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: scsi: lpfc: Fix buffer free/clear order in deferred receive path (CVE-2025-39841) * kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883) 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-2025:22996) addresses two kernel vulnerabilities in Red Hat Enterprise Linux 9.2. CVE-2025-39841 fixes an issue in the SCSI lpfc driver related to the order of buffer free and clear operations in the deferred receive path. CVE-2025-39883 fixes a memory management bug where VM_BUG_ON_PAGE(PagePoisoned(page)) could be triggered during unpoisoning of memory. Both issues are resolved by updated kernel packages. The advisory applies to multiple Red Hat Enterprise Linux 9.2 variants across several CPU architectures. Users must apply the update and reboot systems for the fixes to take effect. No CVSS scores are provided, and no exploits are currently known.
Potential Impact
The vulnerabilities affect the Linux kernel, which is critical to system stability and security. The buffer free/clear order issue could lead to memory corruption or instability in the SCSI lpfc driver. The memory unpoisoning bug could cause kernel assertions or crashes related to poisoned memory pages. While no exploits are known in the wild, these issues could potentially impact system reliability or security if triggered.
Mitigation Recommendations
A security update for the Linux kernel packages is available from Red Hat for Red Hat Enterprise Linux 9.2. Users should apply the update as described in the Red Hat advisory RHSA-2025:22996 and reboot affected systems to ensure the fixes take effect. No alternative mitigations 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: scsi: lpfc: Fix buffer free/clear order in deferred receive path (CVE-2025-39841) * kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883) 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
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2025:22996) addresses two kernel vulnerabilities in Red Hat Enterprise Linux 9.2. CVE-2025-39841 fixes an issue in the SCSI lpfc driver related to the order of buffer free and clear operations in the deferred receive path. CVE-2025-39883 fixes a memory management bug where VM_BUG_ON_PAGE(PagePoisoned(page)) could be triggered during unpoisoning of memory. Both issues are resolved by updated kernel packages. The advisory applies to multiple Red Hat Enterprise Linux 9.2 variants across several CPU architectures. Users must apply the update and reboot systems for the fixes to take effect. No CVSS scores are provided, and no exploits are currently known.
Potential Impact
The vulnerabilities affect the Linux kernel, which is critical to system stability and security. The buffer free/clear order issue could lead to memory corruption or instability in the SCSI lpfc driver. The memory unpoisoning bug could cause kernel assertions or crashes related to poisoned memory pages. While no exploits are known in the wild, these issues could potentially impact system reliability or security if triggered.
Mitigation Recommendations
A security update for the Linux kernel packages is available from Red Hat for Red Hat Enterprise Linux 9.2. Users should apply the update as described in the Red Hat advisory RHSA-2025:22996 and reboot affected systems to ensure the fixes take effect. No alternative mitigations 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-2025:22996
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-39883"]
- Cvss Version
- null
Threat ID: 6a3da1d94853345fc1828648
Added to database: 06/25/2026, 21:47:05 UTC
Last enriched: 06/25/2026, 22:19:00 UTC
Last updated: 06/29/2026, 02:51:10 UTC
Views: 9
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