Threats Tagged 'cve-2026-52973'

A vulnerability in the Linux kernel futex subsystem related to the CLONE_THREAD requirement for private default hash allocation has been resolved. The issue involved incorrect assumptions about concurrency when sharing memory mappings (mm) in ways other than pthread semantics, leading to use-after-free bugs. This could cause kernel memory corruption and crashes. The vulnerability has been addressed by loosening the check to cover any CLONE_VM clone except vfork, preventing the race conditions. Red Hat has released security updates for Red Hat Enterprise Linux 9 and 10 to fix this issue. The updates require system reboot to take effect.

Red Hat has issued a security advisory for multiple vulnerabilities in the Linux kernel packages included with Red Hat Enterprise Linux 10. The update addresses six distinct security issues affecting kernel components such as filesystem notification, SCSI core, rtnetlink, IPv6 networking, futex, and device mapper logging. These vulnerabilities have been rated with an overall high severity impact. The advisory provides updated kernel packages to remediate these issues for various architectures and editions of Red Hat Enterprise Linux 10.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: xfrm: Duplicate SPI Handling (CVE-2025-39797) * kernel: lib/buildid: use __kernel_read() for sleepable context (CVE-2026-23002) * kernel: futex: Drop CLONE_THREAD requirement for private default hash alloc (CVE-2026-52973) * kernel: iommu/vt-d: Avoid NULL pointer dereference or refcount corruption (CVE-2026-53281) * kernel: blk-mq: pop cached request if it is usable (CVE-2026-64017) Bug Fix(es) and Enhancement(s): * general protection fault during exportfs / nfsd4_revoke_states [rhel-9.8.z] (JIRA:RHEL-188257) * Enable Pretimeout Watchdog Panic Functionality on x86 [rhel-9.8.z] (JIRA:RHEL-193729) 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.