CVE-2026-89963
- Source
- https://cve.org/CVERecord?id=CVE-2026-89963
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89963.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-89963
- Downstream
- Published
- 2026-09-16T10:32:45Z
- Modified
- 2026-09-17T03:47:20Z
- Summary
- powerpc/kexec_file: Fix null-ptr-def in extra size calculation
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89963.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/11ef1c2a5dbe0bd8c1345f59bab7331d352f02cf
- https://git.kernel.org/stable/c/4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0dea
- https://git.kernel.org/stable/c/761eda315a6e1fda3e8e2185b28430771fb1ac29
- https://git.kernel.org/stable/c/df45337587db21c502fe5251d3bcc7887428f4fb
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89963.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-89963
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced0d3ff067331ef84e7e7f49537d768881042ed5baFixed11ef1c2a5dbe0bd8c1345f59bab7331d352f02cfFixeddf45337587db21c502fe5251d3bcc7887428f4fbFixed4ff3d9fd71c7bc2fc81afdac1970d9c55a5c0deaFixed761eda315a6e1fda3e8e2185b28430771fb1ac29