CVE-2021-47307

low-risk
Published 2024-05-21

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")

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (8)

Patch https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306
Patch https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d
Patch https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796
Patch https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759
Patch https://git.kernel.org/stable/c/03313d1c3a2f086bb60920607ab79ac8f8578306
Patch https://git.kernel.org/stable/c/ae3d181f4e912f51af7776ea165f199b16fc165d
Patch https://git.kernel.org/stable/c/e58c162789becede894d3e94c0ce6695a2ef5796
Patch https://git.kernel.org/stable/c/f7d1fa65e74263d11f90ddd33b4d4cd905a93759
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal