CVE-2021-3444 Linux kernel bpf verifier incorrect mod32 truncation

The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure kernel...

CVE-2021-3444

The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure kernel...

UBUNTU-CVE-2021-3444

The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure kernel...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. Linux kernel suffers from a security vulnerability that stems from the bpf checker not handling mod32 target register truncation correctly. This leads to information disclosure...

CVE-2021-3444

The bpf verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker with the ability to load bpf programs could use this gain out-of-bounds reads in kernel memory leading to information disclosure kernel...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-4879-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4879-1 advisory. 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...

Updated kernel-linus packages fix security issues

This kernel-linus update is based on upstream 5.10.25 and fixes at least the following security issues: A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRMIOCTLNOUVEAUCHANNELALLOC. This...

Updated kernel packages fix security issues

This kernel update is based on upstream 5.10.25 and fixes at least the following security issues: Unprivileged BPF programs running on affected systems can bypass the protection and execute speculatively out-of-bounds loads from any location within the kernel memory. This can be abused to extract...

MGASA-2021-0152 Updated kernel-linus packages fix security issues

This kernel-linus update is based on upstream 5.10.25 and fixes at least the following security issues: A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRMIOCTLNOUVEAUCHANNELALLOC. This...

MGASA-2021-0151 Updated kernel packages fix security issues

This kernel update is based on upstream 5.10.25 and fixes at least the following security issues: Unprivileged BPF programs running on affected systems can bypass the protection and execute speculatively out-of-bounds loads from any location within the kernel memory. This can be abused to extract...

DEBIAN-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...

DEBIAN-CVE-2020-27170

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This...

AZL-6525 CVE-2020-27170 affecting package kernel for versions less than 5.10.78.1-1

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This...

CVE-2020-27170

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This...

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-4884-1: Linux kernel (OEM) vulnerabilities

Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service system crash. CVE-2021-20194 It was discovered that the priority inheritance futex...

USN-4884-1 linux-oem-5.10 vulnerabilities

Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service system crash. CVE-2021-20194 It was discovered that the priority inheritance futex...

Linux kernel 安全漏洞

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. A difference-one error vulnerability exists in kernel/bpf/verifier.c in Linux kernel versions prior to 5.11.8. An...

Linux kernel 安全漏洞

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. An information disclosure vulnerability exists in kernel/bpf/verifier.c in Linux kernel versions prior to 5.11.8. An...

Privilege Escalation

linux is vulnerable to privilege escalation. The vulnerability exists if kernel compiled with config params CONFIGBPFSYSCALL=y , CONFIGBPF=y , CONFIGCGROUPS=y , CONFIGCGROUPBPF=y, and CONFIGHARDENEDUSERCOPY not set, and BPF hook to getsockopt is registered. During the execution of BPF, the local...