evm: Fix possible memory leak in evm_calc_hmac_or_hash()
commit5.4-rM2-2.2.x-imx-squashed0c4395fb2a
upstream. Don't immediately return if the signature is portable and security.ima is not present. Just set error so that memory allocated is freed before returning from evm_calc_hmac_or_hash(). Fixes:50b977481f
("EVM: Add support for portable signature format") Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> Cc: stable@vger.kernel.org Signed-off-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
ce7f038f85
commit
6de50456fe
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@ -243,7 +243,7 @@ static int evm_calc_hmac_or_hash(struct dentry *dentry,
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/* Portable EVM signatures must include an IMA hash */
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/* Portable EVM signatures must include an IMA hash */
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if (type == EVM_XATTR_PORTABLE_DIGSIG && !ima_present)
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if (type == EVM_XATTR_PORTABLE_DIGSIG && !ima_present)
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return -EPERM;
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error = -EPERM;
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out:
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out:
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kfree(xattr_value);
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kfree(xattr_value);
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kfree(desc);
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kfree(desc);
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