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CVE-2017-2634

Status Candidate

Overview

It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation before 2.6.22.17 used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.

Related Files

Red Hat Security Advisory 2017-0347-01
Posted Feb 28, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0347-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol implementation freed SKB resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system.

tags | advisory, kernel, local, protocol
systems | linux, redhat
advisories | CVE-2017-2634, CVE-2017-6074
SHA-256 | 1b4b8e78cedd629a22e05bbddd3f94b5521690ed6d0fcfb8cf2bee78014e4ed5
Red Hat Security Advisory 2017-0346-01
Posted Feb 28, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0346-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol implementation freed SKB resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system.

tags | advisory, kernel, local, protocol
systems | linux, redhat
advisories | CVE-2017-2634, CVE-2017-6074
SHA-256 | f5aa4478eea393b3e04526c6234ee9c81c4928eb5136499b95092bff79ea51bb
Red Hat Security Advisory 2017-0323-01
Posted Feb 25, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-0323-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol implementation freed SKB resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system.

tags | advisory, kernel, local, protocol
systems | linux, redhat
advisories | CVE-2017-2634, CVE-2017-6074
SHA-256 | 056578c1ba769d6ac2dcce94e9e76988a68b5db1def1c44c336d2cf676e7cda7
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