CVE-2023-3640 Kernel: x86/mm: a per-cpu entry area leak was identified through the init_cea_offsets function when prefetchnta and prefetcht2 instructions being used for the per-cpu entry area mapping to the user space

A possible unauthorized memory access flaw was found in the Linux kernel's cpuentryarea mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize per-cpu entry area' feature was implement...

The vulnerability of the init_cea_offsets() function in the /arch/x86/mm/cpuEntryArea.c file of the Linux kernel’s memory management subsystem allows a attacker to access protected information and enhance their privileges.

The vulnerability of the initceaoffsets function in the /arch/x86/mm/cpuEntryArea.c file, belonging to the memory management subsystem of the Linux operating system, is related to the accessibility of the per-cpu memory area for user address space. Exploiting this vulnerability could allow an...

CVE-2023-3640

A possible unauthorized memory access flaw was found in the Linux kernel's cpuentryarea mapping of X86 CPU data to memory, where a user may guess the location of exception stacks or other important data. Based on the previous CVE-2023-0597, the 'Randomize per-cpu entry area' feature was implement...

USN-6206-1 linux-oem-5.17 vulnerabilities

Hangyu Hua discovered that the Flower classifier implementation in the Linux kernel contained an out-of-bounds write vulnerability. An attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2023-35788, LP: 2023577 It was discovered that the NTFS...

Exploit for Observable Discrepancy in Linux Linux_Kernel

SCTF2023kernelpwn SCTF 2023 kernel pwn Off-topic: an adverti...

SUSE CVE-2020-36694

An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAPNETADMIN capability in an...

DEBIAN-CVE-2020-36694

An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAPNETADMIN capability in an...

UBUNTU-CVE-2020-36694

An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAPNETADMIN capability in an...

Linux kernel 资源管理错误漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. The Linux kernel suffers from a resource management error vulnerability that stems from the incorrect handling of per-CPU sequence counts during concurrent iptables rule...

kernel: xfrm: Update ipcomp_scratches with NULL when freed

In the Linux kernel, the following vulnerability has been resolved: xfrm: Update ipcompscratches with NULL when freed Currently if ipcompallocscratches fails to allocate memory ipcompscratches holds obsolete address. So when we try to free the percpu scratches using ipcompfreescratches it tries t...

SUSE CVE-2012-0810

The int3 handler in the Linux kernel before 3.3 relies on a per-CPU debug stack, which allows local users to cause a denial of service stack corruption and panic via a crafted application that triggers certain lock contention...

SUSE CVE-2019-19768

In the Linux kernel 5.4.0-rc2, there is a use-after-free read in the blkaddtrace function in kernel/trace/blktrace.c which is used to fill out a blkiotrace structure and place it in a per-cpu sub-buffer...

Fedora 37 : kernel (2023-4006357f7e)

The remote Fedora 37 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-4006357f7e advisory. The 6.1.9 stable kernel update contains a number of important fixes across the tree. Tenable has extracted the preceding description block directly...

kernel: netfilter: use get_random_u32 instead of prandom

In the Linux kernel, the following vulnerability has been resolved: netfilter: use getrandomu32 instead of prandom bh might occur while updating per-cpu rndstate from user context, ie. localout path. BUG: using smpprocessorid in preemptible 00000000 code: nginx/2725 caller is...

kernel: scsi: lpfc: Fix call trace observed during I/O with CMF enabled

A vulnerability has been identified in the lpfc module within the Linux kernel. This flaw occurs because the driver attempts to access per-CPU data from a preemptible context using an incorrect function. This improper handling of critical data can lead to system instability and result in a...

kernel: netfilter: use get_random_u32 instead of prandom

In the Linux kernel, the following vulnerability has been resolved: netfilter: use getrandomu32 instead of prandom bh might occur while updating per-cpu rndstate from user context, ie. localout path. BUG: using smpprocessorid in preemptible 00000000 code: nginx/2725 caller is...

kernel: scsi: lpfc: Fix call trace observed during I/O with CMF enabled

A vulnerability has been identified in the lpfc module within the Linux kernel. This flaw occurs because the driver attempts to access per-CPU data from a preemptible context using an incorrect function. This improper handling of critical data can lead to system instability and result in a...

GSD-2022-1003755 crypto: cryptd - Protect per-CPU resource by disabling BH.

crypto: cryptd - Protect per-CPU resource by disabling BH. This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.198 by commit...

GSD-2022-1003578 crypto: cryptd - Protect per-CPU resource by disabling BH.

crypto: cryptd - Protect per-CPU resource by disabling BH. This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.121 by commit...

PT-2025-8631

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A vulnerability in the Linux kernel has been resolved. The issue was related to the use of prandom instead of get random u32 in the netfilter component. This could potentially lead to a...