UBUNTU-CVE-2024-49985
In the Linux kernel, the following vulnerability has been resolved: i2c: stm32f7: Do not prepare/unprepare clock during runtime suspend/resume In case there is any sort of clock controller attached to this I2C bus controller, for example Versaclock or even an AIC32x4 I2C codec, then an I2C transfer triggered from the clock controller clk_ops .prepare callback may trigger a deadlock on drivers/clk/clk.c prepare_lock mutex. This is because the clock controller first grabs the prepare_lock mutex and then performs the prepare operation, including its I2C access. The I2C access resumes this I2C bus controller via .runtime_resume callback, which calls clk_prepare_enable(), which attempts to grab the prepare_lock mutex again and deadlocks. Since the clock are already prepared since probe() and unprepared in remove(), use simple clk_enable()/clk_disable() calls to enable and disable the clock on runtime suspend and resume, to avoid hitting the prepare_lock mutex.
02 / AFFECTED SOFTWARE
Affected packages
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
56 explicit affected versions
7 explicit affected versions
29 explicit affected versions
63 explicit affected versions
4 explicit affected versions
11 explicit affected versions
88 explicit affected versions
12 explicit affected versions
99 explicit affected versions
14 explicit affected versions
1 explicit affected versions
13 explicit affected versions
10 explicit affected versions
10 explicit affected versions
33 explicit affected versions
1 explicit affected versions
8 explicit affected versions
7 explicit affected versions
2 explicit affected versions
50 explicit affected versions
10 explicit affected versions
14 explicit affected versions
12 explicit affected versions
91 explicit affected versions
7 explicit affected versions
10 explicit affected versions
10 explicit affected versions
17 explicit affected versions
48 explicit affected versions
39 explicit affected versions
53 explicit affected versions
50 explicit affected versions
6 explicit affected versions
11 explicit affected versions
12 explicit affected versions
19 explicit affected versions
6 explicit affected versions
63 explicit affected versions
72 explicit affected versions
58 explicit affected versions
49 explicit affected versions
10 explicit affected versions
17 explicit affected versions
55 explicit affected versions
7 explicit affected versions
54 explicit affected versions
12 explicit affected versions
17 explicit affected versions
99 explicit affected versions
13 explicit affected versions
14 explicit affected versions
35 explicit affected versions
101 explicit affected versions
15 explicit affected versions
18 explicit affected versions
18 explicit affected versions
16 explicit affected versions
64 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
22 explicit affected versions
21 explicit affected versions
16 explicit affected versions
56 explicit affected versions
18 explicit affected versions
7 explicit affected versions
12 explicit affected versions
1 explicit affected versions
46 explicit affected versions
12 explicit affected versions
14 explicit affected versions
7 explicit affected versions
12 explicit affected versions
13 explicit affected versions
104 explicit affected versions
112 explicit affected versions
12 explicit affected versions
12 explicit affected versions
11 explicit affected versions
4 explicit affected versions
10 explicit affected versions
37 explicit affected versions
37 explicit affected versions
26 explicit affected versions
13 explicit affected versions
10 explicit affected versions
29 explicit affected versions
92 explicit affected versions
13 explicit affected versions
60 explicit affected versions
11 explicit affected versions
87 explicit affected versions
57 explicit affected versions
104 explicit affected versions
19 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
1 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
20 explicit affected versions
102 explicit affected versions
46 explicit affected versions
40 explicit affected versions
56 explicit affected versions
10 explicit affected versions
20 explicit affected versions
26 explicit affected versions
18 explicit affected versions
37 explicit affected versions
1 explicit affected versions
13 explicit affected versions
19 explicit affected versions
62 explicit affected versions
16 explicit affected versions
59 explicit affected versions
47 explicit affected versions
