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CVE-2025-40176

tls: wait for pending async decryptions if tls_strp_msg_hold fails

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.1.158, 6.6.114, 6.12.55, 6.17.5
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: total

Summary

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

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From 84c61fe1a75b4255df1e1e7c054c9e6d048da417 · fixed in 9f83fd0c179e0f458e824e417f9d5ad53443f685; From 84c61fe1a75b4255df1e1e7c054c9e6d048da417 · fixed in c61d4368197d65c4809d9271f3b85325a600586a; From 84c61fe1a75b4255df1e1e7c054c9e6d048da417 · fixed in 39dec4ea3daf77f684308576baf483b55ca7f160; From 84c61fe1a75b4255df1e1e7c054c9e6d048da417 · fixed in 4fc109d0ab196bd943b7451276690fb6bb48c2e0; From 84c61fe1a75b4255df1e1e7c054c9e6d048da417 · fixed in b8a6ff84abbcbbc445463de58704686011edc8e1

  • Linux Linux

    6.0

  • KernelLinux

    From 6.0.0 · fixed in 6.1.158; From 6.2.0 · fixed in 6.6.114; From 6.7.0 · fixed in 6.12.55; From 6.13.0 · fixed in 6.17.5

References 5

git.kernel.org