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    SubjectRe: [PATCH] Reset current->pdeath_signal on SUID binary execution

    > the attached patch fixes a flaw in the "parent process death signal"
    > when executing SUID binaries. An unprivileged user may send arbitrary
    > signal to a child process even if it is running with higher privileges.
    > The idea to fix this issue is to reset pdeath_signal not only on fork,
    > but also on the execution of a SUID binary.
    > Michael, if we fix it this way, then the prctl() manual page should
    > reflect that behavior.

    the patch has been merged into 2.4 and 2.6, so the manual page needs an
    update at some point.

    > From comments it seems that we have to also reset pdeath_signal inside
    > LSM when it comes to capability-raised executes, but I must admit that I
    > got lost there.

    No further comments for this one? I am not familiar enough with it.



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      Last update: 2007-08-23 10:25    [W:0.041 / U:145.736 seconds]
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