UBUNTU-CVE-2021-45868
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
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57 explicit affected versions
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12 explicit affected versions
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2 explicit affected versions
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10 explicit affected versions
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11 explicit affected versions
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77 explicit affected versions
7 explicit affected versions
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37 explicit affected versions
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32 explicit affected versions
2 explicit affected versions
1 explicit affected versions
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35 explicit affected versions
5 explicit affected versions
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1 explicit affected versions
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1 explicit affected versions
31 explicit affected versions
10 explicit affected versions
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30 explicit affected versions
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11 explicit affected versions
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19 explicit affected versions
53 explicit affected versions
30 explicit affected versions
43 explicit affected versions
1 explicit affected versions
105 explicit affected versions
102 explicit affected versions
32 explicit affected versions
4 explicit affected versions
19 explicit affected versions
1 explicit affected versions
9 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel before 5.15.3, fs/quota/quota_tree.c does not validate the block number in the quota tree (on disk). This can, for example, lead to a kernel/locking/rwsem.c use-after-free if there is a corrupted quota file.
05 / REFERENCES
Further evidence
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.3
- https://git.kernel.org/linus/9bf3d20331295b1ecb81f4ed9ef358c51699a050
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9bf3d20331295b1ecb81f4ed9ef358c51699a050
- https://ubuntu.com/security/CVE-2021-45868
- https://ubuntu.com/security/notices/USN-6001-1
- https://ubuntu.com/security/notices/USN-6013-1
- https://ubuntu.com/security/notices/USN-6014-1
- https://www.cve.org/CVERecord?id=CVE-2021-45868
- https://www.openwall.com/lists/oss-security/2022/03/17/1
- https://www.openwall.com/lists/oss-security/2022/03/17/2