CVE-2022-49561

EUVD-2022-54671
In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack: re-fetch conntrack after insertion

In case the conntrack is clashing, insertion can free skb->_nfct and
set skb->_nfct to the already-confirmed entry.

This wasn't found before because the conntrack entry and the extension
space used to free'd after an rcu grace period, plus the race needs
events enabled to trigger.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 16%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
4.7 ≤
𝑥
< 4.14.282
linuxlinux_kernel
4.15 ≤
𝑥
< 4.19.246
linuxlinux_kernel
4.20 ≤
𝑥
< 5.4.197
linuxlinux_kernel
5.5 ≤
𝑥
< 5.10.120
linuxlinux_kernel
5.11 ≤
𝑥
< 5.15.45
linuxlinux_kernel
5.16 ≤
𝑥
< 5.17.13
linuxlinux_kernel
5.18 ≤
𝑥
< 5.18.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.123-1
fixed
bookworm (security)
6.1.128-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.234-1
fixed
sid
6.12.16-1
fixed
trixie
6.12.12-1
fixed
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
cluster-md-kmp-default
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
dlm-kmp-default
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
gfs2-kmp-default
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
kernel-default
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
kernel-default-base
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
kernel-default-man
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
kernel-macros
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
kernel-source
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
kernel-syms
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
ocfs2-kmp-default
suse enterprise server 12 SP5
4.12.14-122.258.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
bpftool
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-abi-stablelists
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-core
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-debug
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-debug-core
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-debug-devel
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-debug-devel-matched
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-debug-modules
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-debug-modules-extra
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-devel
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-devel-matched
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-doc
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-modules
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-modules-extra
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-tools
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-tools-libs
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-tools-libs-devel
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-zfcpdump
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-zfcpdump-core
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-zfcpdump-devel
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-zfcpdump-devel-matched
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-zfcpdump-modules
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
kernel-zfcpdump-modules-extra
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
perf
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
python3-perf
RHEL 8
0:4.18.0-425.3.1.el8
fixed
RHEL 9
0:5.14.0-162.6.1.el9_1
fixed
References
https://git.kernel.org/stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caed
https://git.kernel.org/stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0
https://git.kernel.org/stable/c/04f9e9104c969d8ce10a4a43634f641ed082092d
https://git.kernel.org/stable/c/56b14ecec97f39118bf85c9ac2438c5a949509ed
https://git.kernel.org/stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3
https://git.kernel.org/stable/c/92a999d1963eed0df666284e20055136ceabd12f
https://git.kernel.org/stable/c/b16bb373988da3ceb0308381634117e18b6ec60d
https://git.kernel.org/stable/c/e97222b785e70e8973281666d709baad6523d8af