UBUNTU-CVE-2021-41864
prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
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74 explicit affected versions
35 explicit affected versions
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27 explicit affected versions
2 explicit affected versions
86 explicit affected versions
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8 explicit affected versions
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38 explicit affected versions
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22 explicit affected versions
52 explicit affected versions
1 explicit affected versions
21 explicit affected versions
1 explicit affected versions
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13 explicit affected versions
68 explicit affected versions
1 explicit affected versions
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11 explicit affected versions
10 explicit affected versions
76 explicit affected versions
7 explicit affected versions
38 explicit affected versions
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34 explicit affected versions
1 explicit affected versions
6 explicit affected versions
17 explicit affected versions
30 explicit affected versions
1 explicit affected versions
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34 explicit affected versions
5 explicit affected versions
28 explicit affected versions
1 explicit affected versions
28 explicit affected versions
9 explicit affected versions
1 explicit affected versions
30 explicit affected versions
10 explicit affected versions
26 explicit affected versions
44 explicit affected versions
16 explicit affected versions
7 explicit affected versions
22 explicit affected versions
38 explicit affected versions
9 explicit affected versions
28 explicit affected versions
9 explicit affected versions
84 explicit affected versions
61 explicit affected versions
4 explicit affected versions
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52 explicit affected versions
28 explicit affected versions
43 explicit affected versions
1 explicit affected versions
101 explicit affected versions
12 explicit affected versions
30 explicit affected versions
4 explicit affected versions
17 explicit affected versions
1 explicit affected versions
8 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=30e29a9a2bc6a4888335a6ede968b75cd329657a
- https://github.com/torvalds/linux/commit/30e29a9a2bc6a4888335a6ede968b75cd329657a
- https://ubuntu.com/security/CVE-2021-41864
- https://ubuntu.com/security/notices/USN-5139-1
- https://ubuntu.com/security/notices/USN-5140-1
- https://ubuntu.com/security/notices/USN-5208-1
- https://ubuntu.com/security/notices/USN-5209-1
- https://ubuntu.com/security/notices/USN-5210-1
- https://ubuntu.com/security/notices/USN-5218-1
- https://www.cve.org/CVERecord?id=CVE-2021-41864