3 explicit affected versions
1 explicit affected versions
1 explicit affected versions
2 explicit affected versions
69 explicit affected versions
51 explicit affected versions
7 explicit affected versions
17 explicit affected versions
12 explicit affected versions
45 explicit affected versions
27 explicit affected versions
31 explicit affected versions
1 explicit affected versions
20 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
16 explicit affected versions
13 explicit affected versions
91 explicit affected versions
13 explicit affected versions
55 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
21 explicit affected versions
14 explicit affected versions
11 explicit affected versions
38 explicit affected versions
49 explicit affected versions
9 explicit affected versions
48 explicit affected versions
11 explicit affected versions
54 explicit affected versions
13 explicit affected versions
43 explicit affected versions
57 explicit affected versions
10 explicit affected versions
8 explicit affected versions
15 explicit affected versions
14 explicit affected versions
92 explicit affected versions
4 explicit affected versions
78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
12 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: i2c: stm32f7: Do not prepare/unprepare clock during runtime suspend/resume In case there is any sort of clock controller attached to this I2C bus controller, for example Versaclock or even an AIC32x4 I2C codec, then an I2C transfer triggered from the clock controller clk_ops .prepare callback may trigger a deadlock on drivers/clk/clk.c prepare_lock mutex. This is because the clock controller first grabs the prepare_lock mutex and then performs the prepare operation, including its I2C access. The I2C access resumes this I2C bus controller via .runtime_resume callback, which calls clk_prepare_enable(), which attempts to grab the prepare_lock mutex again and deadlocks. Since the clock are already prepared since probe() and unprepared in remove(), use simple clk_enable()/clk_disable() calls to enable and disable the clock on runtime suspend and resume, to avoid hitting the prepare_lock mutex.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/048bbbdbf85e5e00258dfb12f5e368f908801d7b
- https://git.kernel.org/stable/c/048bbbdbf85e5e00258dfb12f5e368f908801d7b
- https://git.kernel.org/stable/c/1883cad2cc629ded4a3556c0bbb8b42533ad8764
- https://git.kernel.org/stable/c/22a1f8a5b56ba93d3e8b7a1dafa24e01c8bb48ba
- https://git.kernel.org/stable/c/894cd5f5fd9061983445bbd1fa3d81be43095344
- https://git.kernel.org/stable/c/9b8bc33ad64192f54142396470cc34ce539a8940
- https://git.kernel.org/stable/c/c2024b1a583ab9176c797ea1e5f57baf8d5e2682
- https://git.kernel.org/stable/c/fac3c9f7784e8184c0338e9f0877b81e55d3ef1c
- https://ubuntu.com/security/CVE-2024-49985
- https://ubuntu.com/security/notices/USN-7166-1
- https://ubuntu.com/security/notices/USN-7166-2
- https://ubuntu.com/security/notices/USN-7166-3
- https://ubuntu.com/security/notices/USN-7166-4
- https://ubuntu.com/security/notices/USN-7186-1
- https://ubuntu.com/security/notices/USN-7186-2
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7276-1
- https://ubuntu.com/security/notices/USN-7277-1
- https://ubuntu.com/security/notices/USN-7293-1
- https://ubuntu.com/security/notices/USN-7294-1
- https://ubuntu.com/security/notices/USN-7294-2
- https://ubuntu.com/security/notices/USN-7294-3
- https://ubuntu.com/security/notices/USN-7294-4
- https://ubuntu.com/security/notices/USN-7295-1
- https://ubuntu.com/security/notices/USN-7301-1
- https://ubuntu.com/security/notices/USN-7303-1
- https://ubuntu.com/security/notices/USN-7303-2
- https://ubuntu.com/security/notices/USN-7303-3
- https://ubuntu.com/security/notices/USN-7304-1
- https://ubuntu.com/security/notices/USN-7310-1
- https://ubuntu.com/security/notices/USN-7311-1
- https://ubuntu.com/security/notices/USN-7384-1
- https://ubuntu.com/security/notices/USN-7384-2
- https://ubuntu.com/security/notices/USN-7385-1
- https://ubuntu.com/security/notices/USN-7386-1
- https://ubuntu.com/security/notices/USN-7393-1
- https://ubuntu.com/security/notices/USN-7401-1
- https://ubuntu.com/security/notices/USN-7403-1
- https://ubuntu.com/security/notices/USN-7413-1
- https://ubuntu.com/security/notices/USN-7468-1
- https://ubuntu.com/security/notices/USN-7539-1
- https://ubuntu.com/security/notices/USN-7540-1
- https://www.cve.org/CVERecord?id=CVE-2024-49985