CVE-2021-46991
i40e: Fix use-after-free in i40e_client_subtask()
Description
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix use-after-free in i40e_client_subtask() Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer after free")
INFO
Published Date :
Feb. 28, 2024, 9:15 a.m.
Last Modified :
Dec. 6, 2024, 3:27 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 Linux kernel packages.
- Reboot the system after the update.
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-2021-46991.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-46991 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-2021-46991
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-2021-46991 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-46991 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. 06, 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) 4.16 up to (excluding) 4.19.191 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.120 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.38 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.11.22 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.5 Changed Reference Type https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 No Types Assigned https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 Patch Changed Reference Type https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 No Types Assigned https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 Patch Changed Reference Type https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 No Types Assigned https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 Patch Changed Reference Type https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 No Types Assigned https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 Patch Changed Reference Type https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 No Types Assigned https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 Patch Changed Reference Type https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 No Types Assigned https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 Patch Changed Reference Type https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 No Types Assigned https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 Patch Changed Reference Type https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 No Types Assigned https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 Patch Changed Reference Type https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 No Types Assigned https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 Patch Changed Reference Type https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 No Types Assigned https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 Patch Changed Reference Type https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 No Types Assigned https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 Patch Changed Reference Type https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 No Types Assigned https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 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/1fd5d262e7442192ac7611ff1597a36c5b044323 Added Reference https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 Added Reference https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 Added Reference https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 Added Reference https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 Added Reference https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 -
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: i40e: Fix use-after-free in i40e_client_subtask() Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer after free") Added Reference Linux https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3 [No types assigned]