CVE-2026-64137

The CVE-2026-64137 issue affects the Linux kernel CIFS client (SWN netlink). The vulnerability arises because CIFS_GENL_CMD_SWN_NOTIFY and related SWN multicast group handling lack proper capability checks, allowing an unprivileged local process to send witness notifications or join the multicast...

CVE-2026-64132 ipv6: ioam: refresh hdr pointer before ioam6_event()

In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: refresh hdr pointer before ioam6event Reported by Sashiko: In ipv6hopioam, the hdr pointer is initialized to point into the skb's linear data buffer. Later, the code calls skbensurewritable, which might reallocate the...

EUVD-2026-45799

In the Linux kernel, the following vulnerability has been resolved: ipv4: raw: reject IPHDRINCL packets with ihl ihl 4; err = -EINVAL; if iphlen length goto errorfree; if iphlen = sizeofiph / fix up saddr, totlen, id, csum, transportheader / It does not, however, reject ihl = sizeofiph" branch is...

CVE-2026-64114 ipv4: raw: reject IP_HDRINCL packets with ihl < 5

In the Linux kernel, the following vulnerability has been resolved: ipv4: raw: reject IPHDRINCL packets with ihl ihl 4; err = -EINVAL; if iphlen length goto errorfree; if iphlen = sizeofiph / fix up saddr, totlen, id, csum, transportheader / It does not, however, reject ihl = sizeofiph" branch is...

CVE-2026-64114

In the Linux kernel, the following vulnerability has been resolved: ipv4: raw: reject IPHDRINCL packets with ihl ihl 4; err = -EINVAL; if iphlen length goto errorfree; if iphlen = sizeofiph / fix up saddr, totlen, id, csum, transportheader / It does not, however, reject ihl = sizeofiph" branch is...

CVE-2026-64114

CVE-2026-64114 affects the Linux kernel’s IPv4 raw path. In raw_send_hdrinc(), the code validates that the caller-supplied IPv4 header fits the message length, but it does not reject headers with ihl &lt; 5 per RFC 791. As a result, locally constructed packets with an invalid Internet Header Leng...

CVE-2026-64114

In the Linux kernel, the following vulnerability has been resolved: ipv4: raw: reject IPHDRINCL packets with ihl ihl 4; err = -EINVAL; if iphlen length goto errorfree; if iphlen = sizeofiph / fix up saddr, totlen, id, csum, transportheader / It does not, however, reject ihl = sizeofiph" branch is...

EUVD-2026-45793

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix busy dentry used after unmounting Since commit 340cea84f691c "cifs: open files should not hold ref on superblock", cifs file only holds the dentry refcnt, the cifs file close workcfile-deferred could be executed after...

CVE-2026-64002

In the Linux kernel, the following vulnerability has been resolved: ipv4: free net-ipv4.sysctllocalreservedports after unregisternetsysctltable ipv4sysctlexitnet is currently freeing net-ipv4.sysctllocalreservedports too soon. Only after unregisternetsysctltable we can be sure no threads can...

CVE-2026-63992 tunnels: do not assume transport header in iptunnel_pmtud_check_icmp()

In the Linux kernel, the following vulnerability has been resolved: tunnels: do not assume transport header in iptunnelpmtudcheckicmp In some cases, iptunnelpmtudcheckicmp can be called while skb transport header is not set. This triggers an out-of-bound access, because typeofskb-transportheader0...

EUVD-2026-45742

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in rt6fillnode Sashiko reported this issue 1. Apply the same fix as commit f8d8ce1b515a "ipv6: fix possible infinite loop in fib6infousesdev". Writers holding tb6lock can listdelrcu&rt-fib6sibling...

CVE-2026-63924 ipv6: exthdrs: refresh nh pointer after ipv6_hop_jumbo()

In the Linux kernel, the following vulnerability has been resolved: ipv6: exthdrs: refresh nh pointer after ipv6hopjumbo ipv6hopjumbo calls pskbtrimrcsum, which can change skb pointers. Let's recompute nh pointer to make sure any change won't mess things up...

EUVD-2026-45693

In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6datagramrecvspecificctl builds IPV6HOPOPTS,DSTOPTS,RTHDR cmsgs and their IPV62292 legacy counterparts by trusting the on-wire hdrlen byte ptr1 when computing the...

EUVD-2026-45690

In the Linux kernel, the following vulnerability has been resolved: ip6: vti: Use ip6tnl.net in vti6changelink. ip netns add ns1 ip netns add ns2 ip -n ns1 link add vti6test type vti6 remote ::1 local ::2 key 7 ip -n ns1 link set vti6test netns ns2 ip -n ns2 link set vti6test type vti6 remote ::3...

CVE-2026-63912 xfrm: esp: restore combined single-frag length gate

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in espoutputhead before espoutputtail allocates the destination page frag. The head-side gate currently checks skb-datalen and...

EUVD-2026-45555

In the Linux kernel, the following vulnerability has been resolved: ieee802154: 6lowpan: only accept IPv6 packets in lowpanxmit The aoe driver or similar generates a non-IPv6 packet e.g., ETHPAOE and queues it for transmission via devqueuexmit on a 6LoWPAN interface configured by the user or test...

CVE-2026-63870

The CVE-2026-63870 issue affects linux ieee802154/6lowpan where non‑IPv6 packets (e.g., from an aoe driver) queued for transmission on a 6LoWPAN interface bypass the IPv6 check. The header creation function returns early and leaves lowpan_addr_info uninitialized in skb headroom; the transmit path...

CVE-2026-63865

In the Linux kernel, the following vulnerability has been resolved: bpf: Drop tasktoinode and inetconnestablished from lsm sleepable hooks bpflsmtasktoinode is called under rcureadlock and bpflsminetconnestablished is called from softirq context, so neither hook can be used by sleepable LSM...

CVE-2026-63829 net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink

In the Linux kernel, the following vulnerability has been resolved: net: ipgre: require CAPNETADMIN in the device netns for changelink A tunnel changelink operates on at most two netns, devnetdev and the tunnel link netns t-net. They differ once the device is created in or moved to a netns other...

PT-2026-61431

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the IPv4 raw socket implementation where the raw send hdrinc function fails to reject packets with an Internet Header Length ihl value of less than 5. According to RFC...