CVE-2026-68426 xfrm: fix stale skb->prev after async crypto steals a GSO segment

In the Linux kernel, the following vulnerability has been resolved: xfrm: fix stale skb-prev after async crypto steals a GSO segment skbgsosegment leaves the segment list head with -prev pointing at the last segment, an invariant validatexmitskblist relies on when it sets its tail pointer tail =...

CVE-2026-68405 wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: free APVLAN bcbuf SKBs outside IRQ lock ieee80211dostop removes APVLAN packets from the parent AP ps-bcbuf while holding ps-bcbuf.lock with IRQs disabled. It then calls ieee80211freetxskb before dropping the lock...

EUVD-2026-55469

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: fncm: validate datagram bounds in ncmunwrapntb When unpacking host-supplied NTBs, ncmunwrapntb checks datagram length against framemax but does not verify that the datagram fits within the declared block length...

EUVD-2026-55450

In the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: fix buffer overflow in rxstream failover path The failover continuation in carl9170rxstream copies the full tlen from the second USB transfer instead of capping at rxfailovermissing bytes. When both transfers are...

CVE-2026-68339

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: validate Realtek vendor event length btusbrecveventrealtek reads the event code at data0 and the Realtek subevent code at data2 before deciding whether to consume a vendor event as a coredump. For example, the...

CVE-2026-68302

CVE-2026-68302 is a Linux kernel issue in the Adjacency Management Protocol (AMT) implementation. Several AMT receive/transmit paths cache skb header pointers (ip_hdr, ipv6_hdr, eth_hdr, or AMT header) and a later helper can reallocate the skb head, making cached pointers invalid (use-after-free)...

CVE-2026-68302 amt: re-read skb header pointers after every pull

In the Linux kernel, the following vulnerability has been resolved: amt: re-read skb header pointers after every pull Several AMT receive and transmit paths cache a pointer into the skb head iphdr, ipv6hdr, ethhdr or the AMT message header and then call a helper that can reallocate that head befo...

CVE-2026-68287 drop_monitor: fix size calculations for 64-bit attributes

In the Linux kernel, the following vulnerability has been resolved: dropmonitor: fix size calculations for 64-bit attributes netdmpacketreportfill and netdmhwpacketreportfill use nlaputu6464bit to append 64-bit attributes NETDMATTRPC and NETDMATTRTIMESTAMP. On 32-bit architectures without...

EUVD-2026-55388

In the Linux kernel, the following vulnerability has been resolved: dropmonitor: fix size calculations for 64-bit attributes netdmpacketreportfill and netdmhwpacketreportfill use nlaputu6464bit to append 64-bit attributes NETDMATTRPC and NETDMATTRTIMESTAMP. On 32-bit architectures without...

CVE-2026-68170 mptcp: fix stale skb->sk reference on subflow close

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix stale skb-sk reference on subflow close The backlog list is updated by mptcpdataready under mptcpdatalock. The cleanup of backlog references to a closing subflow, however, was performed in mptcpclosessk, before...

CVE-2026-68170

CVE-2026-68170, affecting Linux kernel MPTCP, describes a use-after-free risk caused by a stale backlog backlog entry referencing a closing subflow. The issue arises because backlog cleanup was performed in mptcp_close_ssk() without holding the ssk lock or mptcp_data_lock(), while concurrent RX p...

CVE-2026-68144

The CVE-2026-68144 issue is in the Linux kernel Phonet subsystem (pep_get_sb). The root cause is use-after-free caused when pep_get_sb() doesn’t account for skb data relocation by pskb_may_pull(), leading to a stale pointer dereference. Reproductions via KASAN show slab-use-after-free in pep_get_...

CVE-2026-68136 net: gro: fix double aggregation of flush-marked skbs

In the Linux kernel, the following vulnerability has been resolved: net: gro: fix double aggregation of flush-marked skbs Commit 0ab03f353d36 "net-gro: Fix GRO flush when receiving a GSO packet." added a flush check to skbgroreceive, but skbgroreceivelist lacks the same validation. As a result,...

EUVD-2026-55516

In the Linux kernel, the following vulnerability has been resolved: net: hip04: fix RX buffer leak on buildskb failure When buildskb fails in hip04rxpoll, the driver jumps to the refill path without releasing the current RX buffer and its DMA mapping. Installing a replacement buffer then overwrit...

EUVD-2026-55504

In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix GSO userspace truncation underflow OVSACTIONATTRTRUNC currently stores a delta from the original skb length in OVSCBskb-cutlen. When a later userspace action segments a GSO skb, queuegsopackets reuses that delta...

CVE-2026-68123

The CVE-2026-68123 issue affects the Linux kernel Open vSwitch path handling GSO packets in userspace. OVS_ACTION_ATTR_TRUNC previously stored a delta from the original skb length in OVS_CB(skb)->cutlen, and when a later segmenting action processed a GSO skb, queue_gso_packets() reused that de...

CVE-2026-68121 pppoe: reload header pointer after dev_hard_header()

In the Linux kernel, the following vulnerability has been resolved: pppoe: reload header pointer after devhardheader pppoesendmsg saves a pointer to the PPPoE header before calling devhardheader. Device header callbacks are allowed to reallocate the skb head, invalidating pointers into it. This c...

CVE-2026-68121 pppoe: reload header pointer after dev_hard_header()

In the Linux kernel, the following vulnerability has been resolved: pppoe: reload header pointer after devhardheader pppoesendmsg saves a pointer to the PPPoE header before calling devhardheader. Device header callbacks are allowed to reallocate the skb head, invalidating pointers into it. This c...

EUVD-2026-55502

In the Linux kernel, the following vulnerability has been resolved: pppoe: reload header pointer after devhardheader pppoesendmsg saves a pointer to the PPPoE header before calling devhardheader. Device header callbacks are allowed to reallocate the skb head, invalidating pointers into it. This c...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: net/sched: actskbedit: fix divide-by-zero in tcfskbedithash Commit 38a6f0865796 “net: sched: support hash selecting tx queue” added support for SKBEDITFTXQSKBHASH. The inclusive range size is computed as follows: mappingmod =...