CVE-2026-43124

In the Linux kernel, the following vulnerability has been resolved: pstore: ram_core: fix incorrect success return when vmap() fails In persistent_ram_vmap(), vmap() may return NULL on failure. If offset is non-zero, adding offset_in_page(start) causes the function to return a non-NULL pointer even though the mapping failed. persistent_ram_buffer_map() therefore incorrectly returns success. Subsequent access to prz->buffer may dereference an invalid address and cause crashes. Add proper NULL checking for vmap() failures.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/05363abc7625cf18c96e67f50673cd07f11da5e9	Patch
https://git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003	Patch
https://git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb	Patch
https://git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c	Patch
https://git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75	Patch
https://git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9	Patch
https://git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441	Patch
https://git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b	Patch

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-05-06 12:16

Updated : 2026-06-17 10:48

NVD link : CVE-2026-43124

Mitre link : CVE-2026-43124

CVE.ORG link : CVE-2026-43124

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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