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Fix null pointer dereferences in PAM

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Coverity caught these.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #13889
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Richard Yao 2022-09-16 17:02:54 -04:00 committed by GitHub
parent 6c8e9f09c2
commit 4df8ccc83d
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1 changed files with 4 additions and 1 deletions
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5
contrib/pam_zfs_key/pam_zfs_key.c
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@ -531,7 +531,6 @@ zfs_key_config_get_dataset(zfs_key_config_t *config)
if (zhp == NULL) {
pam_syslog(NULL, LOG_ERR, "dataset %s not found",
config->homes_prefix);
zfs_close(zhp);
return (NULL);
}
@ -543,6 +542,10 @@ zfs_key_config_get_dataset(zfs_key_config_t *config)
return (dsname);
}
if (config->homes_prefix == NULL) {
return (NULL);
}
size_t len = ZFS_MAX_DATASET_NAME_LEN;
size_t total_len = strlen(config->homes_prefix) + 1
+ strlen(config->username);