CVE-2025-40176tls: wait for pending async decryptions if tls_strp_msg_hold fails
- 9.8CriticalCVSS base score
- 0.49%Exploitation in 30 daysEPSS · top 58% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 7 months later
· 7 months later
Published
- 11 months later
· 11 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.49% · top 58% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 – < 9f83fd0c179e0f458e824e417f9d5ad53443f685
- affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 – < c61d4368197d65c4809d9271f3b85325a600586a
- affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 – < 39dec4ea3daf77f684308576baf483b55ca7f160
- affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 – < 4fc109d0ab196bd943b7451276690fb6bb48c2e0
- affected 84c61fe1a75b4255df1e1e7c054c9e6d048da417 – < b8a6ff84abbcbbc445463de58704686011edc8e1
- affected 6.0
- unaffected < 6.0
- unaffected 6.1.158 – ≤ 6.1.*
- unaffected 6.6.114 – ≤ 6.6.*
- unaffected 6.12.55 – ≤ 6.12.*
- unaffected 6.17.5 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References5
- https://git.kernel.org/stable/c/9f83fd0c179e0f458e824e417f9d5ad53443f685 (opens in a new tab)
- https://git.kernel.org/stable/c/c61d4368197d65c4809d9271f3b85325a600586a (opens in a new tab)
- https://git.kernel.org/stable/c/39dec4ea3daf77f684308576baf483b55ca7f160 (opens in a new tab)
- https://git.kernel.org/stable/c/4fc109d0ab196bd943b7451276690fb6bb48c2e0 (opens in a new tab)
- https://git.kernel.org/stable/c/b8a6ff84abbcbbc445463de58704686011edc8e1 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-124907 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40176)Record last updated .