CVE-2018-12714
This allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impact via crafted perf_event_open and mmap system calls.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in the Linux kernel through 4.17.2. The filter parsing in kernel/trace/trace_events_filter.c could be called with no filter, which is an N=0 case when it expected at least one line to have been read, thus making the N-1 index invalid. This allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impact via crafted perf_event_open and mmap system calls.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.21% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81f9c4e4177d31ced6f52a89bb70e93bfb77ca03Vendor Advisory
- http://www.securityfocus.com/bid/104544Third Party Advisory, VDB Entry
- https://bugzilla.kernel.org/show_bug.cgi?id=200019Issue Tracking, Vendor Advisory
- https://github.com/lcytxw/bug_repro/tree/master/bug_200019Exploit, Third Party Advisory
- https://github.com/torvalds/linux/commit/81f9c4e4177d31ced6f52a89bb70e93bfb77ca03Patch, Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81f9c4e4177d31ced6f52a89bb70e93bfb77ca03Vendor Advisory
- http://www.securityfocus.com/bid/104544Third Party Advisory, VDB Entry
- https://bugzilla.kernel.org/show_bug.cgi?id=200019Issue Tracking, Vendor Advisory
- https://github.com/lcytxw/bug_repro/tree/master/bug_200019Exploit, Third Party Advisory
- https://github.com/torvalds/linux/commit/81f9c4e4177d31ced6f52a89bb70e93bfb77ca03Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.