-

CVE-2026-89963

powerpc/kexec_file: Fix null-ptr-def in extra size calculation

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

powerpc/kexec_file: Fix null-ptr-def in extra size calculation

A static Sashiko AI review identified a potential NULL pointer
dereference in kexec_extra_fdt_size_ppc64().

On platforms without any reserved memory regions,
get_reserved_memory_ranges() can return 0 while leaving 'rmem'
unallocated as NULL. Passing it directly leads to a kernel panic when
evaluating 'rmem->nr_ranges'.

Add a NULL check for 'rmem' to prevent this crash.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 0d3ff067331ef84e7e7f49537d768881042ed5ba
Version < 11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf
Status affected
Version 0d3ff067331ef84e7e7f49537d768881042ed5ba
Version < df45337587db21c502fe5251d3bcc7887428f4fb
Status affected
Version 0d3ff067331ef84e7e7f49537d768881042ed5ba
Version < 4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea
Status affected
Version 0d3ff067331ef84e7e7f49537d768881042ed5ba
Version < 761eda315a6e1fda3e8e2185b28430771fb1ac29
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.11
Status affected
Version 0
Version < 6.11
Status unaffected
Version <= 6.12.*
Version 6.12.110
Status unaffected
Version <= 6.18.*
Version 6.18.51
Status unaffected
Version <= 7.2.*
Version 7.2.5
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.102
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf
https://git.kernel.org/stable/c/df45337587db21c502fe5251d3bcc7887428f4fb
https://git.kernel.org/stable/c/4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea
https://git.kernel.org/stable/c/761eda315a6e1fda3e8e2185b28430771fb1ac29