From e873c74132f0c5f1452816cd9bb26208f0bba1e1 Mon Sep 17 00:00:00 2001 From: Shivank Garg Date: Sat, 22 Aug 2026 19:22:05 +0000 Subject: dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels. dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it: slab-use-after-free in dma_chan_put+0x3e6/0x4c0 Read of size 8 by task insmod/6319 Freed by task 6319: kfree+0x225/0x470 dma_chan_put+0x395/0x4c0 dmaengine_put+0xf8/0x160 Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device. Fixes: 8ad342a86359 ("dmaengine: Add reference counting to dma_device struct") Suggested-by: Sashiko Link: https://sashiko.dev/#/patchset/20260518-dmaengine-kref-fix-v1-1-4d6125048fb7@amd.com Reviewed-by: Frank Li Reviewed-by: Logan Gunthorpe Signed-off-by: Shivank Garg Link: https://patch.msgid.link/20260822-dmaengine-kref-fix-v5-3-d4a4ee47d927@amd.com Signed-off-by: Vinod Koul --- include/net/tls_prot.h | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 include/net/tls_prot.h (limited to 'include/net/tls_prot.h') diff --git a/include/net/tls_prot.h b/include/net/tls_prot.h new file mode 100644 index 000000000..68a407564 --- /dev/null +++ b/include/net/tls_prot.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright (c) 2023, Oracle and/or its affiliates. + * + * TLS Protocol definitions + * + * From https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml + */ + +#ifndef _TLS_PROT_H +#define _TLS_PROT_H + +/* + * TLS Record protocol: ContentType + */ +enum { + TLS_RECORD_TYPE_CHANGE_CIPHER_SPEC = 20, + TLS_RECORD_TYPE_ALERT = 21, + TLS_RECORD_TYPE_HANDSHAKE = 22, + TLS_RECORD_TYPE_DATA = 23, + TLS_RECORD_TYPE_HEARTBEAT = 24, + TLS_RECORD_TYPE_TLS12_CID = 25, + TLS_RECORD_TYPE_ACK = 26, +}; + +/* + * TLS Alert protocol: AlertLevel + */ +enum { + TLS_ALERT_LEVEL_WARNING = 1, + TLS_ALERT_LEVEL_FATAL = 2, +}; + +/* + * TLS Alert protocol: AlertDescription + */ +enum { + TLS_ALERT_DESC_CLOSE_NOTIFY = 0, + TLS_ALERT_DESC_UNEXPECTED_MESSAGE = 10, + TLS_ALERT_DESC_BAD_RECORD_MAC = 20, + TLS_ALERT_DESC_RECORD_OVERFLOW = 22, + TLS_ALERT_DESC_HANDSHAKE_FAILURE = 40, + TLS_ALERT_DESC_BAD_CERTIFICATE = 42, + TLS_ALERT_DESC_UNSUPPORTED_CERTIFICATE = 43, + TLS_ALERT_DESC_CERTIFICATE_REVOKED = 44, + TLS_ALERT_DESC_CERTIFICATE_EXPIRED = 45, + TLS_ALERT_DESC_CERTIFICATE_UNKNOWN = 46, + TLS_ALERT_DESC_ILLEGAL_PARAMETER = 47, + TLS_ALERT_DESC_UNKNOWN_CA = 48, + TLS_ALERT_DESC_ACCESS_DENIED = 49, + TLS_ALERT_DESC_DECODE_ERROR = 50, + TLS_ALERT_DESC_DECRYPT_ERROR = 51, + TLS_ALERT_DESC_TOO_MANY_CIDS_REQUESTED = 52, + TLS_ALERT_DESC_PROTOCOL_VERSION = 70, + TLS_ALERT_DESC_INSUFFICIENT_SECURITY = 71, + TLS_ALERT_DESC_INTERNAL_ERROR = 80, + TLS_ALERT_DESC_INAPPROPRIATE_FALLBACK = 86, + TLS_ALERT_DESC_USER_CANCELED = 90, + TLS_ALERT_DESC_MISSING_EXTENSION = 109, + TLS_ALERT_DESC_UNSUPPORTED_EXTENSION = 110, + TLS_ALERT_DESC_UNRECOGNIZED_NAME = 112, + TLS_ALERT_DESC_BAD_CERTIFICATE_STATUS_RESPONSE = 113, + TLS_ALERT_DESC_UNKNOWN_PSK_IDENTITY = 115, + TLS_ALERT_DESC_CERTIFICATE_REQUIRED = 116, + TLS_ALERT_DESC_NO_APPLICATION_PROTOCOL = 120, +}; + +#endif /* _TLS_PROT_H */ -- cgit v1.3.1