CVE-2026-46100

In the Linux kernel, the following vulnerability has been resolved: fs: afs: revert mmap_prepare() change Partially reverts commit 9d5403b1036c ("fs: convert most other generic_file_*mmap() users to .mmap_prepare()"). This is because the .mmap invocation establishes a refcount, but .mmap_prepare is called at a point where a merge or an allocation failure might happen after the call, which would leak the refcount increment. Functionality is being added to permit the use of .mmap_prepare in this case, but in the interim, we need to fix this.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/48c7a0eaeea41da17d1d84d2d7a4c40be122b246	Patch
https://git.kernel.org/stable/c/f51f85c044809fbd39ac8ae07ac99bc43ce32bd5	Patch
https://git.kernel.org/stable/c/fbfc6578eaca12daa0c09df1e9ba7f2c657b49da	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

25 Jun 2026, 21:18

Type	Values Removed	Values Added
CPE		cpe:2.3:o:linux:linux_kernel::::::::
CWE		NVD-CWE-noinfo
References	~~() https://git.kernel.org/stable/c/48c7a0eaeea41da17d1d84d2d7a4c40be122b246 -~~	() https://git.kernel.org/stable/c/48c7a0eaeea41da17d1d84d2d7a4c40be122b246 - Patch
References	~~() https://git.kernel.org/stable/c/f51f85c044809fbd39ac8ae07ac99bc43ce32bd5 -~~	() https://git.kernel.org/stable/c/f51f85c044809fbd39ac8ae07ac99bc43ce32bd5 - Patch
References	~~() https://git.kernel.org/stable/c/fbfc6578eaca12daa0c09df1e9ba7f2c657b49da -~~	() https://git.kernel.org/stable/c/fbfc6578eaca12daa0c09df1e9ba7f2c657b49da - Patch
First Time		Linux linux Kernel Linux

30 May 2026, 11:17

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8

27 May 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-27 14:17

Updated : 2026-06-25 21:18

NVD link : CVE-2026-46100

Mitre link : CVE-2026-46100

CVE.ORG link : CVE-2026-46100

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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