CVE-2018-17182

high-risk
Published 2018-09-19

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.

Do I need to act?

~
8.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
45497
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (8)

Active Iq Performance Analytics Services

Affected Vendors

Debian Linux Canonical Netapp

References (32)

Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cde...
Third Party Advisory http://www.securityfocus.com/bid/105417
Third Party Advisory http://www.securityfocus.com/bid/106503
Patch http://www.securitytracker.com/id/1041748
Third Party Advisory https://access.redhat.com/errata/RHSA-2018:3656
Patch https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b...
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
Patch https://security.netapp.com/advisory/ntap-20190204-0001/
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-4308
Exploit https://www.exploit-db.com/exploits/45497/
Mailing List https://www.openwall.com/lists/oss-security/2018/09/18/4
Patch http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cde...
Third Party Advisory http://www.securityfocus.com/bid/105417
Third Party Advisory http://www.securityfocus.com/bid/106503
Patch http://www.securitytracker.com/id/1041748
and 12 more references
55
/ 100
high-risk
Severity 24/34 · High
Exploitability 17/34 · Moderate
Exposure 14/34 · Moderate