powerpc/xive: propagate IPI init errors to prevent use-after-free
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.
CVE-2026-93260
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-93260
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "243e25112d06b348f087a6f7aba4bbc288285bdd",
"lessThan": "e36b1c2eafcaaddefa70d55e6fda74cf6cda38af",
"versionType": "git"
},
{
"status": "affected",
"version": "243e25112d06b348f087a6f7aba4bbc288285bdd",
"lessThan": "2ea6238343691309e68308131c7e80c3ae05afea",
"versionType": "git"
},
{
"status": "affected",
"version": "243e25112d06b348f087a6f7aba4bbc288285bdd",
"lessThan": "5c9ab0c9cede9f149733d330e2d7d45341b71359",
"versionType": "git"
},
{
"status": "affected",
"version": "243e25112d06b348f087a6f7aba4bbc288285bdd",
"lessThan": "c554a8d376d5aea1b237ed6bef6f9fbfc550e67f",
"versionType": "git"
},
{
"status": "affected",
"version": "243e25112d06b348f087a6f7aba4bbc288285bdd",
"lessThan": "411a3c016e7a95f5fa105a0587e07d0647a77727",
"versionType": "git"
}
],
"programFiles": [
"arch/powerpc/platforms/powernv/smp.c",
"arch/powerpc/platforms/pseries/smp.c",
"arch/powerpc/sysdev/xive/common.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"arch/powerpc/platforms/powernv/smp.c",
"arch/powerpc/platforms/pseries/smp.c",
"arch/powerpc/sysdev/xive/common.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93260
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48744 · Revision 1
- Added to Heist Feed
- Publisher date