ghsa-cpfv-gmqv-c546
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
udmabuf: Set the DMA mask for the udmabuf device (v2)
If the DMA mask is not set explicitly, the following warning occurs when the userspace tries to access the dma-buf via the CPU as reported by syzbot here:
WARNING: CPU: 1 PID: 3595 at kernel/dma/mapping.c:188 __dma_map_sg_attrs+0x181/0x1f0 kernel/dma/mapping.c:188 Modules linked in: CPU: 0 PID: 3595 Comm: syz-executor249 Not tainted 5.17.0-rc2-syzkaller-00316-g0457e5153e0e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__dma_map_sg_attrs+0x181/0x1f0 kernel/dma/mapping.c:188 Code: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 71 4c 8b 3d c0 83 b5 0d e9 db fe ff ff e8 b6 0f 13 00 0f 0b e8 af 0f 13 00 <0f> 0b 45 31 e4 e9 54 ff ff ff e8 a0 0f 13 00 49 8d 7f 50 48 b8 00 RSP: 0018:ffffc90002a07d68 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88807e25e2c0 RSI: ffffffff81649e91 RDI: ffff88801b848408 RBP: ffff88801b848000 R08: 0000000000000002 R09: ffff88801d86c74f R10: ffffffff81649d72 R11: 0000000000000001 R12: 0000000000000002 R13: ffff88801d86c680 R14: 0000000000000001 R15: 0000000000000000 FS: 0000555556e30300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000cc CR3: 000000001d74a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dma_map_sgtable+0x70/0xf0 kernel/dma/mapping.c:264 get_sg_table.isra.0+0xe0/0x160 drivers/dma-buf/udmabuf.c:72 begin_cpu_udmabuf+0x130/0x1d0 drivers/dma-buf/udmabuf.c:126 dma_buf_begin_cpu_access+0xfd/0x1d0 drivers/dma-buf/dma-buf.c:1164 dma_buf_ioctl+0x259/0x2b0 drivers/dma-buf/dma-buf.c:363 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f62fcf530f9 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe3edab9b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f62fcf530f9 RDX: 0000000020000200 RSI: 0000000040086200 RDI: 0000000000000006 RBP: 00007f62fcf170e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f62fcf17170 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
v2: Dont't forget to deregister if DMA mask setup fails.
{
"affected": [],
"aliases": [
"CVE-2022-49983"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T11:15:25Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nudmabuf: Set the DMA mask for the udmabuf device (v2)\n\nIf the DMA mask is not set explicitly, the following warning occurs\nwhen the userspace tries to access the dma-buf via the CPU as\nreported by syzbot here:\n\nWARNING: CPU: 1 PID: 3595 at kernel/dma/mapping.c:188\n__dma_map_sg_attrs+0x181/0x1f0 kernel/dma/mapping.c:188\nModules linked in:\nCPU: 0 PID: 3595 Comm: syz-executor249 Not tainted\n5.17.0-rc2-syzkaller-00316-g0457e5153e0e #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS\nGoogle 01/01/2011\nRIP: 0010:__dma_map_sg_attrs+0x181/0x1f0 kernel/dma/mapping.c:188\nCode: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 71 4c 8b 3d c0\n83 b5 0d e9 db fe ff ff e8 b6 0f 13 00 0f 0b e8 af 0f 13 00 \u003c0f\u003e 0b 45\n 31 e4 e9 54 ff ff ff e8 a0 0f 13 00 49 8d 7f 50 48 b8 00\nRSP: 0018:ffffc90002a07d68 EFLAGS: 00010293\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: ffff88807e25e2c0 RSI: ffffffff81649e91 RDI: ffff88801b848408\nRBP: ffff88801b848000 R08: 0000000000000002 R09: ffff88801d86c74f\nR10: ffffffff81649d72 R11: 0000000000000001 R12: 0000000000000002\nR13: ffff88801d86c680 R14: 0000000000000001 R15: 0000000000000000\nFS: 0000555556e30300(0000) GS:ffff8880b9d00000(0000)\nknlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00000000200000cc CR3: 000000001d74a000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n dma_map_sgtable+0x70/0xf0 kernel/dma/mapping.c:264\n get_sg_table.isra.0+0xe0/0x160 drivers/dma-buf/udmabuf.c:72\n begin_cpu_udmabuf+0x130/0x1d0 drivers/dma-buf/udmabuf.c:126\n dma_buf_begin_cpu_access+0xfd/0x1d0 drivers/dma-buf/dma-buf.c:1164\n dma_buf_ioctl+0x259/0x2b0 drivers/dma-buf/dma-buf.c:363\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:874 [inline]\n __se_sys_ioctl fs/ioctl.c:860 [inline]\n __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f62fcf530f9\nCode: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89\nf7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01\nf0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007ffe3edab9b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f62fcf530f9\nRDX: 0000000020000200 RSI: 0000000040086200 RDI: 0000000000000006\nRBP: 00007f62fcf170e0 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007f62fcf17170\nR13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\n \u003c/TASK\u003e\n\nv2: Dont\u0027t forget to deregister if DMA mask setup fails.",
"id": "GHSA-cpfv-gmqv-c546",
"modified": "2025-06-18T12:30:39Z",
"published": "2025-06-18T12:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49983"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/63d8c1933ed280717f934e2bc2edd869bb66f329"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/872875c9ecf8fa2e1d82bb2f2f1963f571aa8959"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/9e9fa6a9198b767b00f48160800128e83a038f9f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e658538c610c6047b3c9f552e73801894d9284b1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f2f6ea1a8da1317430a84701fc0170449ee88315"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
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