David Howells 06173edfc7 keys, dns: Fix size check of V1 server-list header ... commit acc657692a upstream. Fix the size check added to dns_resolver_preparse() for the V1 server-list header so that it doesn't give EINVAL if the size supplied is the same as the size of the header struct (which should be valid). This can be tested with: echo -n -e '\0\0\01\xff\0\0' | keyctl padd dns_resolver desc @p which will give "add_key: Invalid argument" without this fix. Fixes: 1997b3cb42 ("keys, dns: Fix missing size check of V1 server-list header") Reported-by: Pengfei Xu <pengfei.xu@intel.com> Link: https://lore.kernel.org/r/ZZ4fyY4r3rqgZL+4@xpf.sh.intel.com/ Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Petr Vorel <pvorel@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2024-01-25 15:35:41 -08:00
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dns_key.c	keys, dns: Fix size check of V1 server-list header	2024-01-25 15:35:41 -08:00
dns_query.c
internal.h
Kconfig
Makefile