CVE-2021-47298
Linux kernel BPF Sockmap Memory Leak
Description
In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix potential memory leak on unlikely error case If skb_linearize is needed and fails we could leak a msg on the error handling. To fix ensure we kfree the msg block before returning error. Found during code review.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
Dec. 23, 2024, 4:39 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-2021-47298.
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-2021-47298 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47298 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.
-
Initial Analysis by [email protected]
Dec. 23, 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 Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.54 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.13.6 *cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* Changed Reference Type https://git.kernel.org/stable/c/6c508a1c6c62793dc6e6872cad4b200097bab7c9 No Types Assigned https://git.kernel.org/stable/c/6c508a1c6c62793dc6e6872cad4b200097bab7c9 Patch Changed Reference Type https://git.kernel.org/stable/c/6c508a1c6c62793dc6e6872cad4b200097bab7c9 No Types Assigned https://git.kernel.org/stable/c/6c508a1c6c62793dc6e6872cad4b200097bab7c9 Patch Changed Reference Type https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 No Types Assigned https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 Patch Changed Reference Type https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 No Types Assigned https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 Patch Changed Reference Type https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 No Types Assigned https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 Patch Changed Reference Type https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 No Types Assigned https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 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/6c508a1c6c62793dc6e6872cad4b200097bab7c9 Added Reference https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 Added Reference https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: Fix potential memory leak on unlikely error case If skb_linearize is needed and fails we could leak a msg on the error handling. To fix ensure we kfree the msg block before returning error. Found during code review. Added Reference kernel.org https://git.kernel.org/stable/c/715f378f42909c401ec043f5150c4fdf57fb8889 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6c508a1c6c62793dc6e6872cad4b200097bab7c9 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7e6b27a69167f97c56b5437871d29e9722c3e470 [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-2021-47298 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-2021-47298
weaknesses.