CVE-2022-49522

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49522
In the Linux kernel, the following vulnerability has been resolved: mmc: jz4740: Apply DMA engine limits to maximum segment size Do what is done in other DMA-enabled MMC host drivers (cf. host/mmci.c) and limit the maximum segment size based on the DMA engine's capabilities. This is needed to avoid warnings like the following with CONFIG_DMA_API_DEBUG=y. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 21 at kernel/dma/debug.c:1162 debug_dma_map_sg+0x2f4/0x39c DMA-API: jz4780-dma 13420000.dma-controller: mapping sg segment longer than device claims to support [len=98304] [max=65536] CPU: 0 PID: 21 Comm: kworker/0:1H Not tainted 5.18.0-rc1 #19 Workqueue: kblockd blk_mq_run_work_fn Stack : 81575aec 00000004 80620000 80620000 80620000 805e7358 00000009 801537ac 814c832c 806276e3 806e34b4 80620000 81575aec 00000001 81575ab8 09291444 00000000 00000000 805e7358 81575958 ffffffea 8157596c 00000000 636f6c62 6220646b 80387a70 0000000f 6d5f6b6c 80620000 00000000 81575ba4 00000009 805e170c 80896640 00000001 00010000 00000000 00000000 00006098 806e0000 ... Call Trace: [<80107670>] show_stack+0x84/0x120 [<80528cd8>] __warn+0xb8/0xec [<80528d78>] warn_slowpath_fmt+0x6c/0xb8 [<8016f1d4>] debug_dma_map_sg+0x2f4/0x39c [<80169d4c>] __dma_map_sg_attrs+0xf0/0x118 [<8016a27c>] dma_map_sg_attrs+0x14/0x28 [<804f66b4>] jz4740_mmc_prepare_dma_data+0x74/0xa4 [<804f6714>] jz4740_mmc_pre_request+0x30/0x54 [<804f4ff4>] mmc_blk_mq_issue_rq+0x6e0/0x7bc [<804f5590>] mmc_mq_queue_rq+0x220/0x2d4 [<8038b2c0>] blk_mq_dispatch_rq_list+0x480/0x664 [<80391040>] blk_mq_do_dispatch_sched+0x2dc/0x370 [<80391468>] __blk_mq_sched_dispatch_requests+0xec/0x164 [<80391540>] blk_mq_sched_dispatch_requests+0x44/0x94 [<80387900>] __blk_mq_run_hw_queue+0xb0/0xcc [<80134c14>] process_one_work+0x1b8/0x264 [<80134ff8>] worker_thread+0x2ec/0x3b8 [<8013b13c>] kthread+0x104/0x10c [<80101dcc>] ret_from_kernel_thread+0x14/0x1c ---[ end trace 0000000000000000 ]---

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/353298cadbd4c7d8e8a16d6000066414694933c3 Patch
https://git.kernel.org/stable/c/7923f95997a79cef2ad161a2facae64c25a0bca0 Patch
https://git.kernel.org/stable/c/807f90f1960a59dc557542b818c484a8db9ac978 Patch
https://git.kernel.org/stable/c/90281cadf5077f2d2bec8b08c2ead1f8cd12660e Patch
https://git.kernel.org/stable/c/a828920b9ec0d89d3011198d482b7fe224d2de19 Patch
https://git.kernel.org/stable/c/afadb04f1d6e74b18a253403f5274cde5e3fd7bd Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

