CVE-2018-17182
The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows.
Does this matter?
A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 3.2%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
Description
An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.21% probability · 88th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 26 September 2018
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel · canonical/ubuntu linux · debian/debian linux · netapp/active iq performance analytics services · netapp/element software
- Source
- cve@mitre.org
EPSS 3.2% 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://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2Patch, Third Party Advisory
- http://www.securityfocus.com/bid/105417Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/106503Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041748Patch, Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3656Third Party Advisory
- https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20190204-0001/Patch, Third Party Advisory
- https://usn.ubuntu.com/3776-1/Third Party Advisory
- https://usn.ubuntu.com/3776-2/Third Party Advisory
- https://usn.ubuntu.com/3777-1/Third Party Advisory
- https://usn.ubuntu.com/3777-2/Third Party Advisory
- https://usn.ubuntu.com/3777-3/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4308Third Party Advisory
- https://www.exploit-db.com/exploits/45497/Exploit, Third Party Advisory, VDB Entry
- https://www.openwall.com/lists/oss-security/2018/09/18/4Mailing List, Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2Patch, Third Party Advisory
- http://www.securityfocus.com/bid/105417Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/106503Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1041748Patch, Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3656Third Party Advisory
- https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlThird Party Advisory
- https://security.netapp.com/advisory/ntap-20190204-0001/Patch, Third Party Advisory
- https://usn.ubuntu.com/3776-1/Third Party Advisory
- https://usn.ubuntu.com/3776-2/Third Party Advisory
- https://usn.ubuntu.com/3777-1/Third Party Advisory
- https://usn.ubuntu.com/3777-2/Third Party Advisory
- https://usn.ubuntu.com/3777-3/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4308Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.