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| author | Lakshmi Ramasubramanian <nramas@linux.microsoft.com> | 2021-02-04 20:49:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-04 12:26:25 +0300 |
| commit | e436d3f7bdac29abfb14324bd4dd8eb0a670721d (patch) | |
| tree | ed115ca1b94b4fabf6ddedd09f0e6bd55fe3b1e1 /security/integrity | |
| parent | f04787555f4c9b1d5913e6c0f1413d6eecc47527 (diff) | |
| download | linux-e436d3f7bdac29abfb14324bd4dd8eb0a670721d.tar.xz | |
ima: Free IMA measurement buffer on error
[ Upstream commit 6d14c6517885fa68524238787420511b87d671df ]
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")
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'security/integrity')
| -rw-r--r-- | security/integrity/ima/ima_kexec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_kexec.c b/security/integrity/ima/ima_kexec.c index 9e94eca48b89..37b1244e3a16 100644 --- a/security/integrity/ima/ima_kexec.c +++ b/security/integrity/ima/ima_kexec.c @@ -120,6 +120,7 @@ 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; } |