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apparmor: fix memory leak on buffer on error exit path 

Currently on the error exit path the allocated buffer is not free'd
causing a memory leak. Fix this by kfree'ing it.

Detected by CoverityScan, CID#1466876 ("Resource leaks")

Fixes: 1180b4c757 ("apparmor: fix dangling symlinks to policy rawdata after replacement")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
Colin Ian King 2018-03-27 14:35:58 +01:00 committed by John Johansen
parent 1180b4c757
commit 588558eb6d
1 changed files with 3 additions and 1 deletions
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4
security/apparmor/apparmorfs.c
View File

@ -1497,8 +1497,10 @@ static char *gen_symlink_name(int depth, const char *dirname, const char *fname)
}
error = snprintf(s, size, "raw_data/%s/%s", dirname, fname);
if (error >= size || error < 0)
if (error >= size || error < 0) {
kfree(buffer);
return ERR_PTR(-ENAMETOOLONG);
}
return buffer;
}