PT-2024-11457 · Linux+2 · Linux Kernel+2
Darrick J. Wong
+1
·
Published
2021-10-18
·
Updated
2025-01-15
·
CVE-2021-47463
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A NULL pointer dereference issue has been resolved in the Linux kernel. The issue occurs when the page's mapping can be nullified while gup() is running, for example, by reclaim or truncation. This can lead to a kernel NULL pointer dereference. The
page is secretmem() function is affected, and the issue can be triggered when the internal get user pages fast() function is called. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse