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Vulnerability · Published Sep 24, 2026 · Assigned by Linux

CVE-2026-93260powerpc/xive: propagate IPI init errors to prevent use-after-free

High 7.4

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.1%top 96.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2026-93260
Debian:13linux6.12.115-2DEBIAN-CVE-2026-93260
Debian:14linux7.2.6-1DEBIAN-CVE-2026-93260
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux7.0.0-42.42UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-aws7.0.0-1016.17UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-aws-7.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-7.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-fde-7.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-gcp7.0.0-1016.18UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gcp-7.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-42.42~24.04.1UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-ibm7.0.0-1017.17UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-nvidia-7.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-nvidia-bosno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1017.17UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-oracle7.0.0-1015.16UBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-oracle-7.0no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-93260
Ubuntu:26.04:LTSlinux-riscv7.0.0-42.42.1UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-42.42.1~24.04.1UBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-93260
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-93260
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-93260

Affected products (as reported)

VendorProductVersions
Linux Linux 243e25112d06b348f087a6f7aba4bbc288285bdd – before 89e1caa5b0aafe23e9938d9a311e9d41baee583e243e25112d06b348f087a6f7aba4bbc288285bdd – before e36b1c2eafcaaddefa70d55e6fda74cf6cda38af243e25112d06b348f087a6f7aba4bbc288285bdd – before 2ea6238343691309e68308131c7e80c3ae05afea243e25112d06b348f087a6f7aba4bbc288285bdd – before 5c9ab0c9cede9f149733d330e2d7d45341b71359243e25112d06b348f087a6f7aba4bbc288285bdd – before c554a8d376d5aea1b237ed6bef6f9fbfc550e67f243e25112d06b348f087a6f7aba4bbc288285bdd – before 411a3c016e7a95f5fa105a0587e07d0647a77727
Linux Linux 4.12

References