CVE-2022-20567
published 2022-12-16CVE-2022-20567: In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System…
PriorityP428medium6.4CVSS 3.1
AVLACHPRHUINSUCHIHAH
EPSS
0.11%
1.5th percentile
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 4.15.11-1 (bookworm) | linux 4.15.11-1 (bookworm) |
| linux | linux_kernel | >= 0 < 4.15.11-1 | 4.15.11-1 |
| linux | linux_kernel | >= 0 < 4.15.11-1 | 4.15.11-1 |
| linux | linux_kernel | >= 0 < 4.15.11-1 | 4.15.11-1 |
| linux | linux_kernel | >= 0 < 4.15.11-1 | 4.15.11-1 |
| linux | linux_kernel | >= 0 < 4.4.0-252.286 | 4.4.0-252.286 |
CVSS provenance
nvdv3.16.4MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
osv6.4MEDIUM
vendor_debian6.4MEDIUM
vendor_redhat6.4MEDIUM
vendor_ubuntu6.4MEDIUM
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OSV
linux-aws vulnerabilities
osv·2024-03-21·CVSS 6.4
CVE-2022-20567 [MEDIUM] linux-aws vulnerabilities
linux-aws vulnerabilities
It was discovered that the Layer 2 Tunneling Protocol (L2TP) implementation
in the Linux kernel contained a race condition when releasing PPPoL2TP
sockets in certain conditions, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20567)
It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle block device modification while it is
mounted. A privileged attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-34256)
Eric Dumazet discovered that the netfilter subsystem in the Linux kernel
did not properly handle DCCP conntrack buffers in certain
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2024-03-18·CVSS 6.4
CVE-2022-20567 [MEDIUM] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
It was discovered that the Layer 2 Tunneling Protocol (L2TP) implementation
in the Linux kernel contained a race condition when releasing PPPoL2TP
sockets in certain conditions, leading to a use-after-free vulnerability.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20567)
It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle block device modification while it is
mounted. A privileged attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-34256)
Eric Dumazet discovered that the netfilter subsystem in the Linux kernel
did not properly handl
GHSA
GHSA-3r9w-jr8m-vqjq: In pppol2tp_create of l2tp_ppp
ghsa_unreviewed·2022-12-21
CVE-2022-20567 [MEDIUM] CWE-362 GHSA-3r9w-jr8m-vqjq: In pppol2tp_create of l2tp_ppp
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel
OSV
CVE-2022-20567: In pppol2tp_create of l2tp_ppp
osv·2022-12-16·CVSS 6.4
CVE-2022-20567 [MEDIUM] CVE-2022-20567: In pppol2tp_create of l2tp_ppp
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel
OSV
CVE-2022-20567: In pppol2tp_create of l2tp_ppp
osv·2022-12-01
CVE-2022-20567 CVE-2022-20567: In pppol2tp_create of l2tp_ppp
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
Ubuntu
Linux kernel (AWS) vulnerabilities
vendor_ubuntu·2024-03-21·CVSS 6.4
CVE-2024-0775 [MEDIUM] Linux kernel (AWS) vulnerabilities
Title: Linux kernel (AWS) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Layer 2 Tunneling Protocol (L2TP) implementation
in the Linux kernel contained a race condition when releasing PPPoL2TP
sockets in certain conditions, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20567)
It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle block device modification while it is
mounted. A privileged attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-34256)
Eric Dumazet discovered that the netfilter subsys
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2024-03-18·CVSS 6.4
CVE-2023-34256 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Layer 2 Tunneling Protocol (L2TP) implementation
in the Linux kernel contained a race condition when releasing PPPoL2TP
sockets in certain conditions, leading to a use-after-free vulnerability.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20567)
It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle block device modification while it is
mounted. A privileged attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-34256)
Eric Dumazet discovered that the netfilter subsystem in
Debian
CVE-2022-20567: linux - In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a ra...
vendor_debian·2022·CVSS 6.4
CVE-2022-20567 [MEDIUM] CVE-2022-20567: linux - In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a ra...
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel
Scope: local
bookworm: resolved (fixed in 4.15.11-1)
bullseye: resolved (fixed in 4.15.11-1)
forky: resolved (fixed in 4.15.11-1)
sid: resolved (fixed in 4.15.11-1)
trixie: resolved (fixed in 4.15.11-1)
Red Hat
kernel: race in pppol2tp_release
vendor_redhat·2018-02-26·CVSS 6.4
CVE-2022-20567 [MEDIUM] CWE-362 kernel: race in pppol2tp_release
kernel: race in pppol2tp_release
In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-186777253References: Upstream kernel
A use-after-free flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP) when user closes a socket. This could allow a local user to crash the system or potentially escalate their privileges on the system.
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterpris
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2022-12-16
Published