CVE-2019-11190

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.7 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
VendorProductVersion
linuxlinux_kernel
𝑥
< 4.8
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
trixie
6.11.5-1
fixed
sid
6.11.6-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
Fixed 4.4.0-149.175
released
trusty
ignored
linux-aws
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
Fixed 4.4.0-1084.94
released
trusty
Fixed 4.4.0-1045.48
released
linux-aws-hwe
disco
dne
cosmic
dne
bionic
dne
xenial
not-affected
trusty
dne
linux-azure
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
linux-azure-edge
disco
dne
cosmic
dne
bionic
not-affected
xenial
not-affected
trusty
dne
linux-euclid
disco
dne
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-flo
disco
dne
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-gcp
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
not-affected
trusty
dne
linux-gcp-edge
disco
dne
cosmic
dne
bionic
not-affected
xenial
dne
trusty
dne
linux-gke
disco
dne
cosmic
dne
bionic
not-affected
xenial
ignored
trusty
dne
linux-goldfish
disco
dne
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-grouper
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-hwe
disco
dne
cosmic
dne
bionic
not-affected
xenial
not-affected
trusty
dne
linux-hwe-edge
disco
dne
cosmic
dne
bionic
not-affected
xenial
not-affected
trusty
dne
linux-kvm
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
Fixed 4.4.0-1047.53
released
trusty
dne
linux-lts-trusty
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-lts-utopic
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
ignored
linux-lts-vivid
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
ignored
linux-lts-wily
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
ignored
linux-lts-xenial
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
Fixed 4.4.0-150.176~14.04.1
released
linux-maguro
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-mako
disco
dne
cosmic
dne
bionic
dne
xenial
ignored
trusty
dne
linux-manta
disco
dne
cosmic
dne
bionic
dne
xenial
dne
trusty
dne
linux-oem
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
ignored
trusty
dne
linux-oracle
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
not-affected
trusty
dne
linux-raspi2
disco
not-affected
cosmic
not-affected
bionic
not-affected
xenial
Fixed 4.4.0-1110.118
released
trusty
dne
linux-snapdragon
disco
not-affected
cosmic
dne
bionic
Fixed 4.15.0-1053.57
released
xenial
Fixed 4.4.0-1114.119
released
trusty
dne
Common Weakness Enumeration
References
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
http://www.openwall.com/lists/oss-security/2019/04/15/1
http://www.securityfocus.com/bid/107890
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=a5b5352558f6808db0589644ea5401b3e3148a0d
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=e1676b55d874a43646e8b2c46d87f2f3e45516ff
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://usn.ubuntu.com/4008-1/
https://usn.ubuntu.com/4008-2/
https://usn.ubuntu.com/4008-3/
https://www.openwall.com/lists/oss-security/2019/04/03/4
https://www.openwall.com/lists/oss-security/2019/04/03/4/1
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
http://www.openwall.com/lists/oss-security/2019/04/15/1
http://www.securityfocus.com/bid/107890
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=a5b5352558f6808db0589644ea5401b3e3148a0d
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/commit/?id=e1676b55d874a43646e8b2c46d87f2f3e45516ff
https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
https://usn.ubuntu.com/4008-1/
https://usn.ubuntu.com/4008-2/
https://usn.ubuntu.com/4008-3/
https://www.openwall.com/lists/oss-security/2019/04/03/4
https://www.openwall.com/lists/oss-security/2019/04/03/4/1