21 Oct 2025, 12:06

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mmc: jz4740: Aplicar límites del motor DMA al tamaño máximo de segmento. Haga lo que se hace en otros controladores de host MMC habilitados para DMA (cf. host/mmci.c) y limite el tamaño máximo de segmento en función de las capacidades del motor DMA. Esto es necesario para evitar advertencias como la siguiente con CONFIG_DMA_API_DEBUG=y. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 21 at kernel/dma/debug.c:1162 debug_dma_map_sg+0x2f4/0x39c DMA-API: jz4780-dma 13420000.dma-controller: mapping sg segment longer than device claims to support [len=98304] [max=65536] CPU: 0 PID: 21 Comm: kworker/0:1H Not tainted 5.18.0-rc1 #19 Workqueue: kblockd blk_mq_run_work_fn Stack : 81575aec 00000004 80620000 80620000 80620000 805e7358 00000009 801537ac 814c832c 806276e3 806e34b4 80620000 81575aec 00000001 81575ab8 09291444 00000000 00000000 805e7358 81575958 ffffffea 8157596c 00000000 636f6c62 6220646b 80387a70 0000000f 6d5f6b6c 80620000 00000000 81575ba4 00000009 805e170c 80896640 00000001 00010000 00000000 00000000 00006098 806e0000 ... Call Trace: [&lt;80107670&gt;] show_stack+0x84/0x120 [&lt;80528cd8&gt;] __warn+0xb8/0xec [&lt;80528d78&gt;] warn_slowpath_fmt+0x6c/0xb8 [&lt;8016f1d4&gt;] debug_dma_map_sg+0x2f4/0x39c [&lt;80169d4c&gt;] __dma_map_sg_attrs+0xf0/0x118 [&lt;8016a27c&gt;] dma_map_sg_attrs+0x14/0x28 [&lt;804f66b4&gt;] jz4740_mmc_prepare_dma_data+0x74/0xa4 [&lt;804f6714&gt;] jz4740_mmc_pre_request+0x30/0x54 [&lt;804f4ff4&gt;] mmc_blk_mq_issue_rq+0x6e0/0x7bc [&lt;804f5590&gt;] mmc_mq_queue_rq+0x220/0x2d4 [&lt;8038b2c0&gt;] blk_mq_dispatch_rq_list+0x480/0x664 [&lt;80391040&gt;] blk_mq_do_dispatch_sched+0x2dc/0x370 [&lt;80391468&gt;] __blk_mq_sched_dispatch_requests+0xec/0x164 [&lt;80391540&gt;] blk_mq_sched_dispatch_requests+0x44/0x94 [&lt;80387900&gt;] __blk_mq_run_hw_queue+0xb0/0xcc [&lt;80134c14&gt;] process_one_work+0x1b8/0x264 [&lt;80134ff8&gt;] worker_thread+0x2ec/0x3b8 [&lt;8013b13c&gt;] kthread+0x104/0x10c [&lt;80101dcc&gt;] ret_from_kernel_thread+0x14/0x1c ---[ end trace 0000000000000000 ]---
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/353298cadbd4c7d8e8a16d6000066414694933c3 - () https://git.kernel.org/stable/c/353298cadbd4c7d8e8a16d6000066414694933c3 - Patch
References () https://git.kernel.org/stable/c/7923f95997a79cef2ad161a2facae64c25a0bca0 - () https://git.kernel.org/stable/c/7923f95997a79cef2ad161a2facae64c25a0bca0 - Patch
References () https://git.kernel.org/stable/c/807f90f1960a59dc557542b818c484a8db9ac978 - () https://git.kernel.org/stable/c/807f90f1960a59dc557542b818c484a8db9ac978 - Patch
References () https://git.kernel.org/stable/c/90281cadf5077f2d2bec8b08c2ead1f8cd12660e - () https://git.kernel.org/stable/c/90281cadf5077f2d2bec8b08c2ead1f8cd12660e - Patch
References () https://git.kernel.org/stable/c/a828920b9ec0d89d3011198d482b7fe224d2de19 - () https://git.kernel.org/stable/c/a828920b9ec0d89d3011198d482b7fe224d2de19 - Patch
References () https://git.kernel.org/stable/c/afadb04f1d6e74b18a253403f5274cde5e3fd7bd - () https://git.kernel.org/stable/c/afadb04f1d6e74b18a253403f5274cde5e3fd7bd - Patch

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-10-21 12:06

NVD link : CVE-2022-49522

Mitre link : CVE-2022-49522

CVE.ORG link : CVE-2022-49522

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo