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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-23414

tls: Purge async_hold in tls_decrypt_async_wait()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: tls: Purge async_hold in tls_decrypt_async_wait() The async_hold queue pins encrypted input skbs while the AEAD engine references their scatterlist data. Once tls_decrypt_async_wait() returns, every AEAD operation has completed and the engine no longer references those skbs, so they can be freed unconditionally. A subsequent patch adds batch async decryption to tls_sw_read_sock(), introducing a new call site that must drain pending AEAD operations and release held skbs. Move __skb_queue_purge(&ctx->async_hold) into tls_decrypt_async_wait() so the purge is centralized and every caller -- recvmsg's drain path, the -EBUSY fallback in tls_do_decryption(), and the new read_sock batch path -- releases held skbs on synchronization without each site managing the purge independently. This fixes a leak when tls_strp_msg_hold() fails part-way through, after having added some cloned skbs to the async_hold queue. tls_decrypt_sg() will then call tls_decrypt_async_wait() to process all pending decrypts, and drop back to synchronous mode, but tls_sw_recvmsg() only flushes the async_hold queue when one record has been processed in "fully-async" mode, which may not be the case here. [pabeni@redhat.com: added leak comment]

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 9f83fd0c179e0f458e824e417f9d5ad53443f685 to < ac435be7c7613eb13a5a8ceb5182e10b50c9ce87affected
  • c61d4368197d65c4809d9271f3b85325a600586a to < 2dcf324855c34e7f934ce978aa19b645a8f3ee71affected
  • 39dec4ea3daf77f684308576baf483b55ca7f160 to < 6dc11e0bd0a5466bcc76d275c09e5537bd0597ddaffected
  • b8a6ff84abbcbbc445463de58704686011edc8e1 to < 9f557c7eae127b44d2e863917dc986a4b6cb1269affected
  • b8a6ff84abbcbbc445463de58704686011edc8e1 to < fd8037e1f18ca5336934d0e0e7e1a4fe097e749daffected
  • b8a6ff84abbcbbc445463de58704686011edc8e1 to < 84a8335d8300576f1b377ae24abca1d9f197807faffected
  • 4fc109d0ab196bd943b7451276690fb6bb48c2e0affected
  • 6.1.158 to < 6.1.168affected
  • 6.6.114 to < 6.6.131affected
  • 6.12.55 to < 6.12.80affected
  • 6.17.5 to < 6.18affected

Linux Linux

Default version status: affected

  • 6.18affected
  • 0 to < 6.18unaffected
  • 6.1.168 to ≤ 6.1.*unaffected
  • 6.6.131 to ≤ 6.6.*unaffected
  • 6.12.80 to ≤ 6.12.*unaffected
  • 6.18.21 to ≤ 6.18.*unaffected
  • 6.19.11 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References