Red Hat Security Advisory: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191) * kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238) * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) * kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This Red Hat security advisory (RHSA-2026:13932) covers multiple vulnerabilities in the Linux kernel for Red Hat Enterprise Linux 9.4 EUS. Key issues include CVE-2025-71238, a double free vulnerability in the qla2xxx driver that can cause denial of service and potential privilege escalation; CVE-2026-23401, a privilege escalation or denial of service vulnerability in the KVM subsystem due to improper handling of shadow page table entries; and other fixes such as race condition in ALSA aloop, reverting crypto algif_aead to out-of-place operation, and a use-after-free in the CAN raw socket code. The advisory provides updated kernel packages and requires rebooting the system to apply the fixes.
Potential Impact
The vulnerabilities addressed can lead to denial of service conditions and potential privilege escalation on affected Red Hat Enterprise Linux 9.4 systems. Specifically, the double free in the qla2xxx driver and improper shadow page table handling in KVM could allow attackers to escalate privileges or disrupt system stability. Other fixes address race conditions and use-after-free bugs that could also impact system reliability and security.
Mitigation Recommendations
Red Hat has released updated kernel packages for Red Hat Enterprise Linux 9.4 Extended Update Support that fix these vulnerabilities. Users should apply the available kernel updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. No additional mitigations are indicated beyond applying the official update and rebooting.
Red Hat Security Advisory: kernel security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ALSA: aloop: Fix racy access at PCM trigger (CVE-2026-23191) * kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. (CVE-2025-71238) * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) * kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2026:13932) covers multiple vulnerabilities in the Linux kernel for Red Hat Enterprise Linux 9.4 EUS. Key issues include CVE-2025-71238, a double free vulnerability in the qla2xxx driver that can cause denial of service and potential privilege escalation; CVE-2026-23401, a privilege escalation or denial of service vulnerability in the KVM subsystem due to improper handling of shadow page table entries; and other fixes such as race condition in ALSA aloop, reverting crypto algif_aead to out-of-place operation, and a use-after-free in the CAN raw socket code. The advisory provides updated kernel packages and requires rebooting the system to apply the fixes.
Potential Impact
The vulnerabilities addressed can lead to denial of service conditions and potential privilege escalation on affected Red Hat Enterprise Linux 9.4 systems. Specifically, the double free in the qla2xxx driver and improper shadow page table handling in KVM could allow attackers to escalate privileges or disrupt system stability. Other fixes address race conditions and use-after-free bugs that could also impact system reliability and security.
Mitigation Recommendations
Red Hat has released updated kernel packages for Red Hat Enterprise Linux 9.4 Extended Update Support that fix these vulnerabilities. Users should apply the available kernel updates as described in the Red Hat advisory (https://access.redhat.com/articles/11258) and reboot their systems to ensure the fixes take effect. No additional mitigations are indicated beyond applying the official update and rebooting.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:13932
- Cve Count
- 6
- Additional Cves
- ["CVE-2026-23191","CVE-2026-23401","CVE-2026-31431","CVE-2026-31532","CVE-2026-43077"]
Threat ID: 6a16097fe29bf47b5064b894
Added to database: 05/26/2026, 20:58:39 UTC
Last enriched: 08/07/2026, 02:38:43 UTC
Last updated: 09/14/2026, 22:01:31 UTC
Views: 111
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.