CVE-2022-49983
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49983
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49983.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49983
- Downstream
- Related
- Published
- 2025-06-18T11:00:45.701Z
- Modified
- 2025-11-19T18:24:47.777165Z
- Summary
- udmabuf: Set the DMA mask for the udmabuf device (v2)
- Details
-
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 dmamapsgattrs+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:dmamapsgattrs+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: <TASK> dmamapsgtable+0x70/0xf0 kernel/dma/mapping.c:264 getsgtable.isra.0+0xe0/0x160 drivers/dma-buf/udmabuf.c:72 begincpuudmabuf+0x130/0x1d0 drivers/dma-buf/udmabuf.c:126 dmabufbegincpuaccess+0xfd/0x1d0 drivers/dma-buf/dma-buf.c:1164 dmabufioctl+0x259/0x2b0 drivers/dma-buf/dma-buf.c:363 vfsioctl fs/ioctl.c:51 [inline] _dosysioctl fs/ioctl.c:874 [inline] _sesysioctl fs/ioctl.c:860 [inline] _x64sysioctl+0x193/0x200 fs/ioctl.c:860 dosyscallx64 arch/x86/entry/common.c:50 [inline] dosyscall64+0x35/0xb0 arch/x86/entry/common.c:80 entrySYSCALL64afterhwframe+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 </TASK>
v2: Dont't forget to deregister if DMA mask setup fails.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/63d8c1933ed280717f934e2bc2edd869bb66f329
- https://git.kernel.org/stable/c/872875c9ecf8fa2e1d82bb2f2f1963f571aa8959
- https://git.kernel.org/stable/c/9e9fa6a9198b767b00f48160800128e83a038f9f
- https://git.kernel.org/stable/c/e658538c610c6047b3c9f552e73801894d9284b1
- https://git.kernel.org/stable/c/f2f6ea1a8da1317430a84701fc0170449ee88315
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfbb0de795078190a9834b3409e4b009cfb18a6d4Fixed63d8c1933ed280717f934e2bc2edd869bb66f329
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfbb0de795078190a9834b3409e4b009cfb18a6d4Fixed872875c9ecf8fa2e1d82bb2f2f1963f571aa8959
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfbb0de795078190a9834b3409e4b009cfb18a6d4Fixede658538c610c6047b3c9f552e73801894d9284b1
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfbb0de795078190a9834b3409e4b009cfb18a6d4Fixedf2f6ea1a8da1317430a84701fc0170449ee88315
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedfbb0de795078190a9834b3409e4b009cfb18a6d4Fixed9e9fa6a9198b767b00f48160800128e83a038f9f