CVE-2021-20322

CVE-2021-20322 relates to a Linux kernel ICMP handling flaw (ICMP fragment needed/redirect) that lets an off-path attacker quickly discover UDP port usage, bypassing UDP source port randomization. The connected advisories confirm this affects the Linux kernel and multiple distributions and mentio...

Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5268-1)

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5268-1 advisory. Keyu Man discovered that the ICMP implementation in the Linux kernel did not properly handle received ICMP error packets. A remote attacker...

PT-2025-8565

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A data-race issue exists around sysctl icmp errors use inbound ifaddr. The value of sysctl icmp errors use inbound ifaddr can be changed concurrently while it is being read, which requir...

SUSE SLES15 Security Update : kernel (Live Patch 0 for SLE 15 SP3) (SUSE-SU-2021:4099-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:4099-1 advisory. This update for the Linux Kernel 5.3.18-57 fixes several issues. The following security issues were fixed: - CVE-2021-0941: In...

SUSE SLES12: kernel-livepatch-4_12_14-150_75-default / etc (SUSE-SU-2021:4038-1)

The remote SUSE Linux SLES12 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:4038-1 advisory. This update for the Linux Kernel 4.12.14-12291 fixes several issues. The following security issues were fixed: - CVE-2021-0941: In...

SUSE SLES12 Security Update : kernel (Live Patch 25 for SLE 12 SP5) (SUSE-SU-2021:4021-1)

The remote SUSE Linux SLES12 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:4021-1 advisory. This update for the Linux Kernel 4.12.14-12298 fixes several issues. The following security issues were fixed: - CVE-2021-0941: In...

SUSE SLES15 Security Update : kernel (Live Patch 15 for SLE 15 SP2) (SUSE-SU-2021:4090-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:4090-1 advisory. This update for the Linux Kernel 5.3.18-24534 fixes several issues. The following security issues were fixed: - CVE-2021-0941: In...

SUSE SLES12 Security Update : kernel (Live Patch 40 for SLE 12 SP3) (SUSE-SU-2021:4057-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2021:4057-1 advisory. This update for the Linux Kernel 4.4.180-94147 fixes one issue. The following security issue was fixed: - CVE-2021-20322: Make the ipv4 and...

SUSE SLES12: cluster-md-kmp-rt / dlm-kmp-rt / gfs2-kmp-rt / kernel-devel-rt / etc (SUSE-SU-2021:3992-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3992-1 advisory. The SUSE Linux Enterprise 12 SP5 Real Time kernel was updated to receive various security and bugfixes. The following security bugs were fixed:...

SUSE SLES15: cluster-md-kmp-rt / dlm-kmp-rt / gfs2-kmp-rt / kernel-devel-rt / etc (SUSE-SU-2021:3979-1)

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3979-1 advisory. The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: -...

SUSE SLES12: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3972-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3972-1 advisory. The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixe...

SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3969-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3969-1 advisory. The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes. The following security bugs were fixed:...

SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3941-1)

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3941-1 advisory. The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: ...

SUSE SLES12: kernel-default / kernel-default-base / kernel-default-devel / etc (SUSE-SU-2021:3929-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3929-1 advisory. The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes. The following security bugs were fixed: -...

SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3933-1)

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3933-1 advisory. The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: ...

SUSE SLED12: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3877-1)

The remote SUSE Linux SLED12 / SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3877-1 advisory. The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes. The following security bugs...

SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2021:3876-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3876-1 advisory. The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes. The following security bugs were...

SUSE SLES12: kernel-azure / kernel-azure-base / kernel-azure-devel / etc (SUSE-SU-2021:3848-1)

The remote SUSE Linux SLES12 / SLESSAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:3848-1 advisory. The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes. The following security bugs wer...

CVE-2021-20322

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...

CVE-2021-20322

A flaw in the processing of received ICMP errors ICMP fragment needed and ICMP redirect in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest...