CVE-2021-47307

MEDIUM

Linux Kernel < 5.4.135 - NULL Pointer Dereference in cifs_compose_mount_options()

Title source: llm

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")

References (4)

Core 4

Core References

Patch

https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759

Patch

https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796

Patch

https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d

Patch

https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306

Scores

CVSS v3 5.5

EPSS 0.0024

EPSS Percentile 14.4%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-476

Status published

Products (11)

Linux/Linux < 2.6.28

Linux/Linux 2.6.28

Linux/Linux 2c55608f28444c3f33b10312881384c470ceed56 - 03313d1c3a2f086bb60920607ab79ac8f8578306

Linux/Linux 2c55608f28444c3f33b10312881384c470ceed56 - ae3d181f4e912f51af7776ea165f199b16fc165d

Linux/Linux 2c55608f28444c3f33b10312881384c470ceed56 - e58c162789becede894d3e94c0ce6695a2ef5796

Linux/Linux 2c55608f28444c3f33b10312881384c470ceed56 - f7d1fa65e74263d11f90ddd33b4d4cd905a93759

Linux/Linux 5.10.53 - 5.10.*

Linux/Linux 5.13.5 - 5.13.*

Linux/Linux 5.14

Linux/Linux 5.4.135 - 5.4.*

... and 1 more

Published May 21, 2024

Tracked Since Feb 18, 2026