{"id":"CVE-2026-93260","summary":"powerpc/xive: propagate IPI init errors to prevent use-after-free","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/xive: propagate IPI init errors to prevent use-after-free\n\nWhen xive_init_ipis() fails (e.g. irq_domain_alloc_irqs() fails),\nthe error path frees the global xive_ipis array.  However,\nxive_smp_probe() previously ignored this failure and proceeded to\ncall xive_setup_cpu_ipi(), which dereferences the already-freed\nxive_ipis pointer -- a use-after-free.\n\nNow that xive_smp_probe() returns int (previous patch), propagate\nthe error from xive_init_ipis() and xive_setup_cpu_ipi() through\nxive_smp_probe().  Check the return value in both pnv_smp_probe()\nand pSeries_smp_probe() so that IPI setup is aborted cleanly on\nfailure, avoiding the use-after-free.","modified":"2026-09-25T03:48:53.738136929Z","published":"2026-09-24T15:51:46.703Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93260.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/411a3c016e7a95f5fa105a0587e07d0647a77727"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c554a8d376d5aea1b237ed6bef6f9fbfc550e67f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93260.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93260"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"243e25112d06b348f087a6f7aba4bbc288285bdd"},{"fixed":"c554a8d376d5aea1b237ed6bef6f9fbfc550e67f"},{"fixed":"411a3c016e7a95f5fa105a0587e07d0647a77727"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93260.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.12.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93260.json"}}],"schema_version":"1.9.0"}