Home/CVE/An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles
CVE

CVE-2018-17182

An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles

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.

HIGH · CVSS 7.8 EPSS 0.08509
Act now
  • EPSS percentile: top 7% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
▤

Affected Products & Versions

10
linux kernel>= 3.16 and < 3.16.58
linux kernel>= 3.17 and < 3.18.123
linux kernel>= 3.19 and < 4.4.157
linux kernel>= 4.5 and < 4.9.128
linux kernel>= 4.10 and < 4.14.71
linux kernel>= 4.15 and < 4.18.9
canonical ubuntu linuxall versions
debian linuxall versions
⚠

Public Exploits & PoCs

2
localLinux Kernel - VMA Use-After-Free via Buggy vmacache_flush_all() Fastpath Local Privilege Escalationverified
pocwww.exploit-db.com · 45497www.exploit-db.com
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Sep 2018 · 09:29 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

26
suse-csafSUSE-SU-2018:3032-2
suse-csafSUSE-SU-2019:0095-1
android-securityANDROID-2019-01-01High
suse-csafSUSE-SU-2018:3961-1
suse-csafSUSE-SU-2018:3659-1
🔗

References & Sources

14
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2PatchThird Party Advisory
http://www.securityfocus.com/bid/105417Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/106503Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041748PatchThird Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2PatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.htmlThird Party Advisory
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