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CVE-2019-7308

Published: 1 February 2019

kernel/bpf/verifier.c in the Linux kernel before 4.20.6 performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.

From the Ubuntu security team

Jann Horn discovered that the eBPF implementation in the Linux kernel was insufficiently hardened against Spectre V1 attacks. A local attacker could use this to expose sensitive information.

Priority

Medium

CVSS 3 base score: 5.6

Status

Package Release Status
linux-lts-trusty
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Not vulnerable
(3.13.0-24.46~precise1)
trusty Does not exist

xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(end-of-life)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-mako
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-manta
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-flo
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
hirsute Does not exist

xenial Ignored
(was needed now end-of-life)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

bionic
Released (4.15.0-1033.35)
cosmic
Released (4.18.0-1011.13)
disco Not vulnerable
(5.0.0-1004.4)
eoan Not vulnerable
(5.0.0-1006.6)
focal Not vulnerable
(5.4.0-1004.4)
groovy Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Ignored
(was needed ESM criteria)
xenial Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
hirsute Does not exist

xenial Ignored
(was needed now end-of-life)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

bionic Not vulnerable
(4.4.0-1077.82)
cosmic Does not exist

disco Not vulnerable
(5.0.0-1010.10)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-47.50~16.04.1)
bionic
Released (4.18.0-17.18~18.04.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-47.50~16.04.1)
bionic Not vulnerable
(5.0.0-15.16~18.04.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-gke
Launchpad, Ubuntu, Debian
hirsute Does not exist

focal Not vulnerable
(5.4.0-1033.35)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Ignored
(end-of-life)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

groovy Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(4.15.0-1030.32)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (4.18.0-1014.14~18.04.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1010.11+21.04.1)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Ignored
(was needed now end-of-life)
bionic
Released (4.15.0-1031.31)
cosmic
Released (4.18.0-1009.9)
disco Not vulnerable
(5.0.0-1001.1)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1004.4)
groovy Not vulnerable
(5.4.0-1009.9)
linux-euclid
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Not vulnerable
(4.4.0-9019.20)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-oem
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Ignored
(was needs-triage now end-of-life)
bionic
Released (4.15.0-1035.40)
cosmic
Released (4.15.0-1035.40)
disco Not vulnerable
(4.15.0-1035.40)
eoan Not vulnerable
(4.15.0-1035.40)
focal Does not exist

groovy Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic
Released (4.15.0-1029.31)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-1035.37~16.04.1)
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.0.0-1010.11)
disco Not vulnerable
(5.0.0-1010.11)
eoan Not vulnerable
(5.0.0-1010.11)
focal Does not exist

groovy Does not exist

linux-aws-5.0
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.0.0-1021.24~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.3.0-1007.8~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.3.0-1008.9~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-oracle-5.0
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.0.0-1007.12~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.3.0-1017.19~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.6.0-1007.7)
groovy Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-azure-4.15
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(4.15.0-1082.92)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.3.0-1016.17~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-gcp-4.15
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(4.15.0-1071.81)
eoan Does not exist

focal Does not exist

groovy Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-37.41~18.04.1)
focal Does not exist

groovy Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1013.13~18.04.1)
focal Does not exist

groovy Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1020.20~18.04.1)
focal Does not exist

groovy Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1019.19~18.04.1)
focal Does not exist

groovy Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1019.19~18.04.2)
focal Does not exist

groovy Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
hirsute Does not exist

upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1018.18~18.04.1)
focal Does not exist

groovy Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-10.12+21.04.1)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-24.28)
groovy Not vulnerable
(5.4.0-24.28)
linux-raspi
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1008.11+21.04.1)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-1007.7)
groovy Not vulnerable
(5.4.0-1008.8)
linux-hwe-5.8
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Not vulnerable
(5.8.0-23.24~20.04.1)
upstream
Released (5.0~rc3)
linux-gke-5.4
Launchpad, Ubuntu, Debian
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1025.25~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Not vulnerable
(5.4.0-1001.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (5.0~rc3)
linux
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-36.40+21.04.1)
xenial Ignored
(was needed now end-of-life)
upstream
Released (5.0~rc3)
precise Not vulnerable
(3.0.0-12.20)
trusty Not vulnerable
(3.11.0-12.19)
bionic
Released (4.15.0-47.50)
cosmic
Released (4.18.0-17.18)
disco Not vulnerable
(4.19.0-13.14)
eoan Not vulnerable
(5.0.0-13.14)
focal Not vulnerable
(5.4.0-9.12)
groovy Not vulnerable
(5.4.0-26.30)
Patches:
Introduced by

b2157399cc9898260d6031c5bfe45fe137c1fbe7

Fixed by 979d63d50c0c0f7bc537bf821e056cc9fe5abd38
Introduced by

b2157399cc9898260d6031c5bfe45fe137c1fbe7

Fixed by d3bd7413e0ca40b60cf60d4003246d067cafdeda
linux-aws
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1018.20+21.04.1)
xenial Ignored
(was needed now end-of-life)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Ignored
(was needed ESM criteria)
bionic
Released (4.15.0-1035.37)
cosmic
Released (4.18.0-1012.14)
disco Not vulnerable
(5.0.0-1001.1)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
linux-azure
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1016.17+21.04.1)
upstream
Released (5.0~rc3)
precise Does not exist

trusty
Released (4.15.0-1041.45~14.04.1)
xenial
Released (4.15.0-1041.45)
bionic
Released (4.18.0-1014.14~18.04.1)
cosmic
Released (4.18.0-1014.14)
disco Not vulnerable
(5.0.0-1001.1)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1006.6)
groovy Not vulnerable
(5.4.0-1010.10)
linux-gcp
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1015.15+21.04.1)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-1029.31~16.04.1)
bionic
Released (4.15.0-1029.31)
cosmic
Released (4.18.0-1008.9)
disco Not vulnerable
(5.0.0-1001.1)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
linux-oracle
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-1014.14+21.04.1)
upstream
Released (5.0~rc3)
precise Does not exist

trusty Does not exist

xenial
Released (4.15.0-1010.12~16.04.1)
bionic
Released (4.15.0-1010.12)
cosmic
Released (4.15.0-1010.12)
disco Not vulnerable
(4.15.0-1010.12)
eoan Not vulnerable
(4.15.0-1011.13)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
linux-dell300x
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1005.8)
upstream
Released (5.0~rc3)
linux-oem-5.10
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Not vulnerable
(5.10.0-1008.9)
upstream
Released (5.0~rc3)
linux-gkeop
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Not vulnerable
(5.4.0-1008.9)
upstream
Released (5.0~rc3)

Notes

AuthorNote
tyhicks
Mitigation for this vulnerability is available by setting the
kernel.unprivileged_bpf_disabled sysctl to 1:
$ sudo sysctl kernel.unprivileged_bpf_disabled=1
$ echo kernel.unprivileged_bpf_disabled=1 | \
sudo tee /etc/sysctl.d/90-CVE-2019-7308.conf
This issue is mitigated on systems that use secure boot, thanks to
the kernel lockdown feature which blocks BPF program loading.

References