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.

An update for kernel is now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) 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. (CVE-2017-6074, Important)

* It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation 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. (CVE-2017-2634, Moderate)

Important: This update disables the DCCP kernel module at load time by using the kernel module blacklist method. The module is disabled in an attempt to reduce further exposure to additional issues. Please see Red Hat Bugzilla (BZ#1425177) for additional information.

Red Hat would like to thank Andrey Konovalov (Google) for reporting CVE-2017-6074. The CVE-2017-2634 issue was discovered by Wade Mealing (Red Hat Product Security).

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for kernel is now available for Red Hat Enterprise Linux 5.6 Long Life.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) 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. (CVE-2017-6074, Important)

* It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation 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. (CVE-2017-2634, Moderate)

Important: This update disables the DCCP kernel module at load time by using the kernel module blacklist method. The module is disabled in an attempt to reduce further exposure to additional issues. (BZ#1426311)

Red Hat would like to thank Andrey Konovalov (Google) for reporting CVE-2017-6074. The CVE-2017-2634 issue was discovered by Wade Mealing (Red Hat Product Security).

An update for kernel is now available for Red Hat Enterprise Linux 5.9 Long Life.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) 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. (CVE-2017-6074, Important)

* It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation 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. (CVE-2017-2634, Moderate)

Important: This update disables the DCCP kernel module at load time by using the kernel module blacklist method. The module is disabled in an attempt to reduce further exposure to additional issues. (BZ#1426309)

Red Hat would like to thank Andrey Konovalov (Google) for reporting CVE-2017-6074. The CVE-2017-2634 issue was discovered by Wade Mealing (Red Hat Product Security).

Security Fix(es) :

  - A use-after-free flaw was found in the way the Linux     kernel's Datagram Congestion Control Protocol (DCCP)     implementation freed SKB (socket buffer) 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.
    (CVE-2017-6074, Important)

  - It was found that the Linux kernel's Datagram Congestion     Control Protocol (DCCP) implementation 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. (CVE-2017-2634, Moderate)

Important: This update disables the DCCP kernel module at load time by using the kernel module blacklist method. The module is disabled in an attempt to reduce further exposure to additional issues.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:0323 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol     (DCCP) implementation freed SKB (socket buffer) 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. (CVE-2017-6074, Important)

    * It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation 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. (CVE-2017-2634, Moderate)

    Important: This update disables the DCCP kernel module at load time by using the kernel module blacklist     method. The module is disabled in an attempt to reduce further exposure to additional issues. Please see     Red Hat Bugzilla (BZ#1425177) for additional information.

    Red Hat would like to thank Andrey Konovalov (Google) for reporting CVE-2017-6074. The CVE-2017-2634 issue     was discovered by Wade Mealing (Red Hat Product Security).

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2017-0323 advisory.

    - [net] dccp: fix freeing skb too early for IPV6_RECVPKTINFO (Hannes Frederic Sowa) [1424633]     {CVE-2017-6074}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update for kernel is now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es) :

* A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) 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. (CVE-2017-6074, Important)

* It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation 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. (CVE-2017-2634, Moderate)

Important: This update disables the DCCP kernel module at load time by using the kernel module blacklist method. The module is disabled in an attempt to reduce further exposure to additional issues. Please see Red Hat Bugzilla (BZ#1425177) for additional information.

Red Hat would like to thank Andrey Konovalov (Google) for reporting CVE-2017-6074. The CVE-2017-2634 issue was discovered by Wade Mealing (Red Hat Product Security).

ID	Name	Product	Family	Severity
101429	Virtuozzo 7 : kernel / kernel-PAE / kernel-PAE-devel / etc (VZLSA-2017-0323)	Nessus	Virtuozzo Local Security Checks	high
97465	RHEL 5 : kernel (RHSA-2017:0347)	Nessus	Red Hat Local Security Checks	high
97464	RHEL 5 : kernel (RHSA-2017:0346)	Nessus	Red Hat Local Security Checks	high
97415	Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20170224)	Nessus	Scientific Linux Local Security Checks	high
97413	RHEL 5 : kernel (RHSA-2017:0323)	Nessus	Red Hat Local Security Checks	high
97405	Oracle Linux 5 : kernel (ELSA-2017-0323)	Nessus	Oracle Linux Local Security Checks	high
97391	CentOS 5 : kernel (CESA-2017:0323)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2017-2634

high

Tenable Plugins

high

high

high

high

high

high

high