<div><div style="font-size:inherit" dir="auto">Hi,</div><div style="font-size:inherit" dir="auto"> Thank you for fixing and backporting the issue. I wanted to ask whether Bugzilla #1773 (timing-safe digest comparison in crypto/uadk) is planned to receive a CVE identifier or security advisory. Since this is a timing side-channel in cryptographic authentication verification, I was wondering whether it would be tracked as a CVE.</div><div style="font-size:inherit" dir="auto"> Thanks, </div><div style="font-size:inherit" dir="auto"> </div><div style="font-size:inherit" dir="auto">Siraj Luthfi Ananda</div> </div><div> <div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, 30 Jul 2026 at 16.19 Kevin Traynor <<a href="mailto:ktraynor@redhat.com">ktraynor@redhat.com</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Hi, FYI, your patch has been queued to stable release 25.11.3 Note it hasn't been pushed to <a href="http://dpdk.org/browse/dpdk-stable" rel="noreferrer" target="_blank">http://dpdk.org/browse/dpdk-stable</a> yet. It will be pushed if I get no objections before 08/04/26. So please shout if anyone has objections. Also note that after the patch there's a diff of the upstream commit vs the patch applied to the branch. This will indicate if there was any rebasing needed to apply to the stable branch. If there were code changes for rebasing (ie: not only metadata diffs), please double check that the rebase was correctly done. Queued patches are on a temporary branch at: <a href="https://github.com/kevintraynor/dpdk-stable" rel="noreferrer" target="_blank">https://github.com/kevintraynor/dpdk-stable</a> This queued commit can be viewed at: <a href="https://github.com/kevintraynor/dpdk-stable/commit/1248b5128c68aeac35878cdd41ae11396f3d4a4d" rel="noreferrer" target="_blank">https://github.com/kevintraynor/dpdk-stable/commit/1248b5128c68aeac35878cdd41ae11396f3d4a4d</a> Thanks. Kevin --- >From 1248b5128c68aeac35878cdd41ae11396f3d4a4d Mon Sep 17 00:00:00 2001 From: Stephen Hemminger <<a href="mailto:stephen@networkplumber.org" target="_blank">stephen@networkplumber.org</a>> Date: Mon, 29 Jun 2026 11:59:25 -0700 Subject: [PATCH] crypto/uadk: use timing-safe digest comparison MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ upstream commit 8051903e5727a85897fd83f19a591bb3b743c5d4 ] Digest verification used memcmp() to compare the computed and expected MAC. memcmp() returns as soon as the first differing byte is found, so its run time depends on how many leading bytes match. An attacker submitting forged digests can use that timing signal to recover the correct value one byte at a time. Use rte_memeq_timingsafe(), whose run time depends only on the length, for the verify comparison. Bugzilla ID: 1773 Fixes: aba5b230ca04 ("crypto/uadk: use async mode") Reported-by: Siraj Luthfi Ananda <<a href="mailto:sirajluthfi@gmail.com" target="_blank">sirajluthfi@gmail.com</a>> Signed-off-by: Stephen Hemminger <<a href="mailto:stephen@networkplumber.org" target="_blank">stephen@networkplumber.org</a>> Acked-by: Morten Brørup <<a href="mailto:mb@smartsharesystems.com" target="_blank">mb@smartsharesystems.com</a>> --- .mailmap | 1 + drivers/crypto/uadk/uadk_crypto_pmd.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/.mailmap b/.mailmap index bc54e58586..b84214567d 100644 --- a/.mailmap +++ b/.mailmap @@ -1546,4 +1546,5 @@ Simon Kuenzer <<a href="mailto:simon.kuenzer@neclab.eu" target="_blank">simon.kuenzer@neclab.eu</a>> Sinan Kaya <<a href="mailto:okaya@kernel.org" target="_blank">okaya@kernel.org</a>> Siobhan Butler <<a href="mailto:siobhan.a.butler@intel.com" target="_blank">siobhan.a.butler@intel.com</a>> +Siraj Luthfi Ananda <<a href="mailto:sirajluthfi@gmail.com" target="_blank">sirajluthfi@gmail.com</a>> Sirshak Das <<a href="mailto:sirshak.das@arm.com" target="_blank">sirshak.das@arm.com</a>> Sivaprasad Tummala <<a href="mailto:sivaprasad.tummala@amd.com" target="_blank">sivaprasad.tummala@amd.com</a>> <<a href="mailto:sivaprasad.tummala@intel.com" target="_blank">sivaprasad.tummala@intel.com</a>> diff --git a/drivers/crypto/uadk/uadk_crypto_pmd.c b/drivers/crypto/uadk/uadk_crypto_pmd.c index 3c4e83e56f..221ad546da 100644 --- a/drivers/crypto/uadk/uadk_crypto_pmd.c +++ b/drivers/crypto/uadk/uadk_crypto_pmd.c @@ -1112,6 +1112,6 @@ uadk_crypto_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops, uint8_t *dst = qp->temp_digest[i % BURST_MAX]; - if (memcmp(dst, op->sym->auth.digest.data, - sess->auth.digest_length) != 0) + if (!rte_memeq_timingsafe(dst, op->sym->auth.digest.data, + sess->auth.digest_length)) op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED; } -- 2.55.0 --- Diff of the applied patch vs upstream commit (please double-check if non-empty: --- --- - 2026-07-30 10:16:03.233113859 +0100 +++ 0061-crypto-uadk-use-timing-safe-digest-comparison.patch 2026-07-30 10:16:01.491971496 +0100 @@ -1 +1 @@ -From 8051903e5727a85897fd83f19a591bb3b743c5d4 Mon Sep 17 00:00:00 2001 +From 1248b5128c68aeac35878cdd41ae11396f3d4a4d Mon Sep 17 00:00:00 2001 @@ -8,0 +9,2 @@ +[ upstream commit 8051903e5727a85897fd83f19a591bb3b743c5d4 ] + @@ -20 +21,0 @@ -Cc: <a href="mailto:stable@dpdk.org" target="_blank">stable@dpdk.org</a> @@ -31 +32 @@ -index 0e57de0afe..e85a38c560 100644 +index bc54e58586..b84214567d 100644 @@ -34 +35 @@ -@@ -1565,4 +1565,5 @@ Simon Kuenzer <<a href="mailto:simon.kuenzer@neclab.eu" target="_blank">simon.kuenzer@neclab.eu</a>> +@@ -1546,4 +1546,5 @@ Simon Kuenzer <<a href="mailto:simon.kuenzer@neclab.eu" target="_blank">simon.kuenzer@neclab.eu</a>> </blockquote></div></div>