CVE-2026-80906

CVE-2026-80906 affects the Linux kernel net: packet subsystem. In packet_parse_headers(), when handling a VLAN-tagged frame, skb_set_network_header() advances the network header past the VLAN tag before skb_probe_transport_header() is called. This leaves skb->protocol set to the outer VLAN Eth...

CVE-2026-80906 net: packet: fix wrong transport_header when sending VLAN-tagged frame

In the Linux kernel, the following vulnerability has been resolved: net: packet: fix wrong transportheader when sending VLAN-tagged frame In packetparseheaders, when processing a VLAN-tagged frame, skbsetnetworkheader is called to advance networkheader past the VLAN tag to the inner protocol...

CVE-2026-80905 net: tap: fix wrong transport_header when sending VLAN-tagged frame

In the Linux kernel, the following vulnerability has been resolved: net: tap: fix wrong transportheader when sending VLAN-tagged frame In tapgetuserxdp, when processing a VLAN-tagged frame e.g. ETHP8021Q, skbsetnetworkheader is called first to advance networkheader past the VLAN tag to the inner...

EUVD-2026-71664

In the Linux kernel, the following vulnerability has been resolved: net: tap: fix wrong transportheader when sending VLAN-tagged frame In tapgetuserxdp, when processing a VLAN-tagged frame e.g. ETHP8021Q, skbsetnetworkheader is called first to advance networkheader past the VLAN tag to the inner...

Astra Linux – Vulnerability found in Linux 5.15, Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: ppp: Associating skb with a device at tx. Syzkaller triggered a flow dissector warning with the following code: c r0 = openat$ppp0xffffffffffffff9c, &0x7f0000000000, 0xc0802, 0x0 ioctl$PPPIOCNEWUNITr0, 0xc004743e,...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bonding: A net pointer to skbflowdissect must be provided. After the code “net: plumb network namespace into skbflowdissect”, we need to provide a net pointer to skbflowdissect, either through skb-dev, skb-sk, or a user-provided...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerabilities have been resolved: net: iptunnel: prevents perpetual headroom growth The issue occurred due to the following sequence of events: BUG: KASAN: use-after-free in skbflowdissect+0x19d1/0x7a50 net/core/flowdissector.c:1170 A size 1 byte read was...

CVE-2026-72444

CVE-2026-72444 relates to the Linux kernel flow_dissector which could read 12 bytes from eth_hdr(skb) when FLOW_DISSECTOR_KEY_ETH_ADDRS is requested, potentially operating on non-Ethernet or pathologic mac_header states (e.g., TUN in L3 mode). The fix gates the copy to only Ethernet devices (dev-...

EUVD-2026-59343

In the Linux kernel, the following vulnerability has been resolved: flowdissector: check device type before reading ETHADDRS skbflowdissect unconditionally reads 12 bytes from ethhdrskb when FLOWDISSECTORKEYETHADDRS is requested. This assumes the skb has a valid Ethernet header at macheader, whic...

Linux Distros Unpatched Vulnerability : CVE-2026-72444

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - flowdissector: check device type before reading ETHADDRS skbflowdissect unconditionally reads 12 bytes from ethhdrskb when FLOWDISSECTORKEYETHADDRS is requested...

PT-2026-72632

In the Linux kernel, the following vulnerability has been resolved: flow dissector: check device type before reading ETH ADDRS skb flow dissect unconditionally reads 12 bytes from eth hdrskb when FLOW DISSECTOR KEY ETH ADDRS is requested. This assumes the skb has a valid Ethernet header at mac...

The vulnerability in the net/core/flow_dissector.c module of the Linux operating system allows a hacker to cause a service failure.

The vulnerability in the net/core/flowdissector.c module of the Linux operating system is related to data type mixing errors. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: flowdissector: Do not dissect PPPoE PFC frames. RFC 2516, Section 7 states that Protocol Field Compression PFC is NOT recommended for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...

flow_dissector: do not dissect PPPoE PFC frames

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SUSE CVE-2026-46306

In the Linux kernel, the following vulnerability has been resolved: flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...

Linux Distros Unpatched Vulnerability : CVE-2026-46306

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd doe...

CVE-2026-46306

A flaw was found in the Linux kernel's flow dissector. This vulnerability allows a remote attacker to cause a Denial of Service DoS by sending a specially crafted Point-to-Point Protocol over Ethernet PPPoE Protocol Field Compression PFC frame to an affected system. The incorrect processing of...

CVE-2026-46306

In the Linux kernel, the following vulnerability has been resolved: flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...

CVE-2026-46306

In the Linux kernel, the following vulnerability has been resolved: flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...

UBUNTU-CVE-2026-46306

In the Linux kernel, the following vulnerability has been resolved: flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...