Bug 471896 – Kernel : oops from tcp_collapse() when using splice(2) (CVE-2013-2128)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2013-05-31 10:14:41 UTC]

From ${URL} :

Linux kernel which supports splice(2) call to move data across 
file/socket
descriptors via a pipe buffers, is vulnerable to a kernel crash that 
occurs
while calling splice(2) over a tcp socket which in turn calls 
tcp_read_sock().

A user/program could use this flaw to cause system crash, resulting in 
DoS.

Upstream fix:
-------------
  -> 
https://git.kernel.org/linus/baff42ab1494528907bf4d5870359e31711746ae

[Comment 1 GLSAMaker/CVETool Bot 2013-08-30 01:18:21 UTC]

CVE-2013-2128 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2128):
  The tcp_read_sock function in net/ipv4/tcp.c in the Linux kernel before
  2.6.34 does not properly manage skb consumption, which allows local users to
  cause a denial of service (system crash) via a crafted splice system call
  for a TCP socket.

[Comment 2 John Helmert III 2021-10-25 00:54:30 UTC]

In 2.6.34 onwards