UBUNTU-CVE-2020-27171

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error with a resultant integer underflow affecting out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information...

USN-4879-1: Linux kernel vulnerabilities

It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad-hoc SSIDs. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2020-36158 Loris Reiff discovered that the BPF implementation in t...

USN-4878-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities

It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad-hoc SSIDs. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2020-36158 Ryota Shiga discovered that the sockopt BPF hooks in th...

USN-4878-1: Linux kernel vulnerabilities

It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad-hoc SSIDs. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2020-36158 Ryota Shiga discovered that the sockopt BPF hooks in th...

MGASA-2021-0099 Updated kernel packages fix security vulnerabilities

This kernel update is based on upstream 5.10.19 and fixes at least the following security issues: There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y, CONFIGBPF=y, CONFIGCGROUPS=y, CONFIGCGROUPBPF=y, CONFIGHARDENEDUSERCOPY...

linux kernel heap overflow vulnerability

The Linux kernel is a computer operating system kernel written in C and assembly languages, compliant with the POSIX standard, and distributed under the GNU General Public License. A heap overflow vulnerability exists in the cgroupbpfrunfiltergetsockopt function in linux kernel versions 5.2 and...

CVE-2021-20194

There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y , CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. As result of BPF execution, the local user...

DEBIAN-CVE-2021-20194

There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y , CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. As result of BPF execution, the local user...

AZL-6529 CVE-2021-20194 affecting package kernel for versions less than 5.15.26.1-1

There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y , CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. As result of BPF execution, the local user...

Design/Logic Flaw

There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y , CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. As result of BPF execution, the local user...

UBUNTU-CVE-2021-20194

There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y , CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. As result of BPF execution, the local user...

CVE-2021-20194

There is a vulnerability in the linux kernel versions higher than 5.2 if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y , CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. As result of BPF execution, the local user...

CVE-2021-20194

CVE-2021-20194 affects Linux kernels 5.2+ when compiled with CONFIG_BPF_SYSCALL=y, CONFIG_BPF=y, CONFIG_CGROUPS=y, CONFIG_CGROUP_BPF=y, and without hardened_usercopy; a BPF execution bug in __cgroup_bpf_run_filter_getsockopt() can cause a heap overflow. Local attackers can potentially cause DoS o...

CVE-2021-20239

A flaw was found in the Linux kernel in versions before 5.4.92 in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality...

CVE-2021-20239

A flaw was found in the BPF protocol. This flaw allows an attacker with a local account to leak information about kernel internal addresses. The highest threat from this vulnerability is to confidentiality. Mitigation Loading a filter is a privileged CAPSYSADMIN or root operation. Once any filter...

CVE-2021-20194

A flaw buffer overflow in the Linux kernel BPF subsystem was found in the way user running BPF script calling getsockopt. A local user could use this flaw to crash the system or possibly escalate their privileges on the system. Mitigation The default Red Hat Enterprise Linux kernel prevents...

Firejail: Multiple vulnerabilities

Background A SUID program that reduces the risk of security breaches by restricting the running environment of untrusted applications using Linux namespaces and seccomp-bpf. Description Multiple vulnerabilities have been discovered in Firejail. Please review the CVE identifiers referenced below f...

The vulnerability in the kernel/bpf/verifier.c component of the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability in the kernel/bpf/verifier.c component of the Linux operating system is related to the execution of operations beyond the buffer boundaries in memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the...

openSUSE Security Update : the Linux Kernel (openSUSE-2020-2034)

The openSUSE Leap 15.1 kernel was updated to receive various security and bugfixes. The following security bugs were fixed : - CVE-2020-28915: A buffer over-read at the framebuffer layer in the fbcon code could be used by local attackers to read kernel memory, aka CID-6735b4632def bnc1178886. -...

Vulnerability of the `scalar32_min_max_or` function in the Linux operating system’s kernel/bpf/verifier.c file, which allows a hacker to trigger a service failure

The vulnerability of the scalar32minmaxor function in the Linux kernel’s bpf/verifier.c file is related to operations that go beyond the buffer boundaries in memory. Exploiting this vulnerability could allow an attacker to trigger a system failure...