CVE-2021-29648
Linux Kernel BPF Subsystem Denial of Service
Description
An issue was discovered in the Linux kernel before 5.11.11. The BPF subsystem does not properly consider that resolved_ids and resolved_sizes are intentionally uninitialized in the vmlinux BPF Type Format (BTF), which can cause a system crash upon an unexpected access attempt (in map_create in kernel/bpf/syscall.c or check_btf_info in kernel/bpf/verifier.c), aka CID-350a5c4dd245.
INFO
Published Date :
March 30, 2021, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 6:01 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
CVE-2021-29648 vulnerability.
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-2021-29648.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-29648 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-2021-29648
weaknesses.
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-2021-29648 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-29648 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://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11 Added Reference https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=350a5c4dd2452ea999cc5e1d4a8dbf12de2f97ef Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/ Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/ Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/ -
Initial Analysis by [email protected]
Apr. 05, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:C) 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://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11 Mailing List, Patch, Vendor Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=350a5c4dd2452ea999cc5e1d4a8dbf12de2f97ef No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=350a5c4dd2452ea999cc5e1d4a8dbf12de2f97ef Mailing List, Patch, Vendor Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/ Mailing List, Third Party Advisory Added CWE NIST CWE-307 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.11.11 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 02, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 02, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/ [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 5.5
Base CVSS Score: 4.9
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.17021
percentile