UBUNTU-CVE-2024-38633
In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Update uart_driver_registered on driver removal The removal of the last MAX3100 device triggers the removal of the driver. However, code doesn't update the respective global variable and after insmod — rmmod — insmod cycle the kernel oopses: max3100 spi-PRP0001:01: max3100_probe: adding port 0 BUG: kernel NULL pointer dereference, address: 0000000000000408 ... RIP: 0010:serial_core_register_port+0xa0/0x840 ... max3100_probe+0x1b6/0x280 [max3100] spi_probe+0x8d/0xb0 Update the actual state so next time UART driver will be registered again. Hugo also noticed, that the error path in the probe also affected by having the variable set, and not cleared. Instead of clearing it move the assignment after the successfull uart_register_driver() call.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
35 explicit affected versions
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6 explicit affected versions
35 explicit affected versions
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37 explicit affected versions
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33 explicit affected versions
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11 explicit affected versions
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7 explicit affected versions
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2 explicit affected versions
42 explicit affected versions
36 explicit affected versions
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10 explicit affected versions
26 explicit affected versions
11 explicit affected versions
29 explicit affected versions
1 explicit affected versions
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12 explicit affected versions
13 explicit affected versions
11 explicit affected versions
119 explicit affected versions
53 explicit affected versions
16 explicit affected versions
55 explicit affected versions
12 explicit affected versions
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3 explicit affected versions
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1 explicit affected versions
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51 explicit affected versions
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9 explicit affected versions
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5 explicit affected versions
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16 explicit affected versions
5 explicit affected versions
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1 explicit affected versions
10 explicit affected versions
8 explicit affected versions
13 explicit affected versions
82 explicit affected versions
13 explicit affected versions
47 explicit affected versions
7 explicit affected versions
74 explicit affected versions
46 explicit affected versions
10 explicit affected versions
13 explicit affected versions
12 explicit affected versions
82 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
41 explicit affected versions
37 explicit affected versions
12 explicit affected versions
14 explicit affected versions
38 explicit affected versions
44 explicit affected versions
9 explicit affected versions
44 explicit affected versions
11 explicit affected versions
4 explicit affected versions
52 explicit affected versions
7 explicit affected versions
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54 explicit affected versions
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102 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
50 explicit affected versions
95 explicit affected versions
13 explicit affected versions
43 explicit affected versions
48 explicit affected versions
126 explicit affected versions
146 explicit affected versions
10 explicit affected versions
8 explicit affected versions
7 explicit affected versions
14 explicit affected versions
83 explicit affected versions
4 explicit affected versions
72 explicit affected versions
11 explicit affected versions
1 explicit affected versions
49 explicit affected versions
5 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Update uart_driver_registered on driver removal The removal of the last MAX3100 device triggers the removal of the driver. However, code doesn't update the respective global variable and after insmod — rmmod — insmod cycle the kernel oopses: max3100 spi-PRP0001:01: max3100_probe: adding port 0 BUG: kernel NULL pointer dereference, address: 0000000000000408 ... RIP: 0010:serial_core_register_port+0xa0/0x840 ... max3100_probe+0x1b6/0x280 [max3100] spi_probe+0x8d/0xb0 Update the actual state so next time UART driver will be registered again. Hugo also noticed, that the error path in the probe also affected by having the variable set, and not cleared. Instead of clearing it move the assignment after the successfull uart_register_driver() call.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/712a1fcb38dc7cac6da63ee79a88708fbf9c45ec
- https://git.kernel.org/stable/c/21a61a7fbcfdd3493cede43ebc7c4dfae2147a8b
- https://git.kernel.org/stable/c/361a92c9038e8c8c3996f8eeaa14522a8ad90752
- https://git.kernel.org/stable/c/712a1fcb38dc7cac6da63ee79a88708fbf9c45ec
- https://git.kernel.org/stable/c/9db4222ed8cd3e50b81c8b910ae74c26427a4003
- https://git.kernel.org/stable/c/b6eb7aff23e05f362e8c9b560f6ac5e727b70e00
- https://git.kernel.org/stable/c/e8a10089eddba40d4b2080c9d3fc2d2b2488f762
- https://git.kernel.org/stable/c/e8e2a4339decad7e59425b594a98613402652d72
- https://git.kernel.org/stable/c/fa84ca78b048dfb00df0ef446f5c35e0a98ca6a0
- https://ubuntu.com/security/CVE-2024-38633
- https://ubuntu.com/security/notices/USN-6951-1
- https://ubuntu.com/security/notices/USN-6951-2
- https://ubuntu.com/security/notices/USN-6951-3
- https://ubuntu.com/security/notices/USN-6951-4
- https://ubuntu.com/security/notices/USN-6953-1
- https://ubuntu.com/security/notices/USN-6979-1
- https://ubuntu.com/security/notices/USN-6999-1
- https://ubuntu.com/security/notices/USN-6999-2
- https://ubuntu.com/security/notices/USN-7004-1
- https://ubuntu.com/security/notices/USN-7005-1
- https://ubuntu.com/security/notices/USN-7005-2
- https://ubuntu.com/security/notices/USN-7007-1
- https://ubuntu.com/security/notices/USN-7007-2
- https://ubuntu.com/security/notices/USN-7007-3
- https://ubuntu.com/security/notices/USN-7008-1
- https://ubuntu.com/security/notices/USN-7009-1
- https://ubuntu.com/security/notices/USN-7009-2
- https://ubuntu.com/security/notices/USN-7019-1
- https://ubuntu.com/security/notices/USN-7029-1
- https://ubuntu.com/security/notices/USN-7183-1
- https://ubuntu.com/security/notices/USN-7184-1
- https://ubuntu.com/security/notices/USN-7185-1
- https://ubuntu.com/security/notices/USN-7185-2
- https://www.cve.org/CVERecord?id=CVE-2024-38633