UBUNTU-CVE-2021-33656
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
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57 explicit affected versions
24 explicit affected versions
191 explicit affected versions
87 explicit affected versions
50 explicit affected versions
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40 explicit affected versions
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1 explicit affected versions
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12 explicit affected versions
12 explicit affected versions
1 explicit affected versions
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55 explicit affected versions
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12 explicit affected versions
53 explicit affected versions
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10 explicit affected versions
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1 explicit affected versions
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13 explicit affected versions
81 explicit affected versions
1 explicit affected versions
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33 explicit affected versions
10 explicit affected versions
66 explicit affected versions
11 explicit affected versions
12 explicit affected versions
89 explicit affected versions
7 explicit affected versions
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2 explicit affected versions
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1 explicit affected versions
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43 explicit affected versions
12 explicit affected versions
1 explicit affected versions
1 explicit affected versions
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1 explicit affected versions
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13 explicit affected versions
10 explicit affected versions
43 explicit affected versions
10 explicit affected versions
12 explicit affected versions
39 explicit affected versions
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16 explicit affected versions
13 explicit affected versions
37 explicit affected versions
38 explicit affected versions
9 explicit affected versions
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43 explicit affected versions
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20 explicit affected versions
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4 explicit affected versions
30 explicit affected versions
65 explicit affected versions
43 explicit affected versions
43 explicit affected versions
10 explicit affected versions
100 explicit affected versions
115 explicit affected versions
43 explicit affected versions
4 explicit affected versions
32 explicit affected versions
1 explicit affected versions
21 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch
- https://ubuntu.com/security/CVE-2021-33656
- https://ubuntu.com/security/notices/USN-5580-1
- https://ubuntu.com/security/notices/USN-5589-1
- https://ubuntu.com/security/notices/USN-5591-1
- https://ubuntu.com/security/notices/USN-5591-2
- https://ubuntu.com/security/notices/USN-5591-3
- https://ubuntu.com/security/notices/USN-5591-4
- https://ubuntu.com/security/notices/USN-5592-1
- https://ubuntu.com/security/notices/USN-5595-1
- https://ubuntu.com/security/notices/USN-5597-1
- https://ubuntu.com/security/notices/USN-5598-1
- https://ubuntu.com/security/notices/USN-5600-1
- https://ubuntu.com/security/notices/USN-5603-1
- https://ubuntu.com/security/notices/USN-5605-1
- https://ubuntu.com/security/notices/USN-5650-1
- https://www.cve.org/CVERecord?id=CVE-2021-33656
- https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel