CVE-2026-74266

The CVE-2026-74266 family documents a Linux kernel vulnerability in net/sched sch_dualpi2 where qdisc_tree_reduce_backlog is invoked during peek before the queue length (qlen) is restored. This causes a race where, if qlen drops to zero but a packet remains, the parent’s qlen_notify callback can ...

CVE-2026-74266 net/sched: sch_dualpi2: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever dualpi2 drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

EUVD-2026-59413

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever dualpi2 drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

CVE-2026-74266

In the Linux kernel, the following vulnerability has been resolved: net/sched: schdualpi2: Do not call qdisctreereducebacklog during peek before restoring qlen Whenever dualpi2 drops packets during peek, it calls qdisctreereducebacklog. An issue arises because it calls qdisctreereducebacklog befo...

EUVD-2026-59411

In the Linux kernel, the following vulnerability has been resolved: net: watchdog: fix refcount tracking races Blamed commit converted the untracked devhold/devput calls in the watchdog code to use the tracked devholdtrack/devputtrack which were later renamed/interfaced to netdevhold and netdevpu...

CVE-2026-74264

CVE-2026-74264 affects the Linux kernel watchdog code. The root issue is a race in refcount tracking between netdev_watchdog_up() and dev_watchdog(), caused by using dev->watchdog_dev_tracker without proper synchronization, which could lead to a use-after-free and list corruption (list_del cor...

CVE-2026-74264 net: watchdog: fix refcount tracking races

In the Linux kernel, the following vulnerability has been resolved: net: watchdog: fix refcount tracking races Blamed commit converted the untracked devhold/devput calls in the watchdog code to use the tracked devholdtrack/devputtrack which were later renamed/interfaced to netdevhold and netdevpu...

CVE-2026-74264

In the Linux kernel, the following vulnerability has been resolved: net: watchdog: fix refcount tracking races Blamed commit converted the untracked devhold/devput calls in the watchdog code to use the tracked devholdtrack/devputtrack which were later renamed/interfaced to netdevhold and netdevpu...

CVE-2026-74264 net: watchdog: fix refcount tracking races

In the Linux kernel, the following vulnerability has been resolved: net: watchdog: fix refcount tracking races Blamed commit converted the untracked devhold/devput calls in the watchdog code to use the tracked devholdtrack/devputtrack which were later renamed/interfaced to netdevhold and netdevpu...

CVE-2026-74257 sockmap: Fix use-after-free in udp_bpf_recvmsg()

In the Linux kernel, the following vulnerability has been resolved: sockmap: Fix use-after-free in udpbpfrecvmsg syzbot reported use-after-free of struct skmsg in skmsgrecvmsg. 0 skmsgrecvmsg peeks skmsg from psock-ingressmsg under a lock, but its processing is lockless. Thus, skmsgrecvmsg must b...

CVE-2026-74257

CVE-2026-74257 stems from a use-after-free in the Linux kernel sockmap path (udp_bpf_recvmsg) where sk_msg_recvmsg() can touch the same sk_msg when multiple threads race. The mitigation described in connected docs is to serialize sk_msg_recvmsg() by callers, specifically by adding a lock around u...

EUVD-2026-59404

In the Linux kernel, the following vulnerability has been resolved: sockmap: Fix use-after-free in udpbpfrecvmsg syzbot reported use-after-free of struct skmsg in skmsgrecvmsg. 0 skmsgrecvmsg peeks skmsg from psock-ingressmsg under a lock, but its processing is lockless. Thus, skmsgrecvmsg must b...

CVE-2026-74257

In the Linux kernel, the following vulnerability has been resolved: sockmap: Fix use-after-free in udpbpfrecvmsg syzbot reported use-after-free of struct skmsg in skmsgrecvmsg. 0 skmsgrecvmsg peeks skmsg from psock-ingressmsg under a lock, but its processing is lockless. Thus, skmsgrecvmsg must b...

CVE-2026-74257 sockmap: Fix use-after-free in udp_bpf_recvmsg()

In the Linux kernel, the following vulnerability has been resolved: sockmap: Fix use-after-free in udpbpfrecvmsg syzbot reported use-after-free of struct skmsg in skmsgrecvmsg. 0 skmsgrecvmsg peeks skmsg from psock-ingressmsg under a lock, but its processing is lockless. Thus, skmsgrecvmsg must b...

CVE-2026-74256

The CVE-2026-74256 family affects the Linux kernel’s BPF sockmap path, where bpf_msg_pop_data() bounds checks used 32-bit arithmetic on start/len. An unsigned-to-signed overflow could allow an out-of-range start/len, causing the pop loop to walk past scatterlist end and trigger put_page on an emp...

EUVD-2026-59403

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: fix integer overflow in bpfmsgpopdata bounds check start and len are u32, so u64 last = start + len; evaluates start + len in 32-bit and wraps before storing it in last. The bounds check if start = offset + l || las...

CVE-2026-74256 bpf, sockmap: fix integer overflow in bpf_msg_pop_data() bounds check

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: fix integer overflow in bpfmsgpopdata bounds check start and len are u32, so u64 last = start + len; evaluates start + len in 32-bit and wraps before storing it in last. The bounds check if start = offset + l || las...

CVE-2026-74256 bpf, sockmap: fix integer overflow in bpf_msg_pop_data() bounds check

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: fix integer overflow in bpfmsgpopdata bounds check start and len are u32, so u64 last = start + len; evaluates start + len in 32-bit and wraps before storing it in last. The bounds check if start = offset + l || las...

CVE-2026-74256

In the Linux kernel, the following vulnerability has been resolved: bpf, sockmap: fix integer overflow in bpfmsgpopdata bounds check start and len are u32, so u64 last = start + len; evaluates start + len in 32-bit and wraps before storing it in last. The bounds check if start = offset + l || las...

CVE-2026-72487 PCI: Check ROM header and data structure addr before accessing

In the Linux kernel, the following vulnerability has been resolved: PCI: Check ROM header and data structure addr before accessing We meet a crash when running stress-ng on x8664 machine: BUG: unable to handle page fault for address: ffa0000007f40000 RIP: 0010:pcigetromsize+0x52/0x220 Call Trace:...