Description
In the Linux kernel, the following vulnerability has been resolved:

ipe: fix use-after-free when auditing a newly loaded policy

new_policy() audits the policy after ipe_new_policyfs_node() publishes it
and drops the new directory's inode lock. A concurrent delete can free
the policy while ipe_audit_policy_load() is still using it.

Audit the successful load under that lock.

[FW: remove model name according to latest guideline]
Published: 2026-10-18
Score: 4.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Kernel memory corruption
Action: Patch
AI Analysis

Impact

A use‑after‑free flaw in the Linux kernel’s ipe module triggers when a new policy is audited after the directory inode lock is released. A concurrent delete can free the policy while the audit function is still referencing it, causing kernel memory corruption. If an attacker can perform a policy load and initiate a delete during the audit, the flaw could allow them to execute code in kernel mode, effectively enabling privilege escalation.

Affected Systems

All Linux kernel versions that include the ipe subsystem and support policy loading are potentially vulnerable. The CVE does not list specific affected kernel releases, so any system running a pre‑patch kernel with ipe enabled is at risk.

Risk and Exploitability

The vulnerability carries a CVSS score of 4.4, indicating low overall severity, and an EPSS score of <1%, suggesting a low likelihood of exploitation. It is not listed in the CISA KEV catalog. The flaw involves kernel memory corruption and requires local or application‑level control over policy loading. Attackers would need to trigger a policy load followed by a delete while the audit runs. Because of the low exploit probability and low severity, the primary risk is limited to a system that is exposed to such conditions, rather than widespread remote exploitation.

Generated by OpenCVE AI on October 20, 2026 at 16:18 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply a kernel update that includes the ipe use‑after‑free fix.
  • Reboot the system to load the patched kernel and ipe module.
  • If the ipe subsystem is unnecessary, recompile the kernel with CONFIG_IPE disabled or restrict write access to policy files to trusted users.

Generated by OpenCVE AI on October 20, 2026 at 16:18 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4850-1 linux-6.12 security update
History

Tue, 20 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Tue, 20 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-825
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Sun, 18 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Sun, 18 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ipe: fix use-after-free when auditing a newly loaded policy new_policy() audits the policy after ipe_new_policyfs_node() publishes it and drops the new directory's inode lock. A concurrent delete can free the policy while ipe_audit_policy_load() is still using it. Audit the successful load under that lock. [FW: remove model name according to latest guideline]
Title ipe: fix use-after-free when auditing a newly loaded policy
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-19T09:21:17.763Z

Reserved: 2026-09-25T10:25:14.355Z

Link: CVE-2026-98534

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-18T16:17:05.107

Modified: 2026-10-19T10:19:08.960

Link: CVE-2026-98534

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-18T00:00:00Z

Links: CVE-2026-98534 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T16:30:06Z

Weaknesses
  • CWE-825

    Expired Pointer Dereference