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    Subject[PATCH v2 1/2] ima: Free IMA measurement buffer on error
    Date
    IMA allocates kernel virtual memory to carry forward the measurement
    list, from the current kernel to the next kernel on kexec system call,
    in ima_add_kexec_buffer() function. In error code paths this memory
    is not freed resulting in memory leak.

    Free the memory allocated for the IMA measurement list in
    the error code paths in ima_add_kexec_buffer() function.

    Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
    Suggested-by: Tyler Hicks <tyhicks@linux.microsoft.com>
    Fixes: 7b8589cc29e7 ("ima: on soft reboot, save the measurement list")
    ---
    security/integrity/ima/ima_kexec.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/security/integrity/ima/ima_kexec.c b/security/integrity/ima/ima_kexec.c
    index 121de3e04af2..206ddcaa5c67 100644
    --- a/security/integrity/ima/ima_kexec.c
    +++ b/security/integrity/ima/ima_kexec.c
    @@ -119,6 +119,7 @@ void ima_add_kexec_buffer(struct kimage *image)
    ret = kexec_add_buffer(&kbuf);
    if (ret) {
    pr_err("Error passing over kexec measurement buffer.\n");
    + vfree(kexec_buffer);
    return;
    }

    --
    2.30.0
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