kernel: netfilter: nft_inner: Fix IPv6 inner_thoff desync

A flaw was found in the Linux kernel's netfilter subsystem, specifically within the nftinner module. This vulnerability arises from an incorrect handling of IPv6 inner packet processing, where the transport header offset innerthoff becomes desynchronized from the Layer 4 protocol l4proto. A remot...

kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()

A flaw was found in the Linux kernel's IPv6 ICMP error generation. A remote attacker could send a specially crafted IPv4 ICMP error packet with a Common Internet Protocol Security Option CIPSO IP option. This could lead to incorrect handling of packet control block data when generating an IPv6 IC...

kernel: netfilter: flowtable: strictly check for maximum number of actions

A flaw was found in the Netfilter flowtable component of the Linux kernel. This vulnerability occurs because the system does not strictly check the maximum number of hardware offload actions for IPv6, allowing it to process more actions than supported. This could potentially lead to system...

CVE-2026-74562

A flaw was found in the Linux kernel's nexthop component. A race condition exists where internal lists are walked without proper locking during nexthop replacement and route deletion. A local attacker could exploit this by concurrently manipulating IPv6 routes, leading to a use-after-free...

CVE-2026-74579

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftpayload: fix mask build for partial field offload nftpayloadoffloadmask builds the offload match mask for a payload expression that covers only part of a header field. For a partial IPv6 address match fieldlen = 16,...

BIT-MASTODON-2026-72916 Mastodon: SSRF Protection Bypass via IPv4-compatible IPv6 Addresses

Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0, PrivateAddressCheck.privateaddress? in app/lib/privateaddresscheck.rb normalized IPv4-mapped IPv6 addresses but did not recognize IPv4-compatible IPv6 addresses with...

CVE-2026-74579 netfilter: nft_payload: fix mask build for partial field offload

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftpayload: fix mask build for partial field offload nftpayloadoffloadmask builds the offload match mask for a payload expression that covers only part of a header field. For a partial IPv6 address match fieldlen = 16,...

CVE-2026-74579

CVE-2026-74579 is a vulnerability in the Linux kernel 's netfilter subsystem, specifically in the nft_payload_offload_mask() function within nft_payload.c. When building an offload match mask for a partial IPv6 address match (e.g., field_len=16, priv_len=1), the code performs a shift of 1 <

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099925)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099925 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix out-of-bounds access in ipv6findtlv optlen is fetched without checking whether there is...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-100114)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100114 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 head...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100749)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100749 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: sit: reload inner IPv6 header after GSO offloads ipip6tunnelxmit caches the inner IPv6 head...

The vulnerability of the fib6_add_rt2node() function in the net/ipv6/ip6_fib.c module of the IPv6 protocol implementation in the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the fib6addrt2node function in the net/ipv6/ip6fib.c module of the Linux operating system’s IPv6 kernel implementation is related to state management errors. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility ...

CVE-2026-73058

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address :: in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface a...

EUVD-2026-59944

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address :: in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface a...

CVE-2026-73058

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address :: in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface a...

CVE-2026-73058

Stoatchat before 0.15.0 is affected by an SSRF bypass: the IPv6 unspecified address (::) is not blocked, allowing unauthenticated attackers to access internal content via /proxy and /embed. The issue permits crafting IPv6 literal requests to reach loopback services; no exploitation details are pr...

CVE-2026-73058 stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address :: in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface a...

CVE-2026-73058 stoatchat before 0.15.0 SSRF via IPv6 unspecified address bypass

stoatchat versions before 0.15.0 fail to block the IPv6 unspecified address :: in the SSRF blocklist, allowing unauthenticated attackers to bypass protections via the /proxy and /embed endpoints. Attackers can craft requests using IPv6 literal syntax to access services on the loopback interface a...

SUSE CVE-2026-74561

In the Linux kernel, the following vulnerability has been resolved: nexthop: avoid unlocked f6ilist walk in nhrtcacheflush nhrtcacheflush walks nh-f6ilist during an RTNL-serialized nexthop replace without holding nh-lock, racing the unlocked IPv6 route add/delete that mutate the list under nh-loc...

CVE-2026-74561

In the Linux kernel, the following vulnerability has been resolved: nexthop: avoid unlocked f6ilist walk in nhrtcacheflush nhrtcacheflush walks nh-f6ilist during an RTNL-serialized nexthop replace without holding nh-lock, racing the unlocked IPv6 route add/delete that mutate the list under nh-loc...