CVE-2026-93260

CVE CVE-2026-93260EUVD EUVD-2026-86132Published 2026-09-24T15:51:46.000ZLast changed 2026-09-25T05:09:53.000ZCVSS 7.4

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: powerpc/xive: propagate IPI init errors to prevent use-after-free When xive_init_ipis() fails (e.g. irq_domain_alloc_irqs() fails), the error path frees the global xive_ipis array. However, xive_smp_probe() previously ignored this failure and proceeded to call xive_setup_cpu_ipi(), which dereferences the already-freed xive_ipis pointer -- a use-after-free. Now that xive_smp_probe() returns int (previous patch), propagate the error from xive_init_ipis() and xive_setup_cpu_ipi() through xive_smp_probe(). Check the return value in both pnv_smp_probe() and pSeries_smp_probe() so that IPI setup is aborted cleanly on failure, avoiding the use-after-free.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.2.6; 243e25112d06b348f087a6f7aba4bbc288285bdd <c554a8d376d5aea1b237ed6bef6f9fbfc550e67f; 4.12; patch: 7.3-rc1; patch: 0; 243e25112d06b348f087a6f7aba4bbc288285bdd <411a3c016e7a95f5fa105a0587e07d0647a77727

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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