kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory

A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is only accessible to privileged users with CAPSYSADMIN. This flaw allows a local user who can insert eBPF instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all syste...

kernel: protection of stack pointer against speculative pointer arithmetic can be bypassed to leak content of kernel memory

A flaw was found in the Linux kernel's eBPF verification code. By default, accessing the eBPF verifier is only accessible to privileged users with CAPSYSADMIN. This flaw allows a local user who can insert eBPF instructions, to use the eBPF verifier to abuse a spectre-like flaw and infer all syste...

kernel: out-of-bounds reads and writes due to enforcing incorrect limits for pointer arithmetic operations by BPF verifier

A flaw was found in kernel/bpf/verifier.c in BPF in the Linux kernel. An incorrect limit is enforced for pointer arithmetic operations which can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation. The highest threat from this vulnerability ...

kernel: setsockopt System Call Untrusted Pointer Dereference Information Disclosure

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...

kernel: Linux kernel eBPF RINGBUF map oversized allocation

A flaw out of bound memory write in the Linux kernel BPF subsystem was found in the way user writes to BPF ring buffer too fast, so larger buffer than available memory could be allocated. A local user could use this flaw to crash the system or possibly escalate their privileges on the system...

The vulnerability of the eBPF subsystem in the Linux operating system, related to reading beyond the buffer in memory, allows a hacker to execute arbitrary code in the kernel context.

The vulnerability of the eBPF subsystem in the Linux operating system is related to reading beyond the buffer boundaries in memory. Exploiting this vulnerability allows an attacker to execute arbitrary code in the kernel context...

USN-5091-2 linux-raspi, linux-raspi-5.4 vulnerabilities

Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. CVE-2021-33624 It was...

The vulnerability in the kernel/bpf/verifier.c component of the Linux operating system allows a hacker to elevate their privileges to the level of root.

The vulnerability in the kernel component bpf/verifier.c of the Linux operating system is related to writing beyond the buffer boundaries in memory. Exploiting this vulnerability can allow an attacker to elevate their privileges to the root level...

USN-5096-1 linux-oem-5.13 vulnerabilities

Valentina Palmiotti discovered that the iouring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. CVE-2021-41073 Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect again...

USN-5086-1 linux, linux-hwe, linux-hwe-5.11, linux-hwe-5.4 vulnerability

Johan Almbladh discovered that the eBPF JIT implementation for IBM s390x systems in the Linux kernel miscompiled operations in some situations, allowing circumvention of the BPF verifier. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code...

kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation

A flaw was found in the Linux kernels eBPF implementation. By default, accessing the eBPF verifier is only accessible to privileged users with CAPSYSADMIN. A local user with the ability to insert eBPF instructions can abuse a flaw in eBPF to corrupt memory. The highest threat from this...

In the Linux kernel through 5.13.7 an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.

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DEBIAN-CVE-2021-34556

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack...

DEBIAN-CVE-2021-35477

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled...

PT-2021-4234

Name of the Vulnerable Software and Affected Versions Linux kernel versions up to 5.13.7 Description The issue allows an unprivileged BPF program to obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack. This is possible because the protection mechanis...

PT-2024-11299 · Linux +1 · Linux Kernel +1

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A potential memory leak has been identified in the Linux kernel, specifically in the bpf and sockmap components. The issue arises when the skb linearize function is needed but fails,...

USN-5003-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-dell300x, linux-gcp, linux-gcp-4.15, linux-hwe, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. CVE-2021-3609 It was discovered that the eBPF implementation in the Linux kernel...

USN-4999-1 linux, linux-aws, linux-aws-5.8, linux-azure, linux-azure-5.8, linux-gcp, linux-gcp-5.8, linux-hwe-5.8, linux-kvm, linux-oracle, linux-oracle-5.8, linux-raspi vulnerabilities

Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. CVE-2021-3609 Piotr Krysiuk discovered that the eBPF implementation in the Linux...

Linux kernel 安全漏洞

Linux kernel is the kernel used by the Linux Foundation's open source operating system, Linux. Linux Kernel is vulnerable to information leakage, which can be exploited by attackers to obtain the contents of arbitrary kernel memory information by executing a specially crafted BPF program...

kernel: Speculation on pointer arithmetic against bpf_context pointer

A flaw was found in the Linux kernels eBPF verification code. By default accessing the eBPF verifier is only accessible to privileged users with CAPSYSADMIN. A local user with the ability to insert eBPF instructions can use the eBPF verifier to abuse a spectre like flaw where they can infer all...