{"id":"CVE-2026-93260","title":"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","summary":"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 xiv…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 243e25112d06b348f087a6f7aba4bbc288285bdd < c554a8d376d5aea1b237ed6bef6f9fbfc550e67f","Linux >= 243e25112d06b348f087a6f7aba4bbc288285bdd < 411a3c016e7a95f5fa105a0587e07d0647a77727","Linux 4.12"],"published":"2026-09-24","updated":"2026-09-25","sourceUpdated":"2026-09-25T05:17:01.133","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93260","references":[{"url":"https://git.kernel.org/stable/c/411a3c016e7a95f5fa105a0587e07d0647a77727","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c554a8d376d5aea1b237ed6bef6f9fbfc550e67f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.835Z","slug":"CVE-2026-93260","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":210521,"id":"CVE-2026-93260","ts":1790316054546,"field":"cvss","old":null,"new":"7.4"},{"seq":210520,"id":"CVE-2026-93260","ts":1790316054546,"field":"severity","old":"none","new":"high"}]}