kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe

An incorrect verifier pruning flaw was found in BPF in the Linux Kernel that may lead to unsafe code paths incorrectly marked as safe, resulting in arbitrary read/writes in kernel memory, lateral privilege escalation, and container escape...

Important: Red Hat Security Advisory: kpatch-patch security update

An update for kpatch-patch is now available for Red Hat Enterprise Linux 8.2 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, i...

SUSE-SU-2023:4839-1 Security update for the Linux Kernel (Live Patch 37 for SLE 15 SP3)

This update for the Linux Kernel 5.3.18-15030059138 fixes several issues. The following security issues were fixed: - CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nftables component can be exploited to achieve local privilege escalation. bsc1215097 - CVE-2023-2163: Fixed an...

SUSE-SU-2023:4805-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5)

This update for the Linux Kernel 5.14.21-15050053 fixes several issues. The following security issues were fixed: - CVE-2023-3610: Fixed use-after-free vulnerability in nftables can be exploited to achieve local privilege escalation bsc1213584. - CVE-2023-3777: Fixed a use-after-free vulnerabilit...

kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe

An incorrect verifier pruning flaw was found in BPF in the Linux Kernel that may lead to unsafe code paths incorrectly marked as safe, resulting in arbitrary read/writes in kernel memory, lateral privilege escalation, and container escape...

CVE-2023-2163

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

AZL-29941 CVE-2023-2163 affecting package kernel for versions less than 5.15.133.1-1

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

CVE-2023-2163

Summary of CVE-2023-2163 : The issue is an incorrect verifier pruning in the kernel’s BPF verifier for Linux kernel versions >= 5.4, where unsafe code paths can be marked safe, enabling arbitrary reads/writes in kernel memory, lateral privilege escalation, and container escapes. Connected advi...

CVE-2023-2163 Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

CVE-2023-2163 Incorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege Escalation

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

CVE-2023-2163: Incorrect Calculation

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

Ubuntu 18.04 ESM / 20.04 LTS : Linux kernel (IBM) vulnerabilities (USN-6357-1)

The remote Ubuntu 18.04 ESM / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6357-1 advisory. Daniel Moghimi discovered that some IntelR Processors did not properly clear microarchitectural state after speculative execution of various...

Ubuntu 20.04 LTS : Linux kernel (Azure) vulnerabilities (USN-6349-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6349-1 advisory. Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically...

UBUNTU-CVE-2023-2163

Incorrect verifier pruning in BPF in Linux Kernel =5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape...

kernel: bpf: Do mark_chain_precision for ARG_CONST_ALLOC_SIZE_OR_ZERO

In the Linux kernel, the following vulnerability has been resolved: bpf: Do markchainprecision for ARGCONSTALLOCSIZEORZERO Precision markers need to be propagated whenever we have an ARGCONST style argument, as the verifier cannot consider imprecise scalars to be equivalent for the purposes of...

PT-2023-3564

Name of the Vulnerable Software and Affected Versions kernel-image-rpi-un version 6.1.77-alt1 Linux Kernel versions =5.4 kernel-image-std-def version 5.10.179-alt1 Linux Kernel 5.3.18-150200 24 166 Description The Linux kernel is susceptible to a vulnerability stemming from an incorrect verifier...