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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-6.0-pull-request' into staging

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linux-user Pull request 20210330

Fix NETLINK_LIST_MEMBERSHIPS with NULL/invalid pointer and 0 length

# gpg: Signature made Tue 30 Mar 2021 15:38:35 BST
# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-6.0-pull-request:
  linux-user: NETLINK_LIST_MEMBERSHIPS: Allow bad ptr if its length is 0

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell
2021-03-31 10:44:43 +01:00
parent 6d40ce00c1 13e340c886
commit b307a3174f
1 changed files with 1 additions and 1 deletions
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linux-user/syscall.c
+1 -1
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@@ -3025,7 +3025,7 @@ get_timeout:
return -TARGET_EINVAL;
}
results = lock_user(VERIFY_WRITE, optval_addr, len, 1);
if (!results) {
if (!results && len > 0) {
return -TARGET_EFAULT;
}
lv = len;