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: vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718) * kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730) * kernel: mm: swap: fix potential buffer overflow in setup_clusters() (CVE-2025-39727) * kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (CVE-2025-39751) * kernel: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() (CVE-2025-39849) 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-2025:19106) addresses six vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 10. The fixed issues include a race condition when updating an existing NFS write (CVE-2025-39697), validation of packet header length in vsock/virtio before skb_put() (CVE-2025-39718), filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730), a potential buffer overflow in mm swap setup_clusters() (CVE-2025-39727), a buffer overflow in ALSA hda/ca0132 add_tuning_control (CVE-2025-39751), and capping SSID length in wifi cfg80211 sme connect result (CVE-2025-39849). These vulnerabilities could lead to kernel memory corruption or race conditions. The advisory provides updated kernel packages and requires rebooting the system for the fixes to apply.
Potential Impact
The vulnerabilities fixed in this advisory could allow local or potentially remote attackers to cause race conditions or buffer overflows within the kernel, leading to possible denial of service or privilege escalation. The issues affect core kernel components including NFS, virtual socket communication, memory management, audio drivers, and wifi configuration. Exploitation could compromise system stability or security. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated kernel packages for Red Hat Enterprise Linux 10 that address these vulnerabilities. Users should apply the available kernel update as described in the Red Hat advisory and reboot their systems to ensure the fixes take effect. Patch status is confirmed as official-fix by Red Hat Product Security.
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: vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718) * kernel: NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730) * kernel: mm: swap: fix potential buffer overflow in setup_clusters() (CVE-2025-39727) * kernel: ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control (CVE-2025-39751) * kernel: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() (CVE-2025-39849) 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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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2025:19106) addresses six vulnerabilities in the Linux kernel packages for Red Hat Enterprise Linux 10. The fixed issues include a race condition when updating an existing NFS write (CVE-2025-39697), validation of packet header length in vsock/virtio before skb_put() (CVE-2025-39718), filehandle bounds checking in nfs_fh_to_dentry() (CVE-2025-39730), a potential buffer overflow in mm swap setup_clusters() (CVE-2025-39727), a buffer overflow in ALSA hda/ca0132 add_tuning_control (CVE-2025-39751), and capping SSID length in wifi cfg80211 sme connect result (CVE-2025-39849). These vulnerabilities could lead to kernel memory corruption or race conditions. The advisory provides updated kernel packages and requires rebooting the system for the fixes to apply.
Potential Impact
The vulnerabilities fixed in this advisory could allow local or potentially remote attackers to cause race conditions or buffer overflows within the kernel, leading to possible denial of service or privilege escalation. The issues affect core kernel components including NFS, virtual socket communication, memory management, audio drivers, and wifi configuration. Exploitation could compromise system stability or security. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated kernel packages for Red Hat Enterprise Linux 10 that address these vulnerabilities. Users should apply the available kernel update as described in the Red Hat advisory and reboot their systems to ensure the fixes take effect. Patch status is confirmed as official-fix by Red Hat Product Security.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:19106
- Cve Count
- 6
- Additional Cves
- ["CVE-2025-39718","CVE-2025-39727","CVE-2025-39730","CVE-2025-39751","CVE-2025-39849"]
- Cvss Version
- null
Threat ID: 6a3da1e04853345fc182b9d0
Added to database: 06/25/2026, 21:47:12 UTC
Last enriched: 06/25/2026, 22:27:17 UTC
Last updated: 07/02/2026, 17:51:10 UTC
Views: 23
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