Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0d3ff067331ef84e7e7f49537d768881042ed5ba before 11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf; affected 0d3ff067331ef84e7e7f49537d768881042ed5ba before df45337587db21c502fe5251d3bcc7887428f4fb; affected 0d3ff067331ef84e7e7f49537d768881042ed5ba before 4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea; affected 0d3ff067331ef84e7e7f49537d768881042ed5ba before 761eda315a6e1fda3e8e2185b28430771fb1ac29 |
| Linux / Linux | affected 6.11; unaffected 0 before 6.11; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.