Description

A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812.

References

https://twitter.com/grsecurity/status/1303749848898904067

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17743798d81238ab13050e8e2833699b54e15467

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.8

https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html

https://security.netapp.com/advisory/ntap-20201009-0002/

https://usn.ubuntu.com/4576-1/

https://usn.ubuntu.com/4579-1/

https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html

https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html

Details

Risk Information

CVSS v2

CVSS v3