EUVD-2026-28682

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

EUVD-2026-28562

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: prevent RCU stalls in kasanreleasevmallocnode When CONFIGPAGEOWNER is enabled, freeing KASAN shadow pages during vmalloc cleanup triggers expensive stack unwinding that acquires RCU read locks. Processing a large...

CVE-2026-43385

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

CVE-2026-43376

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43402

In the Linux kernel, the following vulnerability has been resolved: kthread: consolidate kthread exit paths to prevent use-after-free Guillaume reported crashes via corrupted RCU callback function pointers during KUnit testing. The crash was traced back to the pidfs rhashtable conversion which...

UBUNTU-CVE-2026-43402

In the Linux kernel, the following vulnerability has been resolved: kthread: consolidate kthread exit paths to prevent use-after-free Guillaume reported crashes via corrupted RCU callback function pointers during KUnit testing. The crash was traced back to the pidfs rhashtable conversion which...

UBUNTU-CVE-2026-43376

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free by using callrcu for oplockinfo ksmbd currently frees oplockinfo immediately using kfree, even though it is accessed under RCU read-side critical sections in places like opinfoget and procshowfiles. Sinc...

CVE-2026-43385

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

UBUNTU-CVE-2026-43385

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

CVE-2026-43402 kthread: consolidate kthread exit paths to prevent use-after-free

In the Linux kernel, the following vulnerability has been resolved: kthread: consolidate kthread exit paths to prevent use-after-free Guillaume reported crashes via corrupted RCU callback function pointers during KUnit testing. The crash was traced back to the pidfs rhashtable conversion which...

CVE-2026-43402 kthread: consolidate kthread exit paths to prevent use-after-free

In the Linux kernel, the following vulnerability has been resolved: kthread: consolidate kthread exit paths to prevent use-after-free Guillaume reported crashes via corrupted RCU callback function pointers during KUnit testing. The crash was traced back to the pidfs rhashtable conversion which...

CVE-2026-43385

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

CVE-2026-43385 net: Fix rcu_tasks stall in threaded busypoll

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

CVE-2026-43385

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

CVE-2026-43385 net: Fix rcu_tasks stall in threaded busypoll

In the Linux kernel, the following vulnerability has been resolved: net: Fix rcutasks stall in threaded busypoll I was debugging a NIC driver when I noticed that when I enable threaded busypoll, bpftrace hangs when starting up. dmesg showed: rcutaskswaitgp: rcutasks grace period number 85 since...

CVE-2026-43379 ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43379 ksmbd: fix use-after-free in smb_lazy_parent_lease_break_close()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43379

CVE-2026-43379 affects ksmbd (Linux kernel) with a use-after-free in smb_lazy_parent_lease_break_close. The opinfo pointer obtained via rcu_dereference(fp->f_opinfo) is accessed after rcu_read_unlock(), creating a race where the memory could be freed by a concurrent writer before subsequent de...

CVE-2026-43379

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smblazyparentleasebreakclose opinfo pointer obtained via rcudereferencefp-fopinfo is being accessed after rcureadunlock has been called. This creates a race condition where the memory could be freed b...

CVE-2026-43378 smb: server: fix use-after-free in smb2_open()

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix use-after-free in smb2open The opinfo pointer obtained via rcudereferencefp-fopinfo is dereferenced after rcureadunlock, creating a use-after-free window...