UBUNTU-CVE-2024-50005
In the Linux kernel, the following vulnerability has been resolved: mac802154: Fix potential RCU dereference issue in mac802154_scan_worker In the `mac802154_scan_worker` function, the `scan_req->type` field was accessed after the RCU read-side critical section was unlocked. According to RCU usage rules, this is illegal and can lead to unpredictable behavior, such as accessing memory that has been updated or causing use-after-free issues. This possible bug was identified using a static analysis tool developed by myself, specifically designed to detect RCU-related issues. To address this, the `scan_req->type` value is now stored in a local variable `scan_req_type` while still within the RCU read-side critical section. The `scan_req_type` is then used after the RCU lock is released, ensuring that the type value is safely accessed without violating RCU rules.
02 / AFFECTED SOFTWARE
Affected packages
29 explicit affected versions
10 explicit affected versions
11 explicit affected versions
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16 explicit affected versions
1 explicit affected versions
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7 explicit affected versions
26 explicit affected versions
37 explicit affected versions
10 explicit affected versions
10 explicit affected versions
10 explicit affected versions
13 explicit affected versions
13 explicit affected versions
4 explicit affected versions
37 explicit affected versions
13 explicit affected versions
8 explicit affected versions
4 explicit affected versions
8 explicit affected versions
19 explicit affected versions
23 explicit affected versions
7 explicit affected versions
10 explicit affected versions
33 explicit affected versions
16 explicit affected versions
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12 explicit affected versions
38 explicit affected versions
51 explicit affected versions
13 explicit affected versions
10 explicit affected versions
17 explicit affected versions
10 explicit affected versions
13 explicit affected versions
11 explicit affected versions
1 explicit affected versions
10 explicit affected versions
8 explicit affected versions
17 explicit affected versions
13 explicit affected versions
21 explicit affected versions
6 explicit affected versions
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12 explicit affected versions
7 explicit affected versions
14 explicit affected versions
18 explicit affected versions
11 explicit affected versions
12 explicit affected versions
17 explicit affected versions
26 explicit affected versions
1 explicit affected versions
18 explicit affected versions
23 explicit affected versions
7 explicit affected versions
14 explicit affected versions
5 explicit affected versions
22 explicit affected versions
15 explicit affected versions
12 explicit affected versions
3 explicit affected versions
17 explicit affected versions
26 explicit affected versions
12 explicit affected versions
21 explicit affected versions
44 explicit affected versions
10 explicit affected versions
4 explicit affected versions
4 explicit affected versions
16 explicit affected versions
9 explicit affected versions
12 explicit affected versions
13 explicit affected versions
7 explicit affected versions
19 explicit affected versions
13 explicit affected versions
7 explicit affected versions
10 explicit affected versions
14 explicit affected versions
11 explicit affected versions
18 explicit affected versions
3 explicit affected versions
16 explicit affected versions
43 explicit affected versions
11 explicit affected versions
20 explicit affected versions
20 explicit affected versions
35 explicit affected versions
12 explicit affected versions
13 explicit affected versions
6 explicit affected versions
12 explicit affected versions
50 explicit affected versions
11 explicit affected versions
12 explicit affected versions
27 explicit affected versions
12 explicit affected versions
7 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: mac802154: Fix potential RCU dereference issue in mac802154_scan_worker In the `mac802154_scan_worker` function, the `scan_req->type` field was accessed after the RCU read-side critical section was unlocked. According to RCU usage rules, this is illegal and can lead to unpredictable behavior, such as accessing memory that has been updated or causing use-after-free issues. This possible bug was identified using a static analysis tool developed by myself, specifically designed to detect RCU-related issues. To address this, the `scan_req->type` value is now stored in a local variable `scan_req_type` while still within the RCU read-side critical section. The `scan_req_type` is then used after the RCU lock is released, ensuring that the type value is safely accessed without violating RCU rules.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/bff1709b3980bd7f80be6786f64cc9a9ee9e56da
- https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a
- https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da
- https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013
- https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2
- https://ubuntu.com/security/CVE-2024-50005
- https://ubuntu.com/security/notices/USN-7276-1
- https://ubuntu.com/security/notices/USN-7277-1
- 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-7403-1
- https://www.cve.org/CVERecord?id=CVE-2024-50005