CVE-2024-40996
"Linux Kernel BPF Integer Overflow Detection"
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We'd like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn't interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace.
INFO
Published Date :
July 12, 2024, 1:15 p.m.
Last Modified :
Nov. 21, 2024, 9:32 a.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-2024-40996.
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-2024-40996 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-40996 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 Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/2bbe3e5a2f4ef69d13be54f1cf895b4658287080 Added Reference https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a Added Reference https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866 Added Reference https://git.kernel.org/stable/c/dacc15e9cb248d19e5fc63c54bef0b9b55007761 -
Initial Analysis by [email protected]
Aug. 21, 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/2bbe3e5a2f4ef69d13be54f1cf895b4658287080 No Types Assigned https://git.kernel.org/stable/c/2bbe3e5a2f4ef69d13be54f1cf895b4658287080 Patch Changed Reference Type https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a No Types Assigned https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a Patch Changed Reference Type https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866 No Types Assigned https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866 Patch Changed Reference Type https://git.kernel.org/stable/c/dacc15e9cb248d19e5fc63c54bef0b9b55007761 No Types Assigned https://git.kernel.org/stable/c/dacc15e9cb248d19e5fc63c54bef0b9b55007761 Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.86 up to (excluding) 6.1.96 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.27 up to (excluding) 6.6.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.9.7 *cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* *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:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 12, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We'd like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn't interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace. Added Reference kernel.org https://git.kernel.org/stable/c/dacc15e9cb248d19e5fc63c54bef0b9b55007761 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2bbe3e5a2f4ef69d13be54f1cf895b4658287080 [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-2024-40996 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-2024-40996
weaknesses.