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: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration (CVE-2026-23097) * kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193) * kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) 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 covers multiple vulnerabilities in the Linux kernel, notably CVE-2026-23097, which is a denial of service vulnerability due to a deadlock in hugetlb folio migration, and CVE-2026-31402, a heap overflow in the NFSv4.0 LOCK replay cache. The advisory applies to Red Hat Enterprise Linux 9.6 Extended Update Support and associated CodeReady Linux Builder and BaseOS components. The vendor has released updated kernel packages to address these issues and recommends rebooting the system after applying the update. No CVSS scores are provided in the advisory, but the impact is rated moderate by Red Hat Product Security.
Potential Impact
The vulnerabilities could cause denial of service conditions due to kernel deadlocks and memory corruption via heap overflow, potentially affecting system stability and security. There are no known exploits in the wild at the time of the advisory. The issues affect core Linux kernel functionality on affected Red Hat Enterprise Linux 9.6 Extended Update Support systems and related products.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.6 Extended Update Support and related products should apply the provided kernel update as detailed in the Red Hat advisory (RHSA-2026:11313) and reboot their systems to activate the fixes. Patch status is confirmed as available and official. No additional mitigation steps are indicated by the vendor.
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: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration (CVE-2026-23097) * kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() (CVE-2026-23193) * kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) 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 covers multiple vulnerabilities in the Linux kernel, notably CVE-2026-23097, which is a denial of service vulnerability due to a deadlock in hugetlb folio migration, and CVE-2026-31402, a heap overflow in the NFSv4.0 LOCK replay cache. The advisory applies to Red Hat Enterprise Linux 9.6 Extended Update Support and associated CodeReady Linux Builder and BaseOS components. The vendor has released updated kernel packages to address these issues and recommends rebooting the system after applying the update. No CVSS scores are provided in the advisory, but the impact is rated moderate by Red Hat Product Security.
Potential Impact
The vulnerabilities could cause denial of service conditions due to kernel deadlocks and memory corruption via heap overflow, potentially affecting system stability and security. There are no known exploits in the wild at the time of the advisory. The issues affect core Linux kernel functionality on affected Red Hat Enterprise Linux 9.6 Extended Update Support systems and related products.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.6 Extended Update Support and related products should apply the provided kernel update as detailed in the Red Hat advisory (RHSA-2026:11313) and reboot their systems to activate the fixes. Patch status is confirmed as available and official. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:15883
- Cve Count
- 6
- Additional Cves
- ["CVE-2026-23139","CVE-2026-23243","CVE-2026-23401","CVE-2026-31402","CVE-2026-31532"]
- Cvss Version
- null
Threat ID: 6a160981e29bf47b5064eb57
Added to database: 05/26/2026, 20:58:41 UTC
Last enriched: 07/08/2026, 14:44:46 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 149
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.