A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of service.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25704
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=1895961
- URL: https://bugzilla.redhat.com/show_bug.cgi?id=1895961
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- URL: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bdb157cdebbf95a1cd94ed2e01b338714075d00
- https://www.openwall.com/lists/oss-security/2020/11/09/1