Red Hat Security Advisory 2015-2315-01 - NetworkManager is a system network service that manages network devices and connections. It was discovered that NetworkManager would set device MTUs based on MTU values received in IPv6 RAs, without sanity checking the MTU value first. A remote attacker could exploit this flaw to create a denial of service attack, by sending a specially crafted IPv6 RA packet to disturb IPv6 communication. A flaw was found in the way NetworkManager handled router advertisements. An unprivileged user on a local network could use IPv6 Neighbor Discovery ICMP to broadcast a non-route with a low hop limit, causing machines to lower the hop limit on existing IPv6 routes. If this limit is small enough, IPv6 packets would be dropped before reaching the final destination.
9bededbe927f0a591fc181a4af27a88f98de6fb87115ad57c30589c4ec04517dUbuntu Security Notice 2797-1 - 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. 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. Various other issues were also addressed.
dd05d11b3e84b3326131f4cb20c0dccdf1f459f2b7d53a4da9e0fab17349eefaUbuntu Security Notice 2796-1 - Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash). 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. Various other issues were also addressed.
ec2814a6a29dab65687108ce18fe6e877d64ef6509eb0fdd95d3435b0edf7fafUbuntu Security Notice 2792-1 - Dmitry Vyukov discovered that the Linux kernel did not properly initialize IPC object state in certain situations. A local attacker could use this to escalate their privileges, expose confidential information, or cause a denial of service (system crash). 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. Various other issues were also addressed.
9ff4283bbb732f6c23c7eb717c0f43455a871ded8bccdfef5307f089c2ff468aUbuntu Security Notice 2775-1 - 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. It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. Various other issues were also addressed.
eccf6cc9f1ecdd21da7422357b7edd8ff051eb42b235c47f08d7bd23dc2a4c85Ubuntu Security Notice 2778-1 - 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. It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. Various other issues were also addressed.
9c92de288e4eb7656ebb3bde7fa0705f4dc4d5ebeab54a345c58b7a9fe60d2d6Ubuntu Security Notice 2779-1 - 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. It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. Various other issues were also addressed.
e29aa0f4aa8712cadbb1070e7acddc412d06f2f0639bef9d0e87956850360b19Ubuntu Security Notice 2776-1 - 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. It was discovered that virtio networking in the Linux kernel did not handle fragments correctly, leading to kernel memory corruption. A remote attacker could use this to cause a denial of service (system crash) or possibly execute code with administrative privileges. Various other issues were also addressed.
02bf4856bc32a4f694e3993ab45512bd4ac12d4a96260b42ef52cd562846ff1fDebian Linux Security Advisory 3364-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation or denial of service.
8bf9da5be4e19bd80a46b0d6dca4e33f958d1700f95fd2553a38de299594cc34
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