PT-2026-90059

In the Linux kernel, the following vulnerability has been resolved: sysctl: move the "cad pid" entry from pid table to kern reboot table cad pid is global, and kill cad pid is only used in the root namespace. However, due to pid table root permissions, a non-root user can unshare pid/user...

CVE-2026-80929: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: sysctl: move the "cadpid" entry from pidtable to kernreboottable cadpid is global, and killcadpid is only used in the root namespace. However, due to pidtablerootpermissions, a non-root user can unshare pid/user namespaces and...

CVE-2026-57843: Incorrect Permission Assignment for Critical Resource

NetBSD contains an information disclosure vulnerability in mmopen within sys/dev/mm.c that allows unprivileged local users to obtain real kernel virtual addresses by opening world-accessible devices such as /dev/null or /dev/zero, which incorrectly receive the PKKMEM process flag. Attackers can...

The vulnerability of the ipv4_sysctl_exit_net() function in the net/ipv4/sysctl_net_ipv4.c module of the IPv4 protocol implementation in Linux’s operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the ipv4sysctlexitnet function in the net/ipv4/sysctlnetipv4.c module of the IPv4 protocol implementation in Linux’s kernel relates to incomplete cleanup of temporary or auxiliary resources. Exploiting this vulnerability could allow an attacker to compromise the...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053399)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053399 advisory. In the Linux kernel, the following vulnerability has been resolved: sysctl: always initialize iuid/igid Always initialize iuid/igid inside the sysfs core so...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

Important: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

RHEL 9 : kernel (RHSA-2026:62508)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:62508 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipv4: free...

RHEL 9 : kernel-rt (RHSA-2026:62522)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:62522 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism...

RHEL 9 : kernel (RHSA-2026:62346)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:62346 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipv4: free...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

A flaw was found in the Linux kernel's IPv4 networking component. The ipv4sysctlexitnet function prematurely frees the net-ipv4.sysctllocalreservedports memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can resul...

RHEL 8 : kernel (RHSA-2026:61959)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:61959 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipv4: free...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...

RHEL 8 : kernel (RHSA-2026:61310)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:61310 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipv4: free...