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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/ipv6/exthdrs_core.c
.. .. @@ -143,6 +143,8 @@
143 143  			optlen = 1;
144 144  			break;
145 145  		default:
146 +			if (len < 2)
147 +				goto bad;
146 148  			optlen = nh[offset + 1] + 2;
147 149  			if (optlen > len)
148 150  				goto bad;

..	..	@@ -143,6 +143,8 @@
143	143	optlen = 1;
144	144	break;
145	145	default:
	146	+ if (len < 2)
	147	+ goto bad;
146	148	optlen = nh[offset + 1] + 2;
147	149	if (optlen > len)
148	150	goto bad;