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.

CVSS v3.0 NVD

5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 NVD

4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS

1.46% chance of exploitation in the next 30 days, 73rd percentile

Published

2017-04-05

Updated

2024-08-05

Proof-of-concept exploits (1)

• homjxi0e/CVE-2017-26710★ · 2017-06-08

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/42135

Security advisories

• http://openwall.com/lists/oss-security/2017/04/04/8
• http://www.securityfocus.com/bid/97407
• https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/net/ipv4/ping.c?id=4…
• danieljiang0415/android_kernel_crash_poc
• torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893
• https://twitter.com/danieljiang0415/status/845116665184497664
• https://usn.ubuntu.com/3754-1

References

• CVE Record
• NVD entry

Related

• CVE-2016-7255
• CVE-2017-0108
• CVE-2017-1000367
• CVE-2017-3078
• CVE-2017-3881
• CVE-2017-5638