CVE-2026-54452 safeurl: Missing IPv6 CIDR Ranges in Blocklist

safeurl is a server-side request forgery protection library. Prior to 0.2.4, the privateNetworks list in ip.go omits the IPv6 ranges 64:ff9b:1::/48, 5f00::/16, 3fff::/20, and 100:0:0:1::/64. When an application enables IPv6 with EnableIPv6true, an attacker-controlled destination in one of these...

EUVD-2026-77630

safeurl is a server-side request forgery protection library. Prior to 0.2.4, the privateNetworks list in ip.go omits the IPv6 ranges 64:ff9b:1::/48, 5f00::/16, 3fff::/20, and 100:0:0:1::/64. When an application enables IPv6 with EnableIPv6true, an attacker-controlled destination in one of these...

CVE-2026-54452

safeurl (github.com/doyensec/safeurl), a Go SSRF protection library, has an incomplete IPv6 private network blocklist in ip.go prior to v0.2.4 . Four newly assigned CIDR ranges are omitted: 64:ff9b:1::/48 (NAT64, RFC 8215), 5f00::/16 (Segment Routing SIDs, RFC 9602), 3fff::/20 (documentation, RFC...

CVE-2026-54452 safeurl: Missing IPv6 CIDR Ranges in Blocklist

safeurl is a server-side request forgery protection library. Prior to 0.2.4, the privateNetworks list in ip.go omits the IPv6 ranges 64:ff9b:1::/48, 5f00::/16, 3fff::/20, and 100:0:0:1::/64. When an application enables IPv6 with EnableIPv6true, an attacker-controlled destination in one of these...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: prevented possible UAF in ip6xmit If skbexpandhead returns NULL, the skb has been freed, and the associated dst/idev may also have been freed. We must use rcureadlock to prevent possible UAF...

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

In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid possible NULL deref in rt6uncachedlistflushdev Blamed commit accidentally removed a check for rt-rt6iidev being NULL, as spotted by syzbot: Oops: general protection fault, probably for non-canonical address...

Astra Linux – Vulnerability in Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: netfilter: nfrejectipv6: fixed a potential crash in nfsendreset6 I received a report from syzbot regarding a crash in nfsendreset6 without any detailed reproduction steps. I believe the issue lies in dev-hardheaderlen being se...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: mcast: added RCU protection to mldnewpack The mldnewpack function can be called without holding RTNL or RCU. It should be noted that we can no longer use sockallocsendskb, because ipv6.igmpsk relies on GFPKERNEL...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fixed a potential refcount underflow for idev. In addrconfmodrstimer, the reference to idev depends on whether rstimer is not pending. Therefore, the timeout of rstimer was modified. There is a time gap in 1 during...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ipvti: A potential issue related to slab-use-after-free has been fixed in decodesession6. When the ipvti device is set as a qdisc of the sfb type, the cb field of the sent skb may be modified during enqueueing. This can lead to a...

Astra Linux – Vulnerability in Linux 5.10

A flaw was discovered in the IPv6 module of the Linux kernel. The arg.result parameter was not used consistently in fib6rulelookup; sometimes rt6info was used, and other times fib6info. This issue was not accounted for in other parts of the code, where rt6info was expected to be used...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix out-of-bounds read when setting HMAC data. The SRv6 layer allows defining HMAC data that can later be used to sign IPv6 Segment Routing Headers. This configuration is realized through netlink using four attributes:...

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

In the Linux kernel, the following vulnerability has been resolved: calipso: fixed a memory leak in netlblcalipsoaddpass If IPv6 support is disabled at boot ipv6.disable=1, the calipsoinit - netlblcalipsoopsregister function is not called, and the netlblcalipsoopsget function always returns NULL...

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

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: sr – fixed possible use-after-free and nullptrderef issues. The pernet operations structure for the subsystem must be registered before registering the generic netlink family...

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

In the Linux kernel, the following vulnerability has been resolved: ipv6: fixed a race condition between ipv6getifaddr and ipv6deladdr Although ipv6getifaddr operates under the RCU lock, it still allows hlistforeachentryrcu to return an item that has already been removed from the list. The memory...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ipv6: fixed a panic that occurred when forwarding a packet without an in6 dev associated with the interface. Kongweibin reported a kernel panic in ip6forward, when the input interface does not have an in6 dev associated. The...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ipv6: icmp: clearing the skb2-cb array in ip6errgenicmpv6unreach According to Sashiko’s AI-review, the following issues were observed: 1. In ip6errgenicmpv6unreach, skb represents an outer IPv4 ICMP error packet. Its cb contains ...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: avoided use-after-free in ip6fragment The blamed commit claimed that rcureadlock was held by the callers of ip6fragment. It seems not to always be true, at least for the UDP stack. syzbot reported: BUG: KASAN:...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ipv6: Fixed signed integer overflow in ip6appenddata. Resolved UBSAN overflow checks; this warning is also resolved. The variable length was changed to sizet to fix the issue. UBSAN: Signed-integer overflow in...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: ipv6: Fixed an issue of signed integer overflow in l2tpip6sendmsg. When len = INTMAX - transhdrlen, the value of ulen = len + transhdrlen will cause an overflow. To address this issue, we can follow the approach used by udpv6 and...