CVE-2024-46840
Linux Btrfs Integer Underflow Handling Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: clean up our handling of refs == 0 in snapshot delete In reada we BUG_ON(refs == 0), which could be unkind since we aren't holding a lock on the extent leaf and thus could get a transient incorrect answer. In walk_down_proc we also BUG_ON(refs == 0), which could happen if we have extent tree corruption. Change that to return -EUCLEAN. In do_walk_down() we catch this case and handle it correctly, however we return -EIO, which -EUCLEAN is a more appropriate error code. Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert that to proper error handling. Also adjust the error message so we can actually do something with the information.
INFO
Published Date :
Sept. 27, 2024, 1:15 p.m.
Last Modified :
Oct. 8, 2024, 6:15 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-2024-46840.
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-2024-46840 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-46840 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. 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/03804641ec2d0da4fa088ad21c88e703d151ce16 No Types Assigned https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16 Patch Changed Reference Type https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e No Types Assigned https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e Patch Changed Reference Type https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32 No Types Assigned https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32 Patch Changed Reference Type https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9 No Types Assigned https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9 Patch Changed Reference Type https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b No Types Assigned https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b Patch Changed Reference Type https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3 No Types Assigned https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3 Patch Changed Reference Type https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c No Types Assigned https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c Patch Changed Reference Type https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d No Types Assigned https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.19.322 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.284 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.226 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.167 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.110 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.51 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.10 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 27, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: btrfs: clean up our handling of refs == 0 in snapshot delete In reada we BUG_ON(refs == 0), which could be unkind since we aren't holding a lock on the extent leaf and thus could get a transient incorrect answer. In walk_down_proc we also BUG_ON(refs == 0), which could happen if we have extent tree corruption. Change that to return -EUCLEAN. In do_walk_down() we catch this case and handle it correctly, however we return -EIO, which -EUCLEAN is a more appropriate error code. Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert that to proper error handling. Also adjust the error message so we can actually do something with the information. Added Reference kernel.org https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3 [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-2024-46840 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-2024-46840
weaknesses.