5.5

CVE-2023-52976

In the Linux kernel, the following vulnerability has been resolved:

efi: fix potential NULL deref in efi_mem_reserve_persistent

When iterating on a linked list, a result of memremap is dereferenced
without checking it for NULL.

This patch adds a check that falls back on allocating a new page in
case memremap doesn't succeed.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

[ardb: return -ENOMEM instead of breaking out of the loop]
Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
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Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 5.1.16 < 5.4.232
LinuxLinux Kernel Version >= 5.5 < 5.10.168
LinuxLinux Kernel Version >= 5.11 < 5.15.93
LinuxLinux Kernel Version >= 5.16 < 6.1.11
LinuxLinux Kernel Version6.2 Updaterc1
LinuxLinux Kernel Version6.2 Updaterc2
LinuxLinux Kernel Version6.2 Updaterc3
LinuxLinux Kernel Version6.2 Updaterc4
LinuxLinux Kernel Version6.2 Updaterc5
LinuxLinux Kernel Version6.2 Updaterc6
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.04% 0.106
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.