CVE-2022-21499
published 2022-06-09CVE-2022-21499: KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could…
PriorityP430medium6.7CVSS 3.1
AVLACLPRHUINSUCHIHAH
EPSS
0.61%
45.2th percentile
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
Affected
25 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 5.17.11-1 (bookworm) | linux 5.17.11-1 (bookworm) |
| linux | linux_kernel | >= 0 < 5.10.120-1 | 5.10.120-1 |
| linux | linux_kernel | >= 0 < 5.17.11-1 | 5.17.11-1 |
| linux | linux_kernel | >= 0 < 5.17.11-1 | 5.17.11-1 |
| linux | linux_kernel | >= 0 < 5.17.11-1 | 5.17.11-1 |
| linux | linux_kernel | >= 0 < 4.15.0-184.194 | 4.15.0-184.194 |
| linux | linux_kernel | >= 0 < 5.4.0-117.132 | 5.4.0-117.132 |
| linux | linux_kernel | >= 0 < 5.15.0-37.39 | 5.15.0-37.39 |
| linux | linux_kernel | >= 0 < 3.13.0-190.241 | 3.13.0-190.241 |
| linux | linux_kernel | >= 0 < 4.4.0-227.261 | 4.4.0-227.261 |
| linux | linux_kernel | >= 0 < 4.4.0-231.265 | 4.4.0-231.265 |
| linux | linux_kernel | >= 0 < 4.15.0-191.202 | 4.15.0-191.202 |
| linux | linux_kernel | >= 0 < 4.15.0-180.189 | 4.15.0-180.189 |
| linux | linux_kernel | >= 0 < 5.4.0-124.140 | 5.4.0-124.140 |
| linux | linux_kernel | >= 0 < 5.4.0-117.132 | 5.4.0-117.132 |
| linux | linux_kernel | >= 0 < 5.15.0-46.49 | 5.15.0-46.49 |
| linux | linux_kernel | >= 0 < 5.15.0-37.39 | 5.15.0-37.39 |
| oracle | linux | — | — |
| oracle | linux | — | — |
| oracle | linux | — | — |
| oracle_corporation | oracle_linux | — | — |
| oracle_corporation | oracle_linux | — | — |
| oracle_corporation | oracle_linux | — | — |
| oracle_corporation | oracle_vm | — | — |
CVSS provenance
nvdv3.16.7MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
osv8.2HIGH
vendor_ubuntu8.2HIGH
vendor_debian6.7MEDIUM
vendor_redhat6.7MEDIUM
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Ubuntu
Kernel Live Patch Security Notice
vendor_ubuntu·2022-08-24·CVSS 6.7
CVE-2022-2586 [MEDIUM] Kernel Live Patch Security Notice
Title: Kernel Live Patch Security Notice
Summary: Several security issues were fixed in the kernel.
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-1966)
Ziming Zhang discovered that the netfilter subsystem in the Linux kernel
did not properly validate sets with multiple ranged fields. A local
attacker could use this to cause a denial of service or execute arbitrary
code.(CVE-2022-1972)
It was discovered that the implementation of POSIX timers in the Linux
kernel did not properly clean up timers in some situations. A local
attacke
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-06-16·CVSS 7.0
CVE-2022-21123 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
It was discovered that a race condition existed in the network scheduling
subsystem of the Linux kernel, 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-2021-39713)
It was discovered that some Intel processors did not completely perform
cleanup actions on multi-core shared buffers. A local attacker could
possibly use this to expose sensitive informa
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 4.4
CVE-2022-1671 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Billy Jheng Bing Jhong discovered that the CIFS network file system
implementation in the Linux kernel did not properly validate arguments to
ioctl()
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 6.7
CVE-2022-1966 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Jann Horn discovered that the Linux kernel did not properly enforce seccomp
restrictions in some situations. A local attacker could use this to bypas
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 7.8
CVE-2022-1966 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Qiuhao Li, Gaoning Pan and Yongkang Jia discovered that the KVM
implementation in the Linux kernel did not properly perform guest page
table updates
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 8.2
CVE-2022-1012 [HIGH] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation
in the Linux kernel did not provide sufficient randomization when
c
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 6.5
CVE-2022-1966 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
It was discovered that the SCTP protocol implementation in the Linux kernel
did not properly verify VTAGs in some situations. A remote attacker could
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 6.5
CVE-2022-28389 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
It was discovered that the SCTP protocol implementation in the Linux kernel
did not properly verify VTAGs in some situations. A remote attacker could
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2022-06-08·CVSS 6.7
CVE-2022-21499 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Minh Yuan discovered that the floppy driver in the Linux kernel contained a
race condition in some situations, leading to a use-after-free
vuln
Ubuntu
Kernel Live Patch Security Notice
vendor_ubuntu·2022-06-02·CVSS 7.0
CVE-2022-1055 [HIGH] Kernel Live Patch Security Notice
Title: Kernel Live Patch Security Notice
Summary: Several security issues were fixed in the kernel.
It was discovered that a race condition existed in the network scheduling
subsystem of the Linux kernel, 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-2021-39713)
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges.(CVE-2022-0492)
It was discovered that the network traffic control implementation in the
Linux kernel contained a use-after-free vulnerability. A local attacker
could use this to cause a denial
Red Hat
kernel: possible to use the debugger to write zero into a location of choice
vendor_redhat·2022-05-24·CVSS 6.7
CVE-2022-21499 [MEDIUM] CWE-267 kernel: possible to use the debugger to write zero into a location of choice
kernel: possible to use the debugger to write zero into a location of choice
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
A flaw was found in the kernel/debug/debug_core.c in the Linux kernel in lockdown mode. This flaw allows an attacker with local access to trigger the debugger, bypass lockdown and write anonymously.
