Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3676-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3676-1 advisory. Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker...

Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-3678-1)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3678-1 advisory. Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker...

USN-3676-2: Linux kernel (Xenial HWE) vulnerabilities

USN-3676-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not...

USN-3676-2 linux-lts-xenial, linux-aws vulnerabilities

USN-3676-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not...

USN-3677-1: Linux kernel vulnerabilities

It was discovered that the netfilter subsystem of the Linux kernel did not properly validate ebtables offsets. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2018-1068 Wen Xu discovered that the ext4 filesystem implementation in t...

USN-3676-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service system crash when mounted. CVE-2018-1092, CVE-2018-1093 It...

USN-3676-1: Linux kernel vulnerabilities

Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service system crash when mounted. CVE-2018-1092, CVE-2018-1093 It...

Linux ext4: out-of-bounds memcpy via non-inline system.data xattr(CVE-2018-11412)

ext4 can store data for small regular files as "inline data", meaning that the data is stored inside the corresponding inode instead of in separate blocks. Inline data is stored in two places: The first 60 bytes go in the iblock field in the inode which normally contains a list of blocks instead,...

Debian DLA-1392-1 : linux security update

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service. CVE-2018-1093 Wen Xu reported that a crafted ext4 filesystem image could trigger an out-of-bounds read in the ext4validblockbitmap function. A local user able to mount arbitrary filesystems coul...

Linux Kernel ext4_read_inline_data() Memory Corruption

ext4 can store data for small regular files as "inline data", meaning that the data is stored inside the corresponding inode instead of in separate blocks. Inline data is stored in two places: The first 60 bytes go in the iblock field in the inode which normally contains a list of blocks instead,...

Linux Kernel 4.16.11 #LinuxKernel - #ext4_read_inline_data() Memory Corruption Exploit

Exploit for linux platform in category dos / poc ext4 can store data for small regular files as "inline data", meaning that the data is stored inside the corresponding inode instead of in separate blocks. Inline data is stored in two places: The first 60 bytes go in the iblock field in the inode...

Linux Kernel 4.16.11 - ext4_read_inline_data() Memory Corruption

Linux Kernel 4.16.11 - ext4readinlinedata Memory Corruption ext4 can store data for small regular files as "inline data", meaning that the data is stored inside the corresponding inode instead of in separate blocks. Inline data is stored in two places: The first 60 bytes go in the iblock field in...

Linux Kernel < 4.16.11 - 'ext4_read_inline_data()' Memory Corruption

ext4 can store data for small regular files as "inline data", meaning that the data is stored inside the corresponding inode instead of in separate blocks. Inline data is stored in two places: The first 60 bytes go in the iblock field in the inode which normally contains a list of blocks instead,...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on the upstream 4.14.44 and fixes at least the following security issues: The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial...

Linux kernel memory corruption vulnerability (CNVD-2018-10582)

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A security vulnerability exists in Linux kernel versions 4.13 through 4.16.11, which stems from the 'ext4readinlinedata' function in the fs/ext4/inline.c file using an...

The vulnerability of the ext4_fill_super function in the Linux operating system allows a hacker to cause a service failure.

The vulnerability of the ext4fillsuper function fs/ext4/super.c in the Linux operating system is related to a pointer manipulation error. Exploiting this vulnerability can allow an attacker, acting remotely, to cause a service failure by using a specially crafted version of the ext4 file system...

The vulnerability of the ext4_iget function in the Linux operating system’s kernel allows a hacker to cause a service failure.

The vulnerability of the ext4iget function fs/ext4/inode.c in the Linux kernel is related to a pointer arithmetic error. Exploiting this vulnerability can allow an attacker, operating remotely, to cause a service failure by using a specially crafted version of the ext4 file system...

The vulnerability of the ext4_valid_block_bitmap function in the Linux operating system allows a hacker to trigger a service failure.

The vulnerability of the ext4validblockbitmap function fs/ext4/balloc.c in the Linux operating system is related to reading beyond the buffer boundaries in memory. Exploitation of this vulnerability can allow a malicious actor to cause service failures by using a specially crafted version of the...

The vulnerability of the ext4_xattr_checkEntries function in the Linux operating system’s kernel allows a hacker to cause a service failure.

The vulnerability of the ext4xattrcheckEntries function fs/ext4/xattr.c in the Linux kernel is related to a pointer arithmetic error. Exploitation of this vulnerability could allow an attacker, operating remotely, to cause service failures by manipulating a specially crafted version of the ext4...

CVE-2018-11412

In the Linux kernel 4.13 through 4.16.11, ext4readinlinedata in fs/ext4/inline.c performs a memcpy with an untrusted length value in certain circumstances involving a crafted filesystem that stores the system.data extended attribute value in a dedicated inode...