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)…
Does this matter?
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.
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.
- CVSS 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.46% probability · 73th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 7 June 2017
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- secalert@redhat.com
EPSS 1.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- 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/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.