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CVE-2017-7477

Status Candidate

Overview

Heap-based buffer overflow in drivers/net/macsec.c in the MACsec module in the Linux kernel through 4.10.12 allows attackers to cause a denial of service or possibly have unspecified other impact by leveraging the use of a MAX_SKB_FRAGS+1 size in conjunction with the NETIF_F_FRAGLIST feature, leading to an error in the skb_to_sgvec function.

Related Files

Red Hat Security Advisory 2017-1615-01
Posted Jun 28, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1615-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: A flaw was found in the way Linux kernel allocates heap memory to build the scattergather list from a fragment list->frag_list) in the socket buffer. The heap overflow occurred if 'MAX_SKB_FRAGS + 1' parameter and 'NETIF_F_FRAGLIST' feature were used together. A remote user or process could use this flaw to potentially escalate their privilege on a system.

tags | advisory, remote, overflow, kernel
systems | linux, redhat
advisories | CVE-2017-2583, CVE-2017-6214, CVE-2017-7477, CVE-2017-7645, CVE-2017-7895
MD5 | 9cfe18ce0b936ec4aede687d0c578c6b
Red Hat Security Advisory 2017-1616-01
Posted Jun 28, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1616-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-1000364, CVE-2017-2583, CVE-2017-6214, CVE-2017-7477, CVE-2017-7645, CVE-2017-7895
MD5 | 7931eb75308b0094304dfb562742ac60
Ubuntu Security Notice USN-3293-1
Posted May 17, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3293-1 - Dmitry Vyukov discovered that KVM implementation in the Linux kernel improperly emulated the VMXON instruction. A local attacker in a guest OS could use this to cause a denial of service in the host OS. Dmitry Vyukov discovered that the generic SCSI subsystem in the Linux kernel contained a stack-based buffer overflow. A local attacker with access to an sg device could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-2596, CVE-2017-7187, CVE-2017-7261, CVE-2017-7294, CVE-2017-7477, CVE-2017-7616
MD5 | e6e42e1d3e3f0d5fd9a22f1347025056
Ubuntu Security Notice USN-3292-2
Posted May 17, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3292-2 - USN-3292-1 fixed a vulnerability in the Linux kernel for Ubuntu 16.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS. Jason Donenfeld discovered a heap overflow in the MACsec module in the Linux kernel. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2017-7477
MD5 | 43a73411295c6fdad7f00e1699e48dde
Ubuntu Security Notice USN-3292-1
Posted May 17, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3292-1 - Jason Donenfeld discovered a heap overflow in the MACsec module in the Linux kernel. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, overflow, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2017-7477
MD5 | 7f12ccca5fa653b67ab08b83bc5ba55b
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