Bug 2414524 (CVE-2025-40176) - CVE-2025-40176 kernel: tls: wait for pending async decryptions if tls_strp_msg_hold fails
Summary: CVE-2025-40176 kernel: tls: wait for pending async decryptions if tls_strp_ms...
Keywords:
Status: NEW
Alias: CVE-2025-40176
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: 2025-11-12 11:05 UTC by OSIDB Bzimport
Modified: 2026-01-14 00:28 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2025:23241 0 None None None 2025-12-17 11:25:53 UTC
Red Hat Product Errata RHSA-2026:0453 0 None None None 2026-01-12 09:10:51 UTC
Red Hat Product Errata RHSA-2026:0457 0 None None None 2026-01-12 13:29:03 UTC
Red Hat Product Errata RHSA-2026:0489 0 None None None 2026-01-13 09:28:12 UTC
Red Hat Product Errata RHSA-2026:0534 0 None None None 2026-01-14 00:09:29 UTC
Red Hat Product Errata RHSA-2026:0535 0 None None None 2026-01-14 00:28:49 UTC

Description OSIDB Bzimport 2025-11-12 11:05:26 UTC 
In the Linux kernel, the following vulnerability has been resolved:

tls: wait for pending async decryptions if tls_strp_msg_hold fails

Async decryption calls tls_strp_msg_hold to create a clone of the
input skb to hold references to the memory it uses. If we fail to
allocate that clone, proceeding with async decryption can lead to
various issues (UAF on the skb, writing into userspace memory after
the recv() call has returned).

In this case, wait for all pending decryption requests.
Comment 1 Alexander B 2025-11-13 12:25:54 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025111255-CVE-2025-40176-f2e3@gregkh/T
Comment 7 errata-xmlrpc 2025-12-17 11:25:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:23241 https://access.redhat.com/errata/RHSA-2025:23241
Comment 11 errata-xmlrpc 2026-01-12 09:10:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:0453 https://access.redhat.com/errata/RHSA-2026:0453
Comment 12 errata-xmlrpc 2026-01-12 13:29:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:0457 https://access.redhat.com/errata/RHSA-2026:0457
Comment 13 errata-xmlrpc 2026-01-13 09:28:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:0489 https://access.redhat.com/errata/RHSA-2026:0489
Comment 14 errata-xmlrpc 2026-01-14 00:09:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:0534 https://access.redhat.com/errata/RHSA-2026:0534
Comment 15 errata-xmlrpc 2026-01-14 00:28:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:0535 https://access.redhat.com/errata/RHSA-2026:0535
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