| commit | 9213ad631513d0e67d9d31465c9cdb3f3dde0399 | |
| author | Waldemar Brodkorb <wbx@uclibc-ng.org> | |
| Fri, 5 Aug 2016 19:33:44 +0000 (5 21:33 +0200) | ||
| committer | Waldemar Brodkorb <wbx@uclibc-ng.org> | |
| Fri, 5 Aug 2016 19:33:44 +0000 (5 21:33 +0200) | ||
| tree | 046479bb8e8b66192c8227f2054e3260e3dcd483 | treesnapshot (tar.gz zip) |
| parent | 79dc2c282b655adb8d5075d9eb2519883042ccf8 | commitdiff |
sunrpc: Do not use alloca in clntudp_call
CVE-2016-4429:
The call is technically in a loop, and under certain circumstances
(which are quite difficult to reproduce in a test case), alloca
can be invoked repeatedly during a single call to clntudp_call.
As a result, the available stack space can be exhausted (even
though individual alloca sizes are bounded implicitly by what
can fit into a UDP packet, as a side effect of the earlier
successful send operation).
From GNU libc:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=bc779a1a5b3035133024b21e2f339fe4219fb11c
CVE-2016-4429:
The call is technically in a loop, and under certain circumstances
(which are quite difficult to reproduce in a test case), alloca
can be invoked repeatedly during a single call to clntudp_call.
As a result, the available stack space can be exhausted (even
though individual alloca sizes are bounded implicitly by what
can fit into a UDP packet, as a side effect of the earlier
successful send operation).
From GNU libc:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=bc779a1a5b3035133024b21e2f339fe4219fb11c
| libc/inet/rpc/clnt_udp.c | diffblobblamehistory |