CVE-2017-2671

The ping_unhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that disconnect function calls are safe, which allows local users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a socket system call.

• http://openwall.com/lists/oss-security/2017/04/04/8Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/97407Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:1842
• https://access.redhat.com/errata/RHSA-2017:2077
• https://access.redhat.com/errata/RHSA-2017:2669
• https://access.redhat.com/errata/RHSA-2018:1854
• https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893Issue Tracking, Patch, Third Party Advisory
• https://github.com/danieljiang0415/android_kernel_crash_pocThird Party Advisory
• https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893Issue Tracking, Patch, Third Party Advisory
• https://twitter.com/danieljiang0415/status/845116665184497664Third Party Advisory
• https://usn.ubuntu.com/3754-1/
• https://www.exploit-db.com/exploits/42135/
• http://openwall.com/lists/oss-security/2017/04/04/8Mailing List, Third Party Advisory
• http://www.securityfocus.com/bid/97407Third Party Advisory, VDB Entry
• https://access.redhat.com/errata/RHSA-2017:1842
• https://access.redhat.com/errata/RHSA-2017:2077
• https://access.redhat.com/errata/RHSA-2017:2669
• https://access.redhat.com/errata/RHSA-2018:1854
• https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893Issue Tracking, Patch, Third Party Advisory
• https://github.com/danieljiang0415/android_kernel_crash_pocThird Party Advisory
• https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893Issue Tracking, Patch, Third Party Advisory
• https://twitter.com/danieljiang0415/status/845116665184497664Third Party Advisory
• https://usn.ubuntu.com/3754-1/
• https://www.exploit-db.com/exploits/42135/

Published

Apr 5, 2017

Last Modified

Jun 17, 2026

Status

Modified

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