CVE-2026-74705

CVE-2026-74705 is a use-after-free vulnerability in the Linux kernel's UDP tunnel segmentation path. The function __skb_udp_tunnel_segment() saves a pointer to the UDP header before ensuring the tunnel header is in skb->head. If the subsequent skb_pull reallocates skb->head, the saved point...

EUVD-2026-64371

In the Linux kernel, the following vulnerability has been resolved: net: tap: set skb-dev before parsing virtio net header in tapgetuserxdp The commit 4f61f133f354 "net: tap: NULL pointer derefence in devparseheaderprotocol when skb-dev is null" fixed a crash in tapgetuser by assigning skb-dev...

EUVD-2026-64365

In the Linux kernel, the following vulnerability has been resolved: net: usb: ax88179178a: fix skb leak in ax88179txfixup When the interface has NETIFFSG enabled and skblinearize fails in ax88179txfixup, the function returns NULL without freeing the skb. usbnetstartxmit treats a NULL return from...

CVE-2026-74678 net: usb: ax88179_178a: fix skb leak in ax88179_tx_fixup()

In the Linux kernel, the following vulnerability has been resolved: net: usb: ax88179178a: fix skb leak in ax88179txfixup When the interface has NETIFFSG enabled and skblinearize fails in ax88179txfixup, the function returns NULL without freeing the skb. usbnetstartxmit treats a NULL return from...

CVE-2026-74665 net: fix skb length accounting after generic XDP frag adjustment

In the Linux kernel, the following vulnerability has been resolved: net: fix skb length accounting after generic XDP frag adjustment Generic XDP exposes non-linear skb fragments through an xdpbuff. If an XDP program adjusts the fragment area, bpfprogrungenericxdp copies xdpfragssize back to...

CVE-2026-74665 net: fix skb length accounting after generic XDP frag adjustment

In the Linux kernel, the following vulnerability has been resolved: net: fix skb length accounting after generic XDP frag adjustment Generic XDP exposes non-linear skb fragments through an xdpbuff. If an XDP program adjusts the fragment area, bpfprogrungenericxdp copies xdpfragssize back to...

EUVD-2026-64352

In the Linux kernel, the following vulnerability has been resolved: net: fix skb length accounting after generic XDP frag adjustment Generic XDP exposes non-linear skb fragments through an xdpbuff. If an XDP program adjusts the fragment area, bpfprogrungenericxdp copies xdpfragssize back to...

CVE-2026-74665

CVE-2026-74665 affects the Linux kernel 's generic XDP (eXpress Data Path) path. When an XDP program adjusts the fragment area, bpf_prog_run_generic_xdp() updates skb->data_len but leaves skb->len with the old fragment contribution. After a fragment shrink, skb_headlen() becomes larger than...

CVE-2026-74664 net: openvswitch: reallocate update replies for mismatched IDs

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reallocate update replies for mismatched IDs ovsflowcmdnew preallocates the optional reply skb before it takes ovsmutex and before it knows which existing flow will be updated. That is normally fine because the...

EUVD-2026-64351

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: reallocate update replies for mismatched IDs ovsflowcmdnew preallocates the optional reply skb before it takes ovsmutex and before it knows which existing flow will be updated. That is normally fine because the...

CVE-2026-74664

This vulnerability affects the Linux kernel's Open vSwitch (OVS) netlink flow command handling. The root cause is in ovs_flow_cmd_new(), which preallocates the reply skb sized from the request flow identifier. When a flow update request uses a UFID that misses the UFID lookup and falls back to th...

CVE-2026-74627 net: devmem: prevent net-iov / page mixing

In the Linux kernel, the following vulnerability has been resolved: net: devmem: prevent net-iov / page mixing We should either have netiov or page backed frags in a single skb, otherwise it blows up down the stack. Don't allow mixing in zerocopyfillskbfromdevmem...

EUVD-2026-64564

In the Linux kernel, the following vulnerability has been resolved: net: devmem: prevent net-iov / page mixing We should either have netiov or page backed frags in a single skb, otherwise it blows up down the stack. Don't allow mixing in zerocopyfillskbfromdevmem...

CVE-2026-74627 net: devmem: prevent net-iov / page mixing

In the Linux kernel, the following vulnerability has been resolved: net: devmem: prevent net-iov / page mixing We should either have netiov or page backed frags in a single skb, otherwise it blows up down the stack. Don't allow mixing in zerocopyfillskbfromdevmem...

CVE-2026-74627

CVE-2026-74627 affects the Linux kernel's net: devmem component. The root cause is improper mixing of net_iov and page-backed fragments within a single skb in the zerocopy_fill_skb_from_devmem() function, which causes a crash downstream in the stack. Red Hat classifies the impact as Denial of Ser...

CVE-2026-74620

This Linux kernel vulnerability affects the net/sched subsystem, specifically the act_gact and act_police traffic control actions. The fallback control actions (TCA_GACT_PROB.paction and TCA_POLICE_RESULT) bypass the range check in tcf_action_check_ctrlact(), allowing user space to store TC_ACT_C...

CVE-2026-74612 veth: fix skb length accounting after XDP frag adjustment

In the Linux kernel, the following vulnerability has been resolved: veth: fix skb length accounting after XDP frag adjustment veth exposes non-linear skb fragments through an xdpbuff. If an XDP program adjusts the fragment area, vethxdprcvskb copies xdpfragssize back to skb-datalen but leaves...

EUVD-2026-64549

In the Linux kernel, the following vulnerability has been resolved: veth: fix skb length accounting after XDP frag adjustment veth exposes non-linear skb fragments through an xdpbuff. If an XDP program adjusts the fragment area, vethxdprcvskb copies xdpfragssize back to skb-datalen but leaves...

CVE-2026-74612 veth: fix skb length accounting after XDP frag adjustment

In the Linux kernel, the following vulnerability has been resolved: veth: fix skb length accounting after XDP frag adjustment veth exposes non-linear skb fragments through an xdpbuff. If an XDP program adjusts the fragment area, vethxdprcvskb copies xdpfragssize back to skb-datalen but leaves...

CVE-2026-74612

CVE-2026-74612 is a CRITICAL (CVSS 10.0) flaw in the Linux kernel's veth component. When an XDP program shrinks the fragment area, veth_xdp_rcv_skb() fails to update skb->len, causing skb_headlen() to exceed the actual linear area. In the UDP receive path, __skb_datagram_iter() then copies 102...