vulnerability
Red Hat: CVE-2025-40176: kernel: tls: wait for pending async decryptions if tls_strp_msg_hold fails (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:C/I:P/A:C) | Nov 12, 2025 | Dec 18, 2025 | Jan 20, 2026 |
Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:P/A:C)
Published
Nov 12, 2025
Added
Dec 18, 2025
Modified
Jan 20, 2026
Description
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.
Solutions
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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