CVE-2026-23414 (GCVE-0-2026-23414)

Vulnerability from cvelistv5 – Published: 2026-04-02 11:40 – Updated: 2026-04-27 14:02
VLAI?
Title
tls: Purge async_hold in tls_decrypt_async_wait()
Summary
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]
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9f83fd0c179e0f458e824e417f9d5ad53443f685 , < ac435be7c7613eb13a5a8ceb5182e10b50c9ce87 (git)
Affected: c61d4368197d65c4809d9271f3b85325a600586a , < 2dcf324855c34e7f934ce978aa19b645a8f3ee71 (git)
Affected: 39dec4ea3daf77f684308576baf483b55ca7f160 , < 6dc11e0bd0a5466bcc76d275c09e5537bd0597dd (git)
Affected: b8a6ff84abbcbbc445463de58704686011edc8e1 , < 9f557c7eae127b44d2e863917dc986a4b6cb1269 (git)
Affected: b8a6ff84abbcbbc445463de58704686011edc8e1 , < fd8037e1f18ca5336934d0e0e7e1a4fe097e749d (git)
Affected: b8a6ff84abbcbbc445463de58704686011edc8e1 , < 84a8335d8300576f1b377ae24abca1d9f197807f (git)
Affected: 4fc109d0ab196bd943b7451276690fb6bb48c2e0 (git)
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    Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.131 , ≤ 6.6.* (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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