DEBIAN-CVE-2026-64253

In the Linux kernel, the following vulnerability has been resolved: kernel/fork: clear PFBLOCKTS in copyprocess PFBLOCKTS is only set in blktimegetns when current-plug is non-NULL, and blkfinishplug clears it via blkflushplug before NULLing the plug pointer. copyprocess breaks the invariant by...

CVE-2026-64253

The CVE-2026-64253 issue affects the Linux kernel, specifically in kernel/fork within copy_process(). The bug allowed PF_BLOCK_TS to be inherited from the parent after the child’s plug pointer is reset to NULL, breaking the invariant that PF_BLOCK_TS can only be relied upon when current->plug ...