CVE-2023-53494: crypto: xts - Handle EBUSY correctly

CKI Backport Botrequested to merge
redhat/red-hat-ci-tools/kernel/bot-branches/centos-stream/src/kernel/centos-stream-9:backport-RHEL-119237-centos-stream-9-main into main

JIRA: https://issues.redhat.com/browse/RHEL-119237
CVE: CVE-2023-53494

commit 51c082514c2dedf2711c99d93c196cc4eedceb40
Author: Herbert Xu <herbert@gondor.apana.org.au>
Date:   Sun Jan 22 16:07:37 2023 +0800

    crypto: xts - Handle EBUSY correctly
    
    As it is xts only handles the special return value of EINPROGRESS,
    which means that in all other cases it will free data related to the
    request.
    
    However, as the caller of xts may specify MAY_BACKLOG, we also need
    to expect EBUSY and treat it in the same way.  Otherwise backlogged
    requests will trigger a use-after-free.
    
    Fixes: 8083b1bf8163 ("crypto: xts - add support for ciphertext stealing")
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
    Acked-by: Ard Biesheuvel <ardb@kernel.org>
    Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Signed-off-by: CKI Backport Bot cki-ci-bot+cki-gitlab-backport-bot@redhat.com

Created 2025-10-03 16:31 UTC by backporter - KWF FAQ - Slack #team-kernel-workflow - Source - Documentation - Report an issue

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