CVE-2024-42072
Linux Kernel BPF May-Goto Offsets Infinite Loop Denial of Service
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix may_goto with negative offset. Zac's syzbot crafted a bpf prog that exposed two bugs in may_goto. The 1st bug is the way may_goto is patched. When offset is negative it should be patched differently. The 2nd bug is in the verifier: when current state may_goto_depth is equal to visited state may_goto_depth it means there is an actual infinite loop. It's not correct to prune exploration of the program at this point. Note, that this check doesn't limit the program to only one may_goto insn, since 2nd and any further may_goto will increment may_goto_depth only in the queued state pushed for future exploration. The current state will have may_goto_depth == 0 regardless of number of may_goto insns and the verifier has to explore the program until bpf_exit.
INFO
Published Date :
July 29, 2024, 4:15 p.m.
Last Modified :
May 1, 2025, 3:22 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
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-2024-42072.
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-2024-42072 vulnerability anywhere in the article.
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tripwire.com
VERT Threat Alert: August 2024 Patch Tuesday Analysis
Today’s VERT Alert addresses Microsoft’s August 2024 Security Updates. VERT is actively working on coverage for these vulnerabilities and expects to ship ASPL-1119 as soon as coverage is completed.CVE ... Read more
The following table lists the changes that have been made to the
CVE-2024-42072 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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Modified Analysis by [email protected]
May. 01, 2025
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9.1 up to (excluding) 6.9.8 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.9 OR *cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.9.8 -
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/175827e04f4be53f3dfb57edf12d0d49b18fd939 Added Reference https://git.kernel.org/stable/c/2b2efe1937ca9f8815884bd4dcd5b32733025103 -
Initial Analysis by [email protected]
Jul. 30, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/175827e04f4be53f3dfb57edf12d0d49b18fd939 No Types Assigned https://git.kernel.org/stable/c/175827e04f4be53f3dfb57edf12d0d49b18fd939 Patch Changed Reference Type https://git.kernel.org/stable/c/2b2efe1937ca9f8815884bd4dcd5b32733025103 No Types Assigned https://git.kernel.org/stable/c/2b2efe1937ca9f8815884bd4dcd5b32733025103 Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.9 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9.1 up to (excluding) 6.9.8 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 29, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Fix may_goto with negative offset. Zac's syzbot crafted a bpf prog that exposed two bugs in may_goto. The 1st bug is the way may_goto is patched. When offset is negative it should be patched differently. The 2nd bug is in the verifier: when current state may_goto_depth is equal to visited state may_goto_depth it means there is an actual infinite loop. It's not correct to prune exploration of the program at this point. Note, that this check doesn't limit the program to only one may_goto insn, since 2nd and any further may_goto will increment may_goto_depth only in the queued state pushed for future exploration. The current state will have may_goto_depth == 0 regardless of number of may_goto insns and the verifier has to explore the program until bpf_exit. Added Reference kernel.org https://git.kernel.org/stable/c/175827e04f4be53f3dfb57edf12d0d49b18fd939 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2b2efe1937ca9f8815884bd4dcd5b32733025103 [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-2024-42072 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-2024-42072
weaknesses.