0.0
NA
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 :

Sept. 30, 2024, 12:45 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

Exploitability Score :

Affected Products

The following products are affected by CVE-2024-46840 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
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.

URL Resource
https://git.kernel.org/stable/c/03804641ec2d0da4fa088ad21c88e703d151ce16
https://git.kernel.org/stable/c/71291aa7246645ef622621934d2067400380645e
https://git.kernel.org/stable/c/728d4d045b628e006b48a448f3326a7194c88d32
https://git.kernel.org/stable/c/7d1df13bf078ffebfedd361d714ff6cee1ff01b9
https://git.kernel.org/stable/c/9cc887ac24b7a0598f4042ae9af6b9a33072f75b
https://git.kernel.org/stable/c/b8ccef048354074a548f108e51d0557d6adfd3a3
https://git.kernel.org/stable/c/c60676b81fab456b672796830f6d8057058f029c
https://git.kernel.org/stable/c/c847b28a799733b04574060ab9d00f215970627d

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-2024-46840 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.

  • 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]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
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.

NONE - Vulnerability Scoring System
: