UBUNTU-CVE-2022-24448
An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup. If a regular file is found, ENOTDIR should occur, but the server instead returns uninitialized data in the file descriptor.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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82 explicit affected versions
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36 explicit affected versions
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58 explicit affected versions
36 explicit affected versions
43 explicit affected versions
3 explicit affected versions
125 explicit affected versions
107 explicit affected versions
37 explicit affected versions
4 explicit affected versions
25 explicit affected versions
1 explicit affected versions
14 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup. If a regular file is found, ENOTDIR should occur, but the server instead returns uninitialized data in the file descriptor.
05 / REFERENCES
Further evidence
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac795161c93699d600db16c1a8cc23a65a1eceaf
- https://github.com/torvalds/linux/commit/ac795161c93699d600db16c1a8cc23a65a1eceaf
- https://ubuntu.com/security/CVE-2022-24448
- https://ubuntu.com/security/notices/USN-5302-1
- https://ubuntu.com/security/notices/USN-5383-1
- https://ubuntu.com/security/notices/USN-5384-1
- https://ubuntu.com/security/notices/USN-5385-1
- https://ubuntu.com/security/notices/USN-7148-1
- https://www.cve.org/CVERecord?id=CVE-2022-24448
- https://www.spinics.net/lists/stable/msg531976.html