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| author | Lakshmi Ramasubramanian <nramas@linux.microsoft.com> | 2021-02-04 09:49:50 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-03 18:22:43 +0100 |
| commit | 5db2c9e89a2dfe279bc5527a8f4571197b15f10f (patch) | |
| tree | 21111c813da69ef7da59d0897279f31d6e92713a /security | |
| parent | e99fbca3382bc5f1665be04b46e6afeacbd37228 (diff) | |
| download | linux-stable-5db2c9e89a2dfe279bc5527a8f4571197b15f10f.tar.gz linux-stable-5db2c9e89a2dfe279bc5527a8f4571197b15f10f.tar.bz2 linux-stable-5db2c9e89a2dfe279bc5527a8f4571197b15f10f.zip | |
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')
| -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 e473eee913cb..40bc385a8076 100644 --- a/security/integrity/ima/ima_kexec.c +++ b/security/integrity/ima/ima_kexec.c @@ -122,6 +122,7 @@ 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; } |