limits or Throttling cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-39482
NVD Published Date:
07/05/2024
NVD Last Modified:
05/12/2026
Source:
kernel.org