CVE-2026-89963
CVE CVE-2026-89963EUVD EUVD-2026-80563Published 2026-09-16T10:32:45.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 0; 0d3ff067331ef84e7e7f49537d768881042ed5ba <4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea; patch: 6.12.110; 0d3ff067331ef84e7e7f49537d768881042ed5ba <df45337587db21c502fe5251d3bcc7887428f4fb; patch: 7.2.5; 0d3ff067331ef84e7e7f49537d768881042ed5ba <761eda315a6e1fda3e8e2185b28430771fb1ac29; patch: 6.18.51; 6.11; patch: 7.3-rc1; 0d3ff067331ef84e7e7f49537d768881042ed5ba <11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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