Gentoo Websites Logo
Go to: Gentoo Home Documentation Forums Lists Bugs Planet Store Wiki Get Gentoo!
Bug 708196 (CVE-2020-8428, CVE-2020-8647, CVE-2020-8648, CVE-2020-8649) - Kernel: multiple vulnerabilities (CVE-2020-{8428,8647,8648,8649})
Summary: Kernel: multiple vulnerabilities (CVE-2020-{8428,8647,8648,8649})
Alias: CVE-2020-8428, CVE-2020-8647, CVE-2020-8648, CVE-2020-8649
Product: Gentoo Security
Classification: Unclassified
Component: Kernel (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Security
Whiteboard: A?
Depends on:
Reported: 2020-02-04 10:36 UTC by filip ambroz
Modified: 2021-12-19 01:14 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


Note You need to log in before you can comment on or make changes to this bug.
Description filip ambroz 2020-02-04 10:36:58 UTC
fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed.

Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2021-12-19 01:14:50 UTC
Fixes at the latest merged for 5.5.9 and all long backported to stable trees.