Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 9f83fd0c179e0f458e824e417f9d5ad53443f685 before ac435be7c7613eb13a5a8ceb5182e10b50c9ce87; affected c61d4368197d65c4809d9271f3b85325a600586a before 2dcf324855c34e7f934ce978aa19b645a8f3ee71; affected 39dec4ea3daf77f684308576baf483b55ca7f160 before 6dc11e0bd0a5466bcc76d275c09e5537bd0597dd; affected b8a6ff84abbcbbc445463de58704686011edc8e1 before 9f557c7eae127b44d2e863917dc986a4b6cb1269; affected b8a6ff84abbcbbc445463de58704686011edc8e1 before fd8037e1f18ca5336934d0e0e7e1a4fe097e749d; affected b8a6ff84abbcbbc445463de58704686011edc8e1 before 84a8335d8300576f1b377ae24abca1d9f197807f; affected 4fc109d0ab196bd943b7451276690fb6bb48c2e0; affected 6.1.158 before 6.1.168; affected 6.6.114 before 6.6.131; affected 6.12.55 before 6.12.80; affected 6.17.5 before 6.18 |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.1.168 through 6.1.*; unaffected 6.6.131 through 6.6.*; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ac435be7c7613eb13a5a8ceb5182e10b50c9ce87
- https://git.kernel.org/stable/c/2dcf324855c34e7f934ce978aa19b645a8f3ee71
- https://git.kernel.org/stable/c/6dc11e0bd0a5466bcc76d275c09e5537bd0597dd
- https://git.kernel.org/stable/c/9f557c7eae127b44d2e863917dc986a4b6cb1269
- https://git.kernel.org/stable/c/fd8037e1f18ca5336934d0e0e7e1a4fe097e749d
- https://git.kernel.org/stable/c/84a8335d8300576f1b377ae24abca1d9f197807f
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.