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CVE-2018-7757

Status Candidate

Overview

Memory leak in the sas_smp_get_phy_events function in drivers/scsi/libsas/sas_expander.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (memory consumption) via many read accesses to files in the /sys/class/sas_phy directory, as demonstrated by the /sys/class/sas_phy/phy-1:0:12/invalid_dword_count file.

Related Files

Ubuntu Security Notice USN-3698-2
Posted Jul 3, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3698-2 - USN-3698-1 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. It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130, CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927, CVE-2018-7755, CVE-2018-7757
SHA-256 | 3a1e12e3782c7d4798f3d9810f6fccc5915c7ad2dec33af797f2a9aa81fb5037
Ubuntu Security Notice USN-3697-2
Posted Jul 3, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3697-2 - It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service. Jann Horn discovered that the 32 bit adjtimex syscall implementation for 64 bit Linux kernels did not properly initialize memory returned to user space in some situations. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2018-1130, CVE-2018-11508, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927, CVE-2018-7755, CVE-2018-7757
SHA-256 | c9a9b6f9415eee0a015beb8e44d16a31b4242d4134fa1daff8f7c2ac1adc0f9d
Ubuntu Security Notice USN-3697-1
Posted Jul 3, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3697-1 - It was discovered that a null pointer dereference vulnerability existed in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service. Jann Horn discovered that the 32 bit adjtimex syscall implementation for 64 bit Linux kernels did not properly initialize memory returned to user space in some situations. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2018-1130, CVE-2018-11508, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927, CVE-2018-7755, CVE-2018-7757
SHA-256 | 55c8f38eb3a5a5b9ca0719a8cf82aed6fd3c1159902999681470b031b1f5489b
Ubuntu Security Notice USN-3698-1
Posted Jul 2, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3698-1 - It was discovered that the nested KVM implementation in the Linux kernel in some situations did not properly prevent second level guests from reading and writing the hardware CR8 register. A local attacker in a guest could use this to cause a denial of service. Fan Wu, Haoran Qiu, and Shixiong Zhao discovered that the associative array implementation in the Linux kernel sometimes did not properly handle adding a new entry. 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
systems | linux, ubuntu
advisories | CVE-2017-12154, CVE-2017-12193, CVE-2017-15265, CVE-2018-1130, CVE-2018-3665, CVE-2018-5750, CVE-2018-5803, CVE-2018-6927, CVE-2018-7755, CVE-2018-7757
SHA-256 | 7da0a1087ba0d19f5b16753982535d7adcdc67fada9d245a7c967312fca4844c
Ubuntu Security Notice USN-3654-2
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3654-2 - USN-3654-1 fixed vulnerabilities and added mitigations 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. Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-17975, CVE-2017-18193, CVE-2017-18222, CVE-2018-1065, CVE-2018-1068, CVE-2018-1130, CVE-2018-3639, CVE-2018-5803, CVE-2018-7480, CVE-2018-7757, CVE-2018-7995, CVE-2018-8781, CVE-2018-8822
SHA-256 | de22c970ed2387a5b65d9f771bda19a47f769cd6937f436e2540fe3278eafdcc
Ubuntu Security Notice USN-3654-1
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3654-1 - Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. 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
systems | linux, ubuntu
advisories | CVE-2017-17975, CVE-2017-18193, CVE-2017-18222, CVE-2018-1065, CVE-2018-1068, CVE-2018-1130, CVE-2018-3639, CVE-2018-5803, CVE-2018-7480, CVE-2018-7757, CVE-2018-7995, CVE-2018-8781, CVE-2018-8822
SHA-256 | 5f261dbe5831c41c0bd4f2b983165daf32e4b78c0ecc0db3052a95ea2f5075e3
Ubuntu Security Notice USN-3656-1
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3656-1 - Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition existed in the F2FS 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
systems | linux, ubuntu
advisories | CVE-2017-17975, CVE-2017-18193, CVE-2017-18222, CVE-2018-1065, CVE-2018-1068, CVE-2018-1130, CVE-2018-5803, CVE-2018-7480, CVE-2018-7757, CVE-2018-7995, CVE-2018-8781, CVE-2018-8822
SHA-256 | a9f3839c7a8545a6f6e3bf93c8de2afcce4efda346b3187919d8f91346066750
Debian Security Advisory 4188-1
Posted May 3, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4188-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2017-17975, CVE-2017-18193, CVE-2017-18216, CVE-2017-18218, CVE-2017-18222, CVE-2017-18224, CVE-2017-18241, CVE-2017-18257, CVE-2017-5715, CVE-2017-5753, CVE-2018-1000199, CVE-2018-10323, CVE-2018-1065, CVE-2018-1066, CVE-2018-1068, CVE-2018-1092, CVE-2018-1093, CVE-2018-1108, CVE-2018-5803, CVE-2018-7480, CVE-2018-7566, CVE-2018-7740, CVE-2018-7757, CVE-2018-7995, CVE-2018-8087, CVE-2018-8781, CVE-2018-8822
SHA-256 | c04940bd4f6e00821a6373ebaafc1e5cd084607d9b3667203e468f8e5190068a
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