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Message-ID: <4FF46FF1.20504@redhat.com> Date: Wed, 04 Jul 2012 10:31:45 -0600 From: Kurt Seifried <kseifried@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: CVE Request -- kernel: epoll: can leak file descriptors when returning -ELOOP -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 07/04/2012 01:19 AM, Petr Matousek wrote: > An epoll_ctl(,EPOLL_CTL_ADD,,) operation can return '-ELOOP' to > prevent circular epoll dependencies from being created. However, > in that case we do not properly clear the 'tfile_check_list'. > > An unprivileged local user could use this flaw to crash the > system. > > Regression introduced via 28d82dc1c4edbc352129f97f4ca22624d1fe61de > commit. > > Upstream fix: 13d518074a952d33d47c428419693f63389547e9 > > References: https://lkml.org/lkml/2012/3/27/65 > https://lkml.org/lkml/2012/4/17/247 > https://bugzilla.redhat.com/show_bug.cgi?id=837502 > > Thanks, Please use CVE-2012-3375 for this issue. - -- Kurt Seifried Red Hat Security Response Team (SRT) PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJP9G/uAAoJEBYNRVNeJnmTQ0gQAKEDLP9MS+7TfgdvZwW0WvUp /yn9FiWGZ7I9J0cXfPA/UNF4DOb4kZ4SbZBRwPwPKm8+KlP2CczDfSIXqHniyTWP DYA1bahNPjesFIDuLWm7aZE+Joj3S2ptQzrrlGLmMEM/SzftI9cAs63bBVj0FgP1 cyckX/qkvhla5OlD3lrHmqFUpXE5z375mR26g7pvQPSwUibdVSPz1AQCydiUjU00 BnTWbhXfWBAzLh38phj1Fi9McoefzBG4Ih0ACf/WqkP3SnJzNpNccMpMK57qqICK B1hXmkIIjK+taa7/URJJmXz62wEYkC1COaXgbXx6fwc0xsCIjAQoOx4ZBCqlK69D WYV9qQz3whByMtAF210MiHvUaH6V3it2UU02v+YKO+LYi40TRBH6DiIpNKg/ghrV Pnwn8Q4Hp7YjKEoQqo33WjyH3U/PXjLIkIOpf/DAQeTJ1ERuhNH0TsQzVMLbYCCd N9mmUNJQbfPWxH5g5JfxzZXmGYfYcrvUNQechfwrZ9ZOwrUDyP+ip0tKvWWqu54/ 7UiZ/QJoUGACqqFyX6FcUw2nQladfYtDmyKHJZE9uvwz8DeZhB8OnMomTDjoUWsU Ep3+Fla8lUvEzUa7XZ4sirDlP58l2PDb6x2ylYDIRY3zGuRMpwz1LKz0TZoldhFu MyPWFd6InJk96QZ64PVn =jYse -----END PGP SIGNATURE-----
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