CVE-2024-39482
Linux Kernel: Bcache Variable Length Array Over-Indexing Vulnerability
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.
INFO
Published Date :
July 5, 2024, 7:15 a.m.
Last Modified :
July 8, 2024, 6 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
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-39482.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671 | Mailing List Patch |
| https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b | Mailing List Patch |
| https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 | Mailing List Patch |
| https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023 | Mailing List Patch |
| https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148 | Mailing List Patch |
| https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02 | Mailing List Patch |
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-39482 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-39482 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]
Jul. 08, 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/0c31344e22dd8d6b1394c6e4c41d639015bdc671 No Types Assigned https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671 Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b No Types Assigned https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 No Types Assigned https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023 No Types Assigned https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023 Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148 No Types Assigned https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148 Mailing List, Patch Changed Reference Type https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02 No Types Assigned https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02 Mailing List, Patch Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.221 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15 up to (excluding) 5.15.162 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1 up to (excluding) 6.1.94 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6 up to (excluding) 6.6.34 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.9.5 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 05, 2024
Action Type Old Value New Value Added Reference kernel.org https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023 [No types assigned] -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 05, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 [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-2024-39482 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-2024-39482
weaknesses.