CVE-2026-89963: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 0d3ff067331ef84e7e7f49537d768881042ed5ba преди 11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf; 0d3ff067331ef84e7e7f49537d768881042ed5ba преди df45337587db21c502fe5251d3bcc7887428f4fb; 0d3ff067331ef84e7e7f49537d768881042ed5ba преди 4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea; 0d3ff067331ef84e7e7f49537d768881042ed5ba преди 761eda315a6e1fda3e8e2185b28430771fb1ac29
• Linux Linux: 6.11; преди 6.11; 6.12.110 до 6.12.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; 7.3 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89963
• https://nvd.nist.gov/vuln/detail/CVE-2026-89963
• 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