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: NFS: Fix a race when updating an existing write (CVE-2025-39697) * kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971) 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
Red Hat issued a security advisory (RHSA-2025:21917) for the Linux kernel packages in Red Hat Enterprise Linux 8, addressing multiple vulnerabilities. The key fixes include a race condition in the NFS subsystem (CVE-2025-39697) and an index validation issue in the i40e network driver (CVE-2025-39971). These vulnerabilities could potentially affect kernel stability or security. The advisory recommends applying the updated kernel packages and rebooting the system to activate the fixes. The advisory covers multiple architectures including x86_64, s390x, ppc64le, and aarch64. The update is rated as moderate severity by Red Hat Product Security. No CVSS scores are provided in the advisory, and no exploits are currently known in the wild.
Potential Impact
The vulnerabilities fixed include a race condition in the NFS subsystem and an index validation flaw in the i40e network driver. These issues could lead to inconsistent kernel behavior or potential denial of service conditions. The advisory rates the impact as moderate. There are no reports of active exploitation in the wild. Systems running affected kernel versions prior to the update may be vulnerable to these issues.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2025:21917 and reboot affected systems to ensure the fixes take effect. The vendor provides detailed instructions on applying the update at https://access.redhat.com/articles/11258. No additional mitigation steps 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: NFS: Fix a race when updating an existing write (CVE-2025-39697) * kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971) 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
Red Hat issued a security advisory (RHSA-2025:21917) for the Linux kernel packages in Red Hat Enterprise Linux 8, addressing multiple vulnerabilities. The key fixes include a race condition in the NFS subsystem (CVE-2025-39697) and an index validation issue in the i40e network driver (CVE-2025-39971). These vulnerabilities could potentially affect kernel stability or security. The advisory recommends applying the updated kernel packages and rebooting the system to activate the fixes. The advisory covers multiple architectures including x86_64, s390x, ppc64le, and aarch64. The update is rated as moderate severity by Red Hat Product Security. No CVSS scores are provided in the advisory, and no exploits are currently known in the wild.
Potential Impact
The vulnerabilities fixed include a race condition in the NFS subsystem and an index validation flaw in the i40e network driver. These issues could lead to inconsistent kernel behavior or potential denial of service conditions. The advisory rates the impact as moderate. There are no reports of active exploitation in the wild. Systems running affected kernel versions prior to the update may be vulnerable to these issues.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2025:21917 and reboot affected systems to ensure the fixes take effect. The vendor provides detailed instructions on applying the update at https://access.redhat.com/articles/11258. No additional mitigation steps 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-2025:21917
- Cve Count
- 3
- Additional Cves
- ["CVE-2025-39971","CVE-2025-39973"]
- Cvss Version
- null
Threat ID: 6a3da1db4853345fc18291c0
Added to database: 06/25/2026, 21:47:07 UTC
Last enriched: 06/25/2026, 22:21:11 UTC
Last updated: 07/03/2026, 08:51:21 UTC
Views: 16
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