bugacl - Bugs: bug #59061, acl_from_mode doesn't properly...


bug #59061: acl_from_mode doesn't properly handle allocation failure

Submitter:  Tavian Barnes <tavianator>
Submitted:  Thu 03 Sep 2020 08:50:23 PM UTC
Category:  None Severity:  3 - Normal
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  None
Open/Closed:  Closed
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Thu 03 Sep 2020 09:11:47 PM UTC, comment #2: 

Indeed, thanks for the fix.

The same bug exists in acl_copy_int, so I've fixed that at the same time.

Andreas Gruenbacher <agruen>
Group administrator
Thu 03 Sep 2020 08:58:31 PM UTC, comment #1: 

Patch attached.

(file #49740)

Tavian Barnes <tavianator>
Thu 03 Sep 2020 08:50:23 PM UTC, original submission:  

acl_from_mode() does

        acl_obj_p = __acl_init_obj(3);
        if (!acl_obj_p)
                goto fail;
        return NULL;

But __acl_free_acl_obj() doesn't handle NULL, resulting in a segfault.  Changing that `goto fail;` into `return NULL;` fixes the crash.

Tavian Barnes <tavianator>


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2020-09-03 agruen StatusNone Fixed
        Open/ClosedOpen Closed
    2020-09-03 tavianator Attached File- Added 0001-acl_from_mode-Fix-segfault-on-allocation-failure.patch, #49740

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