UBUNTU-CVE-2020-36385
An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
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191 explicit affected versions
72 explicit affected versions
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50 explicit affected versions
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29 explicit affected versions
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66 explicit affected versions
1 explicit affected versions
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33 explicit affected versions
10 explicit affected versions
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74 explicit affected versions
7 explicit affected versions
36 explicit affected versions
2 explicit affected versions
70 explicit affected versions
32 explicit affected versions
1 explicit affected versions
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28 explicit affected versions
1 explicit affected versions
1 explicit affected versions
32 explicit affected versions
5 explicit affected versions
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1 explicit affected versions
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1 explicit affected versions
28 explicit affected versions
10 explicit affected versions
24 explicit affected versions
44 explicit affected versions
16 explicit affected versions
20 explicit affected versions
38 explicit affected versions
9 explicit affected versions
114 explicit affected versions
26 explicit affected versions
49 explicit affected versions
7 explicit affected versions
82 explicit affected versions
59 explicit affected versions
4 explicit affected versions
16 explicit affected versions
50 explicit affected versions
26 explicit affected versions
43 explicit affected versions
1 explicit affected versions
92 explicit affected versions
99 explicit affected versions
12 explicit affected versions
28 explicit affected versions
4 explicit affected versions
15 explicit affected versions
1 explicit affected versions
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c.
05 / REFERENCES
Further evidence
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10
- https://git.kernel.org/linus/f5449e74802c1112dea984aec8af7a33c4516af1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f5449e74802c1112dea984aec8af7a33c4516af1
- https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-ucma_close-2
- https://syzkaller.appspot.com/bug?id=457491c4672d7b52c1007db213d93e47c711fae6
- https://ubuntu.com/security/CVE-2020-36385
- https://ubuntu.com/security/notices/USN-5136-1
- https://ubuntu.com/security/notices/USN-5137-1
- https://ubuntu.com/security/notices/USN-5137-2
- https://ubuntu.com/security/notices/USN-5343-1
- https://www.cve.org/CVERecord?id=CVE-2020-36385