UBUNTU-CVE-2020-11565
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”
02 / AFFECTED SOFTWARE
Affected packages
78 explicit affected versions
37 explicit affected versions
6 explicit affected versions
19 explicit affected versions
6 explicit affected versions
191 explicit affected versions
42 explicit affected versions
8 explicit affected versions
23 explicit affected versions
1 explicit affected versions
48 explicit affected versions
23 explicit affected versions
1 explicit affected versions
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1 explicit affected versions
1 explicit affected versions
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15 explicit affected versions
7 explicit affected versions
10 explicit affected versions
23 explicit affected versions
45 explicit affected versions
22 explicit affected versions
1 explicit affected versions
8 explicit affected versions
6 explicit affected versions
40 explicit affected versions
1 explicit affected versions
8 explicit affected versions
19 explicit affected versions
23 explicit affected versions
2 explicit affected versions
11 explicit affected versions
80 explicit affected versions
7 explicit affected versions
2 explicit affected versions
43 explicit affected versions
47 explicit affected versions
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1 explicit affected versions
56 explicit affected versions
1 explicit affected versions
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1 explicit affected versions
67 explicit affected versions
25 explicit affected versions
44 explicit affected versions
10 explicit affected versions
26 explicit affected versions
6 explicit affected versions
38 explicit affected versions
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87 explicit affected versions
69 explicit affected versions
22 explicit affected versions
33 explicit affected versions
27 explicit affected versions
12 explicit affected versions
2 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bounds write because an empty nodelist is mishandled during mount option parsing, aka CID-aa9f7d5172fa. NOTE: Someone in the security community disagrees that this is a vulnerability because the issue “is a bug in parsing mount options which can only be specified by a privileged user, so triggering the bug does not grant any powers not already held.”
05 / REFERENCES
Further evidence
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://git.kernel.org/linus/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://github.com/torvalds/linux/commit/aa9f7d5172fac9bf1f09e678c35e287a40a7b7dd
- https://ubuntu.com/security/CVE-2020-11565
- https://ubuntu.com/security/notices/USN-4363-1
- https://ubuntu.com/security/notices/USN-4364-1
- https://ubuntu.com/security/notices/USN-4367-1
- https://ubuntu.com/security/notices/USN-4368-1
- https://ubuntu.com/security/notices/USN-4369-1
- https://www.cve.org/CVERecord?id=CVE-2020-11565