Bug 2464465 (CVE-2026-31746) - CVE-2026-31746 kernel: s390/zcrypt: Fix memory leak with CCA cards used as accelerator
Summary: CVE-2026-31746 kernel: s390/zcrypt: Fix memory leak with CCA cards used as ac...
Keywords:
Status: NEW
Alias: CVE-2026-31746
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-01 15:08 UTC by OSIDB Bzimport
Modified: 2026-05-01 21:56 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-01 15:08:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

s390/zcrypt: Fix memory leak with CCA cards used as accelerator

Tests showed that there is a memory leak if CCA cards are used as
accelerator for clear key RSA requests (ME and CRT). With the last
rework for the memory allocation the AP messages are allocated by
ap_init_apmsg() but for some reason on two places (ME and CRT) the
older allocation was still in place. So the first allocation simple
was never freed.
Comment 1 Keith Grant 2026-05-01 21:54:17 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050141-CVE-2026-31746-82d7@gregkh/T
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