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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
MD5 | 929e881c463d2f9d37abb573e97382b8
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
MD5 | 7d39c0c36b0586d1ce5ef011185bd5d2
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
MD5 | 2a24704c6672fb7196e61384ba5ed279
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