Mitigation: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat
Debian
CVE-2022-21499: linux - KGDB and KDB allow read and write access to kernel memory, and thus should be re...
vendor_debian·2022·CVSS 6.7
CVE-2022-21499 [MEDIUM] CVE-2022-21499: linux - KGDB and KDB allow read and write access to kernel memory, and thus should be re...
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
Scope: local
bookworm: resolved (fixed in 5.17.11-1)
bullseye: resolved (fixed in 5.10.120-1)
forky: resolved (fixed in 5.17.11-1)
sid: resolved (fixed in 5.17.11-1)
trixie: resolved (fixed in 5.17.11-1)
OSV
Kernel Live Patch Security Notice
osv·2022-08-24·CVSS 7.8
CVE-2022-1966 [HIGH] Kernel Live Patch Security Notice
Kernel Live Patch Security Notice
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did not properly handle the removal of stateful expressions in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2022-1966)
Ziming Zhang discovered that the netfilter subsystem in the Linux kernel
did not properly validate sets with multiple ranged fields. A local
attacker could use this to cause a denial of service or execute arbitrary
code.(CVE-2022-1972)
It was discovered that the implementation of POSIX timers in the Linux
kernel did not properly clean up timers in some situations. A local
attacker could use this to cause a denial of service (system crash) or
exe
OSV
linux vulnerabilities
osv·2022-06-16·CVSS 7.0
CVE-2022-21499 [HIGH] linux vulnerabilities
linux vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
It was discovered that a race condition existed in the network scheduling
subsystem of the Linux kernel, 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-2021-39713)
It was discovered that some Intel processors did not completely perform
cleanup actions on multi-core shared buffers. A local attacker could
possibly use this to expose sensitive information. (CVE-2022-21123)
It was discovered that some Intel processors did not com
GHSA
GHSA-rcmc-qxj3-63p4: KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown
ghsa_unreviewed·2022-06-10
CVE-2022-21499 [MEDIUM] CWE-787 GHSA-rcmc-qxj3-63p4: KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H).
OSV
CVE-2022-21499: KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown
osv·2022-06-09·CVSS 6.7
CVE-2022-21499 [MEDIUM] CVE-2022-21499: KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
OSV
linux-oem-5.14 vulnerabilities
osv·2022-06-08·CVSS 3.3
CVE-2022-21499 [LOW] linux-oem-5.14 vulnerabilities
linux-oem-5.14 vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Minh Yuan discovered that the floppy driver in the Linux kernel contained a
race condition in some situations, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(syst
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2022-06-08·CVSS 7.8
CVE-2022-21499 [HIGH] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Jann Horn discovered that the Linux kernel did not properly enforce seccomp
restrictions in some situations. A local attacker could use this to bypass
intended seccomp sandbox restrictions.
OSV
linux-oem-5.17 vulnerabilities
osv·2022-06-08·CVSS 8.2
CVE-2022-21499 [HIGH] linux-oem-5.17 vulnerabilities
linux-oem-5.17 vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation
in the Linux kernel did not provide sufficient randomization when
calculating port offsets. An attacker could possibly use this to expose
sensit
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.
osv·2022-06-08·CVSS 6.5
[MEDIUM] linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-azure-fde, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or e
OSV
linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-intel-5.13, linux-kvm, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities
osv·2022-06-08·CVSS 7.8
CVE-2022-21499 [HIGH] linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-intel-5.13, linux-kvm, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities
linux, linux-aws, linux-aws-5.13, linux-azure, linux-azure-5.13, linux-gcp, linux-gcp-5.13, linux-hwe-5.13, linux-intel-5.13, linux-kvm, linux-oracle, linux-oracle-5.13, linux-raspi vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Qiuhao Li, Gaoning Pan and Yongkang Jia discovered th
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
osv·2022-06-08·CVSS 6.5
CVE-2022-21499 [MEDIUM] linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
It was discovered that the SCTP protocol implementation in the Linux kernel
d
OSV
linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities
osv·2022-06-08·CVSS 4.4
CVE-2022-21499 [MEDIUM] linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities
linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
Billy Jheng Bing Jhong discovered that the CIFS network file system
implementation in the Linux ke
OSV
Kernel Live Patch Security Notice
osv·2022-06-02·CVSS 7.0
CVE-2021-39713 [HIGH] Kernel Live Patch Security Notice
Kernel Live Patch Security Notice
It was discovered that a race condition existed in the network scheduling
subsystem of the Linux kernel, 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-2021-39713)
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges.(CVE-2022-0492)
It was discovered that the network traffic control implementation in the
Linux kernel contained 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-
Kernel
lockdown: also lock down previous kgdb use
kernel_security·2022-05-23·CVSS 6.7
CVE-2022-21499 [MEDIUM] lockdown: also lock down previous kgdb use
lockdown: also lock down previous kgdb use
KGDB and KDB allow read and write access to kernel memory, and thus
should be restricted during lockdown. An attacker with access to a
serial port (for example, via a hypervisor console, which some cloud
vendors provide over the network) could trigger the debugger so it is
important that the debugger respect the lockdown mode when/if it is
triggered.
Fix this by integrating lockdown into kdb's existing permissions
mechanism. Unfortunately kgdb does not have any permissions mechanism
(although it certainly could be added later) so, for now, kgdb is simply
and brutally disabled by immediately exiting the gdb stub without taking
any action.
For lockdowns established early in the boot (e.g. the normal case) then
this should be fine but on systems w
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.htmlhttps://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066https://www.debian.org/security/2022/dsa-5161http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.htmlhttps://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066https://www.debian.org/security/2022/dsa-5161
2022-06-09
Published