UBUNTU-CVE-2017-15649

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UBUNTU-CVE-2017-15649

Summary:

Details: net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.

References: https://ubuntu.com/security/CVE-2017-15649, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=008ba2a13f2d04c947adc536d19debb8fe66f110, http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4971613c1639d8e5f102c4e797c3bf8f83a5a69e, http://patchwork.ozlabs.org/patch/813945/, http://patchwork.ozlabs.org/patch/818726/, http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.6, https://blogs.securiteam.com/index.php/archives/3484, https://github.com/torvalds/linux/commit/008ba2a13f2d04c947adc536d19debb8fe66f110, https://github.com/torvalds/linux/commit/4971613c1639d8e5f102c4e797c3bf8f83a5a69e, https://ubuntu.com/security/notices/USN-3485-1, https://ubuntu.com/security/notices/USN-3485-2, https://ubuntu.com/security/notices/USN-3487-1, https://ubuntu.com/security/notices/USN-3485-3, https://ubuntu.com/security/notices/USN-3754-1, https://www.cve.org/CVERecord?id=CVE-2017-15649