NFSD: Protect against send buffer overflow in NFSv2 READDIR
[ Upstream commit 00b4492686e0497fdb924a9d4c8f6f99377e176c ]
Restore the previous limit on the @count argument to prevent a
buffer overflow attack.
BUG=b/258184692
TEST=presubmit
RELEASE_NOTE=Fixed CVE-2022-43945 in the Linux kernel.
cos-patch: security-high
Fixes: 53b1119a6e50 ("NFSD: Fix READDIR buffer overflow")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Change-Id: I46511ffc9121f1b05d18c806002cad26804a421b
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/38492
Reviewed-by: Meena Shanmugam <meenashanmugam@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
1 file changed
