CVE-2021-46908
Linux Kernel BPF Use-After-Free Spectre V1
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks.
INFO
Published Date :
Feb. 27, 2024, 7:15 a.m.
Last Modified :
April 17, 2024, 5:15 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-2021-46908.
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-2021-46908 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-46908 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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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Apr. 17, 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/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 No Types Assigned https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 Patch Changed Reference Type https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 No Types Assigned https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 Patch Changed Reference Type https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be No Types Assigned https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8.0 up to (excluding) 5.10.32 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (excluding) 5.11.16 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 27, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Use correct permission flag for mixed signed bounds arithmetic We forbid adding unknown scalars with mixed signed bounds due to the spectre v1 masking mitigation. Hence this also needs bypass_spec_v1 flag instead of allow_ptr_leaks. Added Reference Linux https://git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be [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-2021-46908 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-2021-46908
weaknesses.