net: ipv6: flowlabel: defer exclusive option free until RCU teardown

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SUSE CVE-2026-31680

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prints fl-opt-optnflen when an option block is present. Exclusive...

CVE-2026-31680

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prints fl-opt-optnflen when an option block is present. Exclusive...

EUVD-2026-25647

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prints fl-opt-optnflen when an option block is present. Exclusive...

CVE-2026-31680

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prints fl-opt-optnflen when an option block is present. Exclusive...

CVE-2026-31680

The CVE concerns a race in the Linux kernel IPv6 flow label handling. In ip6fl_seq_show(), the global flowlabel hash is read under an RCU read lock, and an option block’s state fl->opt->opt_nflen may be printed when present. The current lifetime of the option state can end with fl->users...

CVE-2026-31680 net: ipv6: flowlabel: defer exclusive option free until RCU teardown

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prints fl-opt-optnflen when an option block is present. Exclusive...

CVE-2026-31680

In the Linux kernel, the following vulnerability has been resolved: net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prints fl-opt-optnflen when an option block is present. Exclusive...

PT-2026-35140

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the IPv6 flowlabel implementation. The function ip6fl seq show iterates through the global flowlabel hash under a seq-file RCU read-side lock and accesse...

Linux Distros Unpatched Vulnerability : CVE-2026-31680

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net: ipv6: flowlabel: defer exclusive option free until RCU teardown ip6flseqshow walks the global flowlabel hash under the seq-file RCU read-side lock and prin...

kernel: ipv6: use RCU in ip6_xmit()

A use-after-free flaw was found in ip6autoflowlabel in the Linux kernel's net/ipv6/ip6output.c code. In this flaw an attacker can cause a denial of service DoS attack...

EUVD-2019-9883

Malware in sbrugna...

EUVD-2019-8071

Malware in sbrugna...

CVE-2019-1324

An information disclosure vulnerability exists when the Windows TCP/IP stack improperly handles IPv6 flowlabel filled in packets, aka 'Windows TCP/IP Information Disclosure Vulnerability'...

SUSE CVE-2006-5619

The seqfile handling ip6flgetn function in ip6flowlabel.c in Linux kernel 2.6 up to 2.6.18-stable allows local users to cause a denial of service hang or oops via unspecified manipulations that trigger an infinite loop while searching for flowlabels...

kernel: The flow_dissector feature allows device tracking

A device tracking vulnerability was found in the flowdissector feature in the Linux kernel. This flaw occurs because the auto flowlabel of the UDP IPv6 packet relies on a 32-bit hashmd value as a secret, and jhash instead of siphash is used. The hashmd value remains the same starting from boot ti...

kernel: The flow_dissector feature allows device tracking

A device tracking vulnerability was found in the flowdissector feature in the Linux kernel. This flaw occurs because the auto flowlabel of the UDP IPv6 packet relies on a 32-bit hashmd value as a secret, and jhash instead of siphash is used. The hashmd value remains the same starting from boot ti...

CVE-2019-18282

The flowdissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash instead of siphash is used. The hashrn...

CVE-2019-1324

An information disclosure vulnerability exists when the Windows TCP/IP stack improperly handles IPv6 flowlabel filled in packets, aka 'Windows TCP/IP Information Disclosure Vulnerability'...

CVE-2019-1324

An information disclosure vulnerability exists when the Windows TCP/IP stack improperly handles IPv6 flowlabel filled in packets, aka 'Windows TCP/IP Information Disclosure Vulnerability'...