CVE-2026-31533

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption The -EBUSY handling in tls_do_encryption(), introduced by commit 859054147318 ("net: tls: handle backlogging of crypto requests"), has a use-after-free due to double cleanup of encrypt_pending and the scatterlist entry. When crypto_aead_encrypt() returns -EBUSY, the request is enqueued to the cryptd backlog and the async callback tls_encrypt_done() will be invoked upon completion. That callback unconditionally restores the scatterlist entry (sge->offset,...

Affected product and versions

Product

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

Affected versions

>= 3ade391adc584f17b5570fd205de3ad029090368 < 414fc5e5a5aff776c150f1b86770e0a25a35df3a, >= cd1bbca03f3c1d845ce274c0d0a66de8e5929f72 < 02f3ecadb23558bbe068e6504118f1b712d4ece0, >= 13eca403876bbea3716e82cdfe6f1e6febb38754 < 0e43e0a3c94044acc74b8e0927c27972eb5a59e8, >= 8590541473188741055d27b955db0777569438e3 < aa9facde6c5005205874c37db3fd25799d741baf, >= 8590541473188741055d27b955db0777569438e3 < 5d70eb25b41e9b010828cd12818b06a0c3b04412, >= 8590541473188741055d27b955db0777569438e3 < 2694d408b0e595024e0fc1d64ff9db0358580f74, >= 8590541473188741055d27b955db0777569438e3 < a9b8b18364fffce4c451e6f6fd218fa4ab646705, >= ab6397f072e5097f267abf5cb08a8004e6b17694, >= 5.15.160 < 5.15.203, >= 6.1.84 < 6.1.169, >= 6.6.18 < 6.6.135, >= 6.7.6 < 6.8, >= 6.8, >= V3.1.6, >= V3.1.5, >= 6.8.1 < 6.12.82, >= 6.13 < 6.18.23, >= 6.19 < 6.19.13, 7.0

Fixed versions

5.15.203, 6.1.169, 6.6.135, 6.8, 6.12.82, 6.18.23, 6.19.13

Technical data

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416