Critical 9.8Published Nov 12, 2025

CVE-2025-40176tls: wait for pending async decryptions if tls_strp_msg_hold fails

Updated under an hour ago (2026-10-19 07:50 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	84c61fe1a75b4255df1e1e7c054c9e6d048da417 builds before 9f83fd0c179e0f458e824e417f9d5ad53443f685; from 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before c61d4368197d65c4809d9271f3b85325a600586a; 84c61fe1a75b4255df1e1e7c054c9e6d048da417 builds before 39dec4ea3daf77f684308576baf483b55ca7f160; 84c61fe1a75b4255df1e1e7c054c9e6d048da417 builds before 4fc109d0ab196bd943b7451276690fb6bb48c2e0; from 84c61fe1a75b4255df1e1e7c054c9e6d048da417 before b8a6ff84abbcbbc445463de58704686011edc8e1	CNA record

References

https://git.kernel.org/stable/c/9f83fd0c179e0f458e824e417f9d5ad53443f685
https://git.kernel.org/stable/c/c61d4368197d65c4809d9271f3b85325a600586a
https://git.kernel.org/stable/c/39dec4ea3daf77f684308576baf483b55ca7f160
https://git.kernel.org/stable/c/4fc109d0ab196bd943b7451276690fb6bb48c2e0
https://git.kernel.org/stable/c/b8a6ff84abbcbbc445463de58704686011edc8e1

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.