Important: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) * kernel: dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature (CVE-2025-21966) * kernel: net: ppp: Add bound checking for skb data on ppp_sync_txmung (CVE-2025-37749) 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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: vsock: Keep the binding until socket destruction (CVE-2025-21756) * kernel: dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature (CVE-2025-21966) * kernel: net: ppp: Add bound checking for skb data on ppp_sync_txmung (CVE-2025-37749) 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.
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2025:7903
- https://access.redhat.com/security/cve/CVE-2025-21756
- https://access.redhat.com/security/cve/CVE-2025-21966
- https://access.redhat.com/security/cve/CVE-2025-37749
- https://bugzilla.redhat.com/2348609
- https://bugzilla.redhat.com/2356605
- https://bugzilla.redhat.com/2363332
- https://errata.almalinux.org/9/ALSA-2025-7903.html