CVE-2018-17182 EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 3.2% (pctl 88)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 3.21% — more likely to be exploited than 88% of all CVEs |
| Weakness | CWE-416 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2018-09-19 |
| Last modified | 2026-06-17 |
Affected (5)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian linux |
| linux | linux kernel |
| netapp | active iq performance analytics services |
| netapp | element software |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Linux Kernel - VMA Use-After-Free via Buggy vmacache_flush_all() Fastpath Local Privilege Escalation | 2018-09-26 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2
- http://www.securityfocus.com/bid/105417
- http://www.securityfocus.com/bid/106503
- http://www.securitytracker.com/id/1041748
- https://access.redhat.com/errata/RHSA-2018:3656
- https://github.com/torvalds/linux/commit/7a9cdebdcc17e426fb5287e4a82db1dfe86339b2
- https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html
- https://security.netapp.com/advisory/ntap-20190204-0001/
- https://usn.ubuntu.com/3776-1/
- https://usn.ubuntu.com/3776-2/
- https://usn.ubuntu.com/3777-1/
- https://usn.ubuntu.com/3777-2/
- https://usn.ubuntu.com/3777-3/
- https://www.debian.org/security/2018/dsa-4308
- https://www.exploit-db.com/exploits/45497/
- https://www.openwall.com/lists/oss-security/2018/09/18/4
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7a9cdebdcc17e426fb5287e4a82db1dfe86339b2
- http://www.securityfocus.com/bid/105417
- http://www.securityfocus.com/bid/106503
- http://www.securitytracker.com/id/1041748
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