On Tue Jan 7, 2025 at 2:56 PM EET, David Gstir wrote:

quoted

On 13.11.2024, at 22:27, David Gstir [off-list ref] wrote:

With vmalloc stack addresses enabled (CONFIG_VMAP_STACK=y) DCP trusted
keys can crash during en- and decryption of the blob encryption key via
the DCP crypto driver. This is caused by improperly using sg_init_one()
with vmalloc'd stack buffers (plain_key_blob).

Fix this by always using kmalloc() for buffers we give to the DCP crypto
driver.

Cc: stable@vger.kernel.org # v6.10+
Fixes: 0e28bf61a5f9 ("KEYS: trusted: dcp: fix leak of blob encryption key")
Signed-off-by: David Gstir <david@sigma-star.at>

gentle ping.

It's done, thanks for reminding, and don't hesitate to do it earlier
if this ever happens again.

Thanks!
- David

BR, Jarkko