CVE-2024-35827
Linux Kernel Integer Underflow in io_uring
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/net: fix overflow check in io_recvmsg_mshot_prep() The "controllen" variable is type size_t (unsigned long). Casting it to int could lead to an integer underflow. The check_add_overflow() function considers the type of the destination which is type int. If we add two positive values and the result cannot fit in an integer then that's counted as an overflow. However, if we cast "controllen" to an int and it turns negative, then negative values *can* fit into an int type so there is no overflow. Good: 100 + (unsigned long)-4 = 96 <-- overflow Bad: 100 + (int)-4 = 96 <-- no overflow I deleted the cast of the sizeof() as well. That's not a bug but the cast is unnecessary.
INFO
Published Date :
May 17, 2024, 2:15 p.m.
Last Modified :
Feb. 3, 2025, 4:20 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-2024-35827.
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-2024-35827 vulnerability anywhere in the article.
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tripwire.com
VERT Threat Alert: February 2025 Patch Tuesday Analysis
Today’s VERT Alert addresses Microsoft’s February 2025 Security Updates. VERT is actively working on coverage for these vulnerabilities and expects to ship ASPL-1143 as soon as coverage is completed.I ... Read more
The following table lists the changes that have been made to the
CVE-2024-35827 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]
Feb. 03, 2025
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 Added CWE NIST CWE-190 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.1.83 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.23 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.8 up to (excluding) 6.8.2 Changed Reference Type https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e No Types Assigned https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e Patch Changed Reference Type https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e No Types Assigned https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e Patch Changed Reference Type https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66 No Types Assigned https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66 Patch Changed Reference Type https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66 No Types Assigned https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66 Patch Changed Reference Type https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c No Types Assigned https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c Patch Changed Reference Type https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c No Types Assigned https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c Patch Changed Reference Type https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4 No Types Assigned https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4 Patch Changed Reference Type https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4 No Types Assigned https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4 Patch Changed Reference Type https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe No Types Assigned https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe Patch Changed Reference Type https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe No Types Assigned https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e Added Reference https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66 Added Reference https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c Added Reference https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4 Added Reference https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 17, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: io_uring/net: fix overflow check in io_recvmsg_mshot_prep() The "controllen" variable is type size_t (unsigned long). Casting it to int could lead to an integer underflow. The check_add_overflow() function considers the type of the destination which is type int. If we add two positive values and the result cannot fit in an integer then that's counted as an overflow. However, if we cast "controllen" to an int and it turns negative, then negative values *can* fit into an int type so there is no overflow. Good: 100 + (unsigned long)-4 = 96 <-- overflow Bad: 100 + (int)-4 = 96 <-- no overflow I deleted the cast of the sizeof() as well. That's not a bug but the cast is unnecessary. Added Reference kernel.org https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4 [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-2024-35827 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-2024-35827
weaknesses.