{"id":"CVE-2017-2671","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-2671","generatedAt":"2026-10-28T21:16:51.578Z","title":"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)…","description":"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.","published":"2017-04-05T06:59:00.000Z","lastModified":"2026-06-17T01:16:38.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":[],"affected":["linux/linux kernel"],"epss":{"score":0.01463,"percentile":0.73486,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":true,"firstPublished":"2017-06-07","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":42135,"kind":"exploit","title":"Linux Kernel - 'ping' Local Denial of Service","url":"https://www.exploit-db.com/exploits/42135","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/android/dos/42135.c","file":"exploits/android/dos/42135.c","published":"2017-06-07","added":"2017-06-07","updated":"2019-03-07","author":"Daniel Jiang","type":"dos","platform":"android","port":null,"verified":true,"codes":["CVE-2017-2671"],"tags":"Denial of Service (DoS)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/danieljiang0415/android_kernel_crash_poc/blob/ea761bde605588c9462db09f5bf416559ff32ed4/panic.c"}]},"verdict":{"level":"high","text":"A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 1.5%. Treat it as high on anything reachable from the internet."},"changes":[],"references":[{"url":"http://openwall.com/lists/oss-security/2017/04/04/8","tags":["Mailing List","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/97407","tags":["Third Party Advisory","VDB Entry"],"source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2017:1842","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2017:2077","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2017:2669","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2018:1854","source":"secalert@redhat.com"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://github.com/danieljiang0415/android_kernel_crash_poc","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://twitter.com/danieljiang0415/status/845116665184497664","tags":["Third Party Advisory"],"source":"secalert@redhat.com"},{"url":"https://usn.ubuntu.com/3754-1/","source":"secalert@redhat.com"},{"url":"https://www.exploit-db.com/exploits/42135/","source":"secalert@redhat.com"},{"url":"http://openwall.com/lists/oss-security/2017/04/04/8","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/97407","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:1842","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:2077","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2017:2669","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2018:1854","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=43a6684519ab0a6c52024b5e25322476cabad893","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/danieljiang0415/android_kernel_crash_poc","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893","tags":["Issue Tracking","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://twitter.com/danieljiang0415/status/845116665184497664","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3754-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/42135/","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-2671","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}