UBUNTU-CVE-2024-46780
In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing, and even abandoned when degrading to one side due to backing device issues. So, accessing them requires mutual exclusion using the reader/writer semaphore "nilfs->ns_sem". Some sysfs attribute show methods read this superblock buffer without the necessary mutual exclusion, which can cause problems with pointer dereferencing and memory access, so fix it.
02 / AFFECTED SOFTWARE
Affected packages
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52 explicit affected versions
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50 explicit affected versions
10 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
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151 explicit affected versions
10 explicit affected versions
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12 explicit affected versions
14 explicit affected versions
88 explicit affected versions
4 explicit affected versions
77 explicit affected versions
11 explicit affected versions
1 explicit affected versions
53 explicit affected versions
10 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: nilfs2: protect references to superblock parameters exposed in sysfs The superblock buffers of nilfs2 can not only be overwritten at runtime for modifications/repairs, but they are also regularly swapped, replaced during resizing, and even abandoned when degrading to one side due to backing device issues. So, accessing them requires mutual exclusion using the reader/writer semaphore "nilfs->ns_sem". Some sysfs attribute show methods read this superblock buffer without the necessary mutual exclusion, which can cause problems with pointer dereferencing and memory access, so fix it.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/683408258917541bdb294cd717c210a04381931e
- https://git.kernel.org/stable/c/157c0d94b4c40887329418c70ef4edd1a8d6b4ed
- https://git.kernel.org/stable/c/19cfeba0e4b8eda51484fcf8cf7d150418e1d880
- https://git.kernel.org/stable/c/683408258917541bdb294cd717c210a04381931e
- https://git.kernel.org/stable/c/8c6e43b3d5f109cf9c61bc188fcc8175404e924f
- https://git.kernel.org/stable/c/962562d4c70c5cdeb4e955d63ff2017c4eca1aad
- https://git.kernel.org/stable/c/b14e7260bb691d7f563f61da07d61e3c8b59a614
- https://git.kernel.org/stable/c/b90beafac05931cbfcb6b1bd4f67c1923f47040e
- https://git.kernel.org/stable/c/ba97ba173f9625d5f34a986088979eae8b80d38e
- https://ubuntu.com/security/CVE-2024-46780
- https://ubuntu.com/security/notices/USN-7088-1
- https://ubuntu.com/security/notices/USN-7088-2
- https://ubuntu.com/security/notices/USN-7088-3
- https://ubuntu.com/security/notices/USN-7088-4
- https://ubuntu.com/security/notices/USN-7088-5
- https://ubuntu.com/security/notices/USN-7100-1
- https://ubuntu.com/security/notices/USN-7100-2
- https://ubuntu.com/security/notices/USN-7119-1
- https://ubuntu.com/security/notices/USN-7123-1
- https://ubuntu.com/security/notices/USN-7144-1
- https://ubuntu.com/security/notices/USN-7154-1
- https://ubuntu.com/security/notices/USN-7154-2
- https://ubuntu.com/security/notices/USN-7155-1
- https://ubuntu.com/security/notices/USN-7156-1
- https://ubuntu.com/security/notices/USN-7194-1
- https://ubuntu.com/security/notices/USN-7196-1
- https://ubuntu.com/security/notices/USN-7496-1
- https://ubuntu.com/security/notices/USN-7496-3
- https://ubuntu.com/security/notices/USN-7496-4
- https://ubuntu.com/security/notices/USN-7496-5
- https://ubuntu.com/security/notices/USN-7506-1
- https://ubuntu.com/security/notices/USN-7506-2
- https://ubuntu.com/security/notices/USN-7506-3
- https://ubuntu.com/security/notices/USN-7506-4
- https://www.cve.org/CVERecord?id=CVE-2024-46780