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 addresses two vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 9.4 Extended Update Support. CVE-2025-39841 fixes a buffer free/clear order issue in the deferred receive path of the SCSI lpfc driver, which could lead to memory management problems. CVE-2025-39883 fixes a kernel memory management bug where VM_BUG_ON_PAGE(PagePoisoned(page)) triggers incorrectly when unpoisoning memory. The advisory provides updated kernel packages to resolve these issues. The update is rated as having moderate security impact by Red Hat Product Security. Systems must be rebooted after applying the update for the fixes to take effect.
Potential Impact
The vulnerabilities affect the Linux kernel core in Red Hat Enterprise Linux 9.4 Extended Update Support. They involve memory management bugs that could potentially lead to system instability or memory corruption. The advisory rates the security impact as moderate. There are no known exploits in the wild reported at this time.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.4 Extended Update Support should apply the kernel update as described in the Red Hat advisory (RHSA-2025:22661) and reboot their systems to activate the fixes. This is the official and recommended remediation.
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 addresses two vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 9.4 Extended Update Support. CVE-2025-39841 fixes a buffer free/clear order issue in the deferred receive path of the SCSI lpfc driver, which could lead to memory management problems. CVE-2025-39883 fixes a kernel memory management bug where VM_BUG_ON_PAGE(PagePoisoned(page)) triggers incorrectly when unpoisoning memory. The advisory provides updated kernel packages to resolve these issues. The update is rated as having moderate security impact by Red Hat Product Security. Systems must be rebooted after applying the update for the fixes to take effect.
Potential Impact
The vulnerabilities affect the Linux kernel core in Red Hat Enterprise Linux 9.4 Extended Update Support. They involve memory management bugs that could potentially lead to system instability or memory corruption. The advisory rates the security impact as moderate. There are no known exploits in the wild reported at this time.
Mitigation Recommendations
Red Hat has released updated kernel packages that fix these vulnerabilities. Users of Red Hat Enterprise Linux 9.4 Extended Update Support should apply the kernel update as described in the Red Hat advisory (RHSA-2025:22661) and reboot their systems to activate the fixes. This is the official and recommended remediation.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:22661
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-39883"]
- Cvss Version
- null
Threat ID: 6a3da1da4853345fc1828c7e
Added to database: 06/25/2026, 21:47:06 UTC
Last enriched: 06/25/2026, 22:20:01 UTC
Last updated: 06/30/2026, 21:51:10 UTC
Views: 10
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