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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/wireless/wext-core.c
.. .. @@ -796,6 +796,12 @@
796 796  		}
797 797  	}
798 798  
799 +	/* Sanity-check to ensure we never end up _allocating_ zero
800 +	 * bytes of data for extra.
801 +	 */
802 +	if (extra_size <= 0)
803 +		return -EFAULT;
804 +
799 805  	/* kzalloc() ensures NULL-termination for essid_compat. */
800 806  	extra = kzalloc(extra_size, GFP_KERNEL);
801 807  	if (!extra)

..	..	@@ -796,6 +796,12 @@
796	796	}
797	797	}
798	798
	799	+ /* Sanity-check to ensure we never end up _allocating_ zero
	800	+ * bytes of data for extra.
	801	+ */
	802	+ if (extra_size <= 0)
	803	+ return -EFAULT;
	804	+
799	805	/* kzalloc() ensures NULL-termination for essid_compat. */
800	806	extra = kzalloc(extra_size, GFP_KERNEL);
801	807	if (!extra)