Note:
This project will be discontinued after December 13, 2021. [more]
2017-03-01
The ip_cmsg_recv_checksum function in net/ipv4/ip_sockglue.c in the Linux kernel before 4.10.1 has incorrect expectations about skb data layout, which allows local users to cause a denial of service (buffer over-read) or possibly have unspecified other impact via crafted system calls, as demonstrated by use of the MSG_MORE flag in conjunction with loopback UDP transmission.
| Products | Linux_kernel |
| Type | Out-of-bounds Read (CWE-125) |
| First patch |
https://github.com/torvalds/linux/commit/ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32 |
| Patches | http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4ef4574f1ee5252e2cd365f8f5d5bafd048f32 |
| Relevant file/s | ./net/ipv4/ip_sockglue.c (modified, +4, -4) |
| Links |
• http://www.securityfocus.com/bid/96487
• https://bugzilla.redhat.com/show_bug.cgi?id=1427984 • http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.1 • http://www.openwall.com/lists/oss-security/2017/02/28/5 |
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