CVE-2021-47307
Linux Kernel CIFS NULL Pointer Dereference Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: cifs: prevent NULL deref in cifs_compose_mount_options() The optional @ref parameter might contain an NULL node_name, so prevent dereferencing it in cifs_compose_mount_options(). Addresses-Coverity: 1476408 ("Explicit null dereferenced")
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
Dec. 26, 2024, 6:44 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-2021-47307.
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-2021-47307 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47307 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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Initial Analysis by [email protected]
Dec. 26, 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-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.4.135 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.53 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.13.5 Changed Reference Type https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306 No Types Assigned https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306 Patch Changed Reference Type https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306 No Types Assigned https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306 Patch Changed Reference Type https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d No Types Assigned https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d Patch Changed Reference Type https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d No Types Assigned https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d Patch Changed Reference Type https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796 No Types Assigned https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796 Patch Changed Reference Type https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796 No Types Assigned https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796 Patch Changed Reference Type https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759 No Types Assigned https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759 Patch Changed Reference Type https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759 No Types Assigned https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759 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/03313d1c3a2f086bb60920607ab79ac8f8578306 Added Reference https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d Added Reference https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796 Added Reference https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759 -
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: cifs: prevent NULL deref in cifs_compose_mount_options() The optional @ref parameter might contain an NULL node_name, so prevent dereferencing it in cifs_compose_mount_options(). Addresses-Coverity: 1476408 ("Explicit null dereferenced") Added Reference kernel.org https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306 [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-2021-47307 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-2021-47307
weaknesses.