mmc: jz4740: Apply DMA engine limits to maximum segment size 漏洞信息(CVE-2022-49522)

一、漏洞 CVE-2022-49522 基础信息

AIGC 神龙大模型
美国国家漏洞数据库 NVD

漏洞标题

mmc: jz4740: 对最大段大小应用DMA引擎限制

来源：AIGC 神龙大模型

漏洞描述信息

N/A

来源：AIGC 神龙大模型

CVSS信息

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

来源：AIGC 神龙大模型

漏洞类别

未加控制的资源消耗(资源穷尽)

来源：AIGC 神龙大模型

漏洞标题

mmc: jz4740: Apply DMA engine limits to maximum segment size

来源：美国国家漏洞数据库 NVD

漏洞描述信息

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 ]---

来源：美国国家漏洞数据库 NVD

CVSS信息

N/A

来源：美国国家漏洞数据库 NVD

漏洞类别

N/A

来源：美国国家漏洞数据库 NVD

二、漏洞 CVE-2022-49522 的公开POC

#	POC 描述	源链接	神龙链接

三、漏洞 CVE-2022-49522 的情报信息

标题： mmc: jz4740: Apply DMA engine limits to maximum segment size - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： mmc: jz4740: Apply DMA engine limits to maximum segment size - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： mmc: jz4740: Apply DMA engine limits to maximum segment size - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： mmc: jz4740: Apply DMA engine limits to maximum segment size - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： mmc: jz4740: Apply DMA engine limits to maximum segment size - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
标题： mmc: jz4740: Apply DMA engine limits to maximum segment size - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
https://nvd.nist.gov/vuln/detail/CVE-2022-49522