Bug 2541161 (CVE-2026-97591) - CVE-2026-97591 kernel: s390/crypto: Fix handling of EBUSY in PHMAC when req is pushed to crypto engine
Summary: CVE-2026-97591 kernel: s390/crypto: Fix handling of EBUSY in PHMAC when req i...
Keywords:
Status: NEW
Alias: CVE-2026-97591
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-25 10:53 UTC by OSIDB Bzimport
Modified: 2026-09-29 10:20 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-25 10:53:32 UTC 
In the Linux kernel, the following vulnerability has been resolved:

s390/crypto: Fix handling of EBUSY in PHMAC when req is pushed to crypto engine

When a request is transferred to the engine via
crypto_transfer_hash_request_to_engine() there are two return codes
signaling a successful transfer: EINPROGRESS and EBUSY. However the
correct handling of EBUSY was missing and has been added as a return
code indicating a successful transfer to the crypto engine.
Comment 1 gkamathe 2026-09-29 10:12:09 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97591.mbox
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