CVE-2021-47049
Drivers: hv: vmbus: Use after free in __vmbus_open()
Description
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Use after free in __vmbus_open() The "open_info" variable is added to the &vmbus_connection.chn_msg_list, but the error handling frees "open_info" without removing it from the list. This will result in a use after free. First remove it from the list, and then free it.
INFO
Published Date :
Feb. 28, 2024, 9:15 a.m.
Last Modified :
Dec. 9, 2024, 7:06 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the affected kernel packages.
- Update the affected packages.
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-2021-47049.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47049 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-2021-47049
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-2021-47049 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47049 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. 09, 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 Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.14 up to (excluding) 5.10.37 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.11.21 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.4 Changed Reference Type https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 No Types Assigned https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 Patch Changed Reference Type https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 No Types Assigned https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 Patch Changed Reference Type https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da No Types Assigned https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da Patch Changed Reference Type https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da No Types Assigned https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da Patch Changed Reference Type https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f No Types Assigned https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f Patch Changed Reference Type https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f No Types Assigned https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f Patch Changed Reference Type https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 No Types Assigned https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 Patch Changed Reference Type https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 No Types Assigned https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 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/2728f289b3270b0e273292b46c534421a33bbfd5 Added Reference https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da Added Reference https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f Added Reference https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 -
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 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 28, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Use after free in __vmbus_open() The "open_info" variable is added to the &vmbus_connection.chn_msg_list, but the error handling frees "open_info" without removing it from the list. This will result in a use after free. First remove it from the list, and then free it. Added Reference Linux https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da [No types assigned]