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Red Hat Security Advisory: kernel security update

0
Medium
Published: 10/27/2025 (10/27/2025, 19:03:20 UTC)
Source: GCVE Database
Vendor/Project: Red Hat Product Security
Product: Red Hat

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

redhat/kernel
pkg:rpm/redhat/kernel
Affected versions
=10.0<10.2>=10.2

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/25/2026, 22:27:17 UTC

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.

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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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