Unceremoneously discard HDLC frames with less than two bytes in them.
XXX: real fix: this could should check the number of bytes in the packet before accessing them. Found by: phkmalloc
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=25019
@ -17,7 +17,7 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id$
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* $Id: hdlc.c,v 1.11 1997/02/22 16:10:16 peter Exp $
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*
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* TODO:
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*/
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@ -334,6 +334,12 @@ HdlcInput(struct mbuf *bp)
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}
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if (!DEV_IS_SYNC)
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bp->cnt -= 2; /* discard FCS part */
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if (bp->cnt < 2) { /* XXX: raise this bar ? */
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bfree(bp);
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return;
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}
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cp = MBUF_CTOP(bp);
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ifInPackets++;
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