kernel: eBPF 32-bit source register truncation on div/mod

A flaw was found in the Linux kernel’s eBPF verification code, where the eBPF 32-bit div/mod source register truncation could lead to out-of-bounds reads and writes. By default, accessing the eBPF verifier is only possible to privileged users with CAPSYSADMIN. This flaw allows a local user who ca...

PT-2021-7382 · Linux +5 · Linux Kernel +5

Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 5.16 rc2 Description: A race condition was found in the Linux kernel's ebpf verifier between bpf map update elem and bpf map freeze due to a missing lock in kernel/bpf/syscall.c. This issue allows a local user...

Security update for the Linux Kernel (important)

openSUSE Security Update: Security update for the Linux Kernel Announcement ID: openSUSE-SU-2021:1460-1 Rating: important References: 1065729 1085030 1100416 1129735 1152489 1154353 1156395 1157177 1167773 1172073 1173604 1176940 1184673 1185762 1186109 1187167 1188563 1188876 1188983 1188985...

MGASA-2021-0490 Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.10.75 and fixes at least the following security issues: A memory leak in the ccprunaesgcmcmd function in drivers/crypto/ ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a denial of service memory consumption CVE-2021-3744. A memory...

MGASA-2021-0489 Updated kernel packages fix security vulnerabilities

This kernel update is based on upstream 5.10.75 and fixes at least the following security issues: A memory leak in the ccprunaesgcmcmd function in drivers/crypto/ ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a denial of service memory consumption CVE-2021-3744. A memory leak...

Updated kernel packages fix security vulnerabilities

This kernel update is based on upstream 5.10.75 and fixes at least the following security issues: A memory leak in the ccprunaesgcmcmd function in drivers/crypto/ ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a denial of service memory consumption CVE-2021-3744. A memory leak...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.10.75 and fixes at least the following security issues: A memory leak in the ccprunaesgcmcmd function in drivers/crypto/ ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a denial of service memory consumption CVE-2021-3744. A memory...

CVE-2021-34866

A vulnerability was found in Linux Kernel, where a type confusion problem in checkmapfunccompatibility may lead to free arbitrary kernel memory. Mitigation The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivilegedbpfdisabled...

Fedora 35 : kernel (2021-79cbbefebe)

The remote Fedora 35 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2021-79cbbefebe advisory. - preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication...

Linux Kernel eBPF Type Confusion Privilege Escalation Vulnerability

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF...

CVE-2021-20320

A flaw was found in s390 eBPF JIT in bpfjitinsn in arch/s390/net/bpfjitcomp.c in the Linux kernel. In this flaw, a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem. Mitigation Mitigation for this issue is either not available or the...

AZL-6597 CVE-2021-41864 affecting package kernel for versions less than 5.10.78.1-1

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

Integer overflow

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

UBUNTU-CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...

CVE-2021-41864

CVE-2021-41864 affects the Linux kernel (pre-5.14.12) in prealloc_elems_and_freelist() within kernel/bpf/stackmap.c. An unprivileged local user can trigger an eBPF multiplication overflow, causing an out-of-bounds write and potential memory corruption or system crash. The issue is fixed in Linux ...

CVE-2021-41864

preallocelemsandfreelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write...