UBUNTU-CVE-2023-4273
A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.
02 / AFFECTED SOFTWARE
Affected packages
20 explicit affected versions
29 explicit affected versions
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6 explicit affected versions
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6 explicit affected versions
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24 explicit affected versions
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7 explicit affected versions
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35 explicit affected versions
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18 explicit affected versions
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1 explicit affected versions
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5 explicit affected versions
7 explicit affected versions
12 explicit affected versions
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12 explicit affected versions
7 explicit affected versions
12 explicit affected versions
12 explicit affected versions
3 explicit affected versions
37 explicit affected versions
4 explicit affected versions
12 explicit affected versions
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13 explicit affected versions
2 explicit affected versions
29 explicit affected versions
13 explicit affected versions
35 explicit affected versions
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23 explicit affected versions
10 explicit affected versions
11 explicit affected versions
12 explicit affected versions
7 explicit affected versions
7 explicit affected versions
24 explicit affected versions
16 explicit affected versions
32 explicit affected versions
10 explicit affected versions
26 explicit affected versions
7 explicit affected versions
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35 explicit affected versions
25 explicit affected versions
3 explicit affected versions
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12 explicit affected versions
24 explicit affected versions
14 explicit affected versions
9 explicit affected versions
8 explicit affected versions
5 explicit affected versions
8 explicit affected versions
5 explicit affected versions
13 explicit affected versions
7 explicit affected versions
27 explicit affected versions
10 explicit affected versions
7 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
21 explicit affected versions
37 explicit affected versions
38 explicit affected versions
25 explicit affected versions
9 explicit affected versions
25 explicit affected versions
11 explicit affected versions
32 explicit affected versions
3 explicit affected versions
6 explicit affected versions
4 explicit affected versions
1 explicit affected versions
30 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
8 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.
05 / REFERENCES
Further evidence
- https://access.redhat.com/security/cve/CVE-2023-4273
- https://dfir.ru/2023/08/23/cve-2023-4273-a-vulnerability-in-the-linux-exfat-driver/
- https://ubuntu.com/security/CVE-2023-4273
- https://ubuntu.com/security/notices/USN-6343-1
- https://ubuntu.com/security/notices/USN-6385-1
- https://ubuntu.com/security/notices/USN-6412-1
- https://ubuntu.com/security/notices/USN-6416-1
- https://ubuntu.com/security/notices/USN-6416-2
- https://ubuntu.com/security/notices/USN-6416-3
- https://ubuntu.com/security/notices/USN-6445-1
- https://ubuntu.com/security/notices/USN-6445-2
- https://ubuntu.com/security/notices/USN-6466-1
- https://www.cve.org/CVERecord?id=CVE-2023-4273