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util: Check for overflow in read_fd_link

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Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Cyrill Gorcunov
2013-05-07 19:01:22 +04:00
committed by Pavel Emelyanov
parent a94512dc13
commit 1ead3d79f7
1 changed files with 3 additions and 0 deletions
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3
util.c
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@@ -430,6 +430,9 @@ int read_fd_link(int lfd, char *buf, size_t size)
if (ret < 0) { if (ret < 0) {
pr_perror("Can't read link of fd %d", lfd); pr_perror("Can't read link of fd %d", lfd);
return -1; return -1;
} else if ((size_t)ret == size) {
pr_err("Buffer for read link of fd %d is too small\n", lfd);
return -1;
} }
buf[ret] = 0; buf[ret] = 0;