USN-2797-1

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USN-2797-1

Summary: linux-lts-utopic vulnerabilities

Details: It was discovered that the Linux kernel did not check if a new IPv6 MTU set by a user space application was valid. A remote attacker could forge a route advertisement with an invalid MTU that a user space daemon like NetworkManager would honor and apply to the kernel, causing a denial of service. (CVE-2015-0272) It was discovered that in certain situations, a directory could be renamed outside of a bind mounted location. An attacker could use this to escape bind mount containment and gain access to sensitive information. (CVE-2015-2925) Moein Ghasemzadeh discovered that the USB WhiteHEAT serial driver contained hardcoded attributes about the USB devices. An attacker could construct a fake WhiteHEAT USB device that, when inserted, causes a denial of service (system crash). (CVE-2015-5257) It was discovered that the SCTP protocol implementation in the Linux kernel performed an incorrect sequence of protocol-initialization steps. A local attacker could use this to cause a denial of service (system crash). (CVE-2015-5283)

References: https://ubuntu.com/security/notices/USN-2797-1, https://ubuntu.com/security/CVE-2015-0272, https://ubuntu.com/security/CVE-2015-2925, https://ubuntu.com/security/CVE-2015-5257, https://ubuntu.com/security/CVE-2015-5283