What is CVE-2026-93260?

CVE-2026-93260 is a High severity Linux kernel vulnerability with a CVSS score of 7.4 out of 10, affecting Linux kernel versions from 4.12 onward and patched in 7.2.6 and 7.3-rc1. CVE-2026-93260 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-93260?

CVE-2026-93260 has a CVSS score of 7.4 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-93260?

Yes, CVE-2026-93260 has been patched. Fixed versions include 7.2.6 and 7.3-rc1. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-93260 actively exploited?

CVE-2026-93260 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-93260

High

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.

Package Linux Kernel

Published 2026-09-24

Last modified 2026-09-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.4

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected versions

Linux kernel versions 4.12 and later are affected. Fixed in 7.2.6, 7.3-rc1 and their respective stable series.

Affected from

≥ 4.12

Fixed in

✓ 7.2.6 7.2.x ✓ 7.3-rc1

References

2 total

Details

CVE ID CVE-2026-93260

Severity High

CVSS score 7.4 / 10

CVSS version 3.1

Published 2026-09-24

Modified 2026-09-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-93260?

CVE-2026-93260 is a High severity Linux kernel vulnerability with a CVSS score of 7.4 out of 10 . It affects Linux kernel versions from 4.12 onward and has been patched in 7.2.6 and 7.3-rc1. CVE-2026-93260 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-93260?

CVE-2026-93260 has a CVSS score of 7.4 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-93260?

Yes. CVE-2026-93260 has been patched. Fixed versions include 7.2.6 and 7.3-rc1. If you are running Linux kernel 4.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-93260 actively exploited?

No. CVE-2026-93260 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.