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Kernel Files

Red Hat Security Advisory 2017-2931-01
Posted Oct 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2931-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2016-8399, CVE-2017-1000111, CVE-2017-1000112, CVE-2017-11176, CVE-2017-14106, CVE-2017-7184, CVE-2017-7541, CVE-2017-7542, CVE-2017-7558
MD5 | c1dbd6840e2e16c4205c17a6e62ec9fa
Red Hat Security Advisory 2017-2930-01
Posted Oct 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2930-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2016-8399, CVE-2017-1000111, CVE-2017-1000112, CVE-2017-11176, CVE-2017-14106, CVE-2017-7184, CVE-2017-7541, CVE-2017-7542, CVE-2017-7558
MD5 | bde81e8df0854f9e0da92d2d031727b7
Red Hat Security Advisory 2017-2918-01
Posted Oct 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2918-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000111, CVE-2017-1000112, CVE-2017-11176, CVE-2017-14106, CVE-2017-14340, CVE-2017-7184, CVE-2017-7541, CVE-2017-7542, CVE-2017-7558
MD5 | 8518b2d326398c1a3d949f4ea8241046
Windows Kernel Pool Ntfs!LfsRestartLogFile Memory Disclosure
Posted Oct 16, 2017
Authored by Google Security Research, mjurczyk

This advisory discusses a Microsoft Windows kernel pool memory disclosure into NTFS metadata ($LogFile) in Ntfs!LfsRestartLogFile.

tags | advisory, kernel
systems | windows
advisories | CVE-2017-11817
MD5 | f4472007f780b633aa086c20fa3c9ee8
Windows Kernel Pool nt!RtlpCopyLegacyContextX86 Memory Disclosure
Posted Oct 16, 2017
Authored by Google Security Research, mjurczyk

The Microsoft Windows kernel pool suffers from a nt!RtlpCopyLegacyContextX86 related memory disclosure vulnerability.

tags | advisory, kernel
systems | windows
advisories | CVE-2017-11784
MD5 | e7fc69388cdf09d854702265504b52eb
Kernel Live Patch Security Notice LSN-0031-1
Posted Oct 11, 2017
Authored by Benjamin M. Romer

net/xfrm/xfrm_policy.c in the Linux kernel through 4.12.3, when CONFIG_XFRM_MIGRATE is enabled, does not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allows local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message. Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash).

tags | advisory, denial of service, kernel, local, tcp
systems | linux
advisories | CVE-2017-11600
MD5 | 06dff9f017da1957172af525b25cfd62
Ubuntu Security Notice USN-3445-2
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3445-2 - USN-3445-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 ESM. Eyal Itkin discovered that the IP over IEEE 1394 implementation in the Linux kernel contained a buffer overflow when handling fragmented packets. A remote attacker could use this to possibly execute arbitrary code with administrative privileges. Various other issues were also addressed.

tags | advisory, remote, overflow, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-8633, CVE-2017-14106
MD5 | 60f5a7002950560d9fe7443edc6540cf
Ubuntu Security Notice USN-3443-3
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3443-3 - Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2017-14106
MD5 | cf13fc16151a8ca7752a3f37d942f30b
Ubuntu Security Notice USN-3444-2
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3444-2 - USN-3444-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. Jan H. Schonherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could use this to cause a denial of service or possibly gain administrative privileges in the host. Various other issues were also addressed.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-12134, CVE-2017-14106, CVE-2017-14140
MD5 | 35877454252148901b89f4dd6950a1f2
Ubuntu Security Notice USN-3445-1
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3445-1 - Eyal Itkin discovered that the IP over IEEE 1394 implementation in the Linux kernel contained a buffer overflow when handling fragmented packets. A remote attacker could use this to possibly execute arbitrary code with administrative privileges. Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, overflow, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2016-8633, CVE-2017-14106
MD5 | 4f1cff5d96815c2ffb8075194ffc53da
Ubuntu Security Notice USN-3444-1
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3444-1 - Jan H. Schonherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could use this to cause a denial of service or possibly gain administrative privileges in the host. Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2017-12134, CVE-2017-14106, CVE-2017-14140
MD5 | 69e05e53e6c024f8c444c2dfccbfb315
Ubuntu Security Notice USN-3443-2
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3443-2 - USN-3443-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.04. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.04 for Ubuntu 16.04 LTS. It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-1000255, CVE-2017-14106
MD5 | 91164309cd3b29bf3210db52dcd49238
Ubuntu Security Notice USN-3443-1
Posted Oct 11, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3443-1 - It was discovered that on the PowerPC architecture, the kernel did not properly sanitize the signal stack when handling sigreturn. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Andrey Konovalov discovered that a divide-by-zero error existed in the TCP stack implementation in the Linux kernel. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, tcp
systems | linux, ubuntu
advisories | CVE-2017-1000255, CVE-2017-14106
MD5 | 0b9e8c257d9b94091abf3f9093e86b5b
Red Hat Security Advisory 2017-2869-01
Posted Oct 10, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2869-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A race condition was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-7533
MD5 | fa0b3e7958d614ab26779f8cc15a4624
Red Hat Security Advisory 2017-2863-01
Posted Oct 5, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2863-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: Kernel memory corruption due to a buffer overflow was found in brcmf_cfg80211_mgmt_tx() function in Linux kernels from v3.9-rc1 to v4.13-rc1. The vulnerability can be triggered by sending a crafted NL80211_CMD_FRAME packet via netlink. This flaw is unlikely to be triggered remotely as certain userspace code is needed for this. An unprivileged local user could use this flaw to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.

tags | advisory, overflow, kernel, local
systems | linux, redhat
advisories | CVE-2017-7541
MD5 | cb33436c96d42d5db1fc1d2f9574ca72
Linux Kernel 4-14-rc1 Denial Of Service
Posted Oct 2, 2017
Authored by Wang Chenyu

Linux kernel versions prior to 4-14-rc3 suffer from a local denial of service vulnerability.

tags | exploit, denial of service, kernel, local
systems | linux
advisories | CVE-2017-14489
MD5 | 987188817ef93d6bea672713c4730cdd
Red Hat Security Advisory 2017-2795-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2795-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | 782c2e27051a697d8e69199396321a12
Red Hat Security Advisory 2017-2802-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2802-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | d39751ef6adcba370ff80a98399f9dbb
Red Hat Security Advisory 2017-2801-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2801-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | e9897bc798d46a7eff4de8ade0959796
Red Hat Security Advisory 2017-2796-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2796-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | 18a4b1d385ad290f8f0e8e1aeeb2bafb
Red Hat Security Advisory 2017-2793-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2793-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | b880ab955e50aa63de3db372b6ee4d8f
Red Hat Security Advisory 2017-2794-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2794-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | 3b9ee8d3b33223c5cde0633d2e1afd9e
Red Hat Security Advisory 2017-2797-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2797-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | ff2bd3b0247dd9a8ddbda0178c22279f
Red Hat Security Advisory 2017-2798-01
Posted Sep 27, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2798-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | 83bd6ed563e5a67566dceb5b2b3dce0d
Red Hat Security Advisory 2017-2800-01
Posted Sep 26, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2800-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable, the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID PIE binary could use this flaw to escalate their privileges on the system.

tags | advisory, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000253
MD5 | f624242496e3e9e5bd4a524d360f827d
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