CVE-2026-80724

CVE-2026-80724 affects the Linux kernel component ptp vmclock . The function vmclock_miscdev_mmap() rejects writable mappings of the shared vmclock ABI page with -EROFS but leaves VM_MAYWRITE set. This allows a guest to map the page read-only and then upgrade it to writable via mprotect(), after ...

EUVD-2026-67460

In the Linux kernel, the following vulnerability has been resolved: ptp: vmclock: prevent read-only mappings from becoming writable vmclockmiscdevmmap rejects writable mappings of the shared vmclock ABI page with -EROFS, but leaves VMMAYWRITE set. Userspace can map the page read-only and then...