kernel: memory leak when merging buffers in SCSI IO vectors

It was found that in the Linux kernel through v4.14-rc5, biomapuseriov and biounmapuser in 'block/bio.c' do unbalanced pages refcounting if IO vector has small consecutive buffers belonging to the same page. bioaddpcpage merges them into one, but the page reference is never dropped, causing a...

Memory corruption

The biomapuseriov and biounmapuser functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bioaddpcpage function merges them into one, but the page reference is never dropped. This...

CVE-2017-12190

The biomapuseriov and biounmapuser functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bioaddpcpage function merges them into one, but the page reference is never dropped. This...

CVE-2017-12190

The biomapuseriov and biounmapuser functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bioaddpcpage function merges them into one, but the page reference is never dropped. This...

CVE-2017-12190

The biomapuseriov and biounmapuser functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bioaddpcpage function merges them into one, but the page reference is never dropped. This...

CVE-2017-12190

CVE-2017-12190 affects the Linux kernel before 4.13.8. The issue arises in the SCSI I/O path where bio_map_user_iov and bio_unmap_user perform unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one,...

CVE-2017-12190: Uncontrolled Resource Consumption

The biomapuseriov and biounmapuser functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bioaddpcpage function merges them into one, but the page reference is never dropped. This...

Amazon Linux AMI : kernel (ALAS-2017-925)

Incorrect updates of uninstantiated keys crash the kernel A vulnerability was found in the key management subsystem of the Linux kernel. An update on an uninstantiated key could cause a kernel panic, leading to denial of service DoS. CVE-2017-15299 Memory leak when merging buffers in SCSI IO...

OracleVM 3.4 : Unbreakable / etc (OVMSA-2017-0169)

The remote OracleVM system is missing necessary patches to address critical security updates : - thp: run vmaadjusttranshuge outside immaprwsem Kirill A. Shutemov Orabug: 27026180 - selinux: fix off-by-one in setprocattr Stephen Smalley Orabug: 27001717 CVE-2017-2618 CVE-2017-2618 CVE-2017-2618 -...

Virtuozzo 7 : readykernel-patch (VZA-2017-097)

According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities : - A flaw was found in the Linux networking subsystem where a local attacker with CAPNETADMIN capabilities could cause ...

F5 Networks BIG-IP : Linux kernel vulnerability (K81211720)

The tcpspliceread function in net/ipv4/tcp.c in the Linux kernel before 4.9.11 allows remote attackers to cause a denial of service infinite loop and soft lockup via vectors involving a TCP packet with the URG flag. CVE-2017-6214 C Tenable Network Security, Inc. The descriptive text and package...

CVE-2017-8797

The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used a...

CVE-2017-8797

CVE-2017-8797 affects the Linux kernel NFSv4 server. A remote attacker can send NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operands in UDP; an uninitialized layout type is used as an array index, causing an OOPS and potentially a system DoS via knfsd soft-lockup. Affected: Linux kernel versions prior ...

CVE-2017-8797

The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used a...

CVE-2017-8797: Improper Validation of Array Index

The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used a...

openSUSE Security Update : the Linux Kernel (openSUSE-2017-734) (Stack Clash)

The openSUSE Leap 42.2 kernel was updated to 4.4.73 to receive security and bugfixes. The following security bugs were fixed : - CVE-2017-1000364: An issue was discovered in the size of the stack guard page on Linux, specifically a 4k stack guard page is not sufficiently large and can be 'jumped'...

Linux Kernel NFSv4 Denial of Service Vulnerability

Linux kernel is the kernel used by the operating system Linux, released by the Linux Foundation in the U.S. NFSv4 server is one of the distributed file system servers. A security vulnerability exists in the NFSv4 server in versions of Linux kernel prior to 4.11.3, which stems from the program...

Security update for the Linux Kernel (important)

The openSUSE Leap 42.2 kernel was updated to 4.4.73 to receive security and bugfixes. The following security bugs were fixed: - CVE-2017-1000364: An issue was discovered in the size of the stack guard page on Linux, specifically a 4k stack guard page is not sufficiently large and can be "jumped"...

EulerOS 2.0 SP1 : kernel (EulerOS-SA-2017-1057)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol DCCP implementation freed SKB socket buffer...

EulerOS 2.0 SP2 : kernel (EulerOS-SA-2017-1056)

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol DCCP implementation freed SKB socket buffer...