A flaw was found in the Linux kernel's implementation of the BFQ IO scheduler. This flaw allows a local user able to groom system memory to cause kernel memory corruption and possible privilege escalation by abusing a race condition in the IO scheduler.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | kernel | 2020-05-11 20:43 | ALAS-2020-1366 |
Amazon Linux 1 | kernel | 2020-06-23 06:02 | ALAS-2020-1382 |
Amazon Linux 2 - Core | kernel | 2020-06-16 18:21 | ALAS2-2020-1440 |
Amazon Linux 2 - Livepatch Extra | kernel-livepatch-4.14.171-136.231 | 2020-05-29 19:02 | ALAS2LIVEPATCH-2020-011 |
Amazon Linux 2 - Livepatch Extra | kernel-livepatch-4.14.173-137.228 | 2020-05-29 19:02 | ALAS2LIVEPATCH-2020-012 |
Amazon Linux 2 - Livepatch Extra | kernel-livepatch-4.14.173-137.229 | 2020-05-29 19:02 | ALAS2LIVEPATCH-2020-013 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
NVD | CVSSv2 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |