UBUNTU-CVE-2022-33740
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
02 / AFFECTED SOFTWARE
Affected packages
4 explicit affected versions
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3 explicit affected versions
6 explicit affected versions
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35 explicit affected versions
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102 explicit affected versions
1 explicit affected versions
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3 explicit affected versions
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1 explicit affected versions
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3 explicit affected versions
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1 explicit affected versions
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57 explicit affected versions
16 explicit affected versions
2 explicit affected versions
3 explicit affected versions
65 explicit affected versions
12 explicit affected versions
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10 explicit affected versions
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14 explicit affected versions
1 explicit affected versions
13 explicit affected versions
57 explicit affected versions
33 explicit affected versions
16 explicit affected versions
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68 explicit affected versions
11 explicit affected versions
12 explicit affected versions
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7 explicit affected versions
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86 explicit affected versions
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26 explicit affected versions
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14 explicit affected versions
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1 explicit affected versions
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12 explicit affected versions
5 explicit affected versions
1 explicit affected versions
1 explicit affected versions
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5 explicit affected versions
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1 explicit affected versions
44 explicit affected versions
13 explicit affected versions
12 explicit affected versions
45 explicit affected versions
6 explicit affected versions
10 explicit affected versions
12 explicit affected versions
41 explicit affected versions
44 explicit affected versions
16 explicit affected versions
13 explicit affected versions
37 explicit affected versions
38 explicit affected versions
4 explicit affected versions
9 explicit affected versions
4 explicit affected versions
121 explicit affected versions
7 explicit affected versions
12 explicit affected versions
45 explicit affected versions
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22 explicit affected versions
7 explicit affected versions
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76 explicit affected versions
4 explicit affected versions
32 explicit affected versions
9 explicit affected versions
67 explicit affected versions
45 explicit affected versions
43 explicit affected versions
12 explicit affected versions
99 explicit affected versions
117 explicit affected versions
45 explicit affected versions
4 explicit affected versions
34 explicit affected versions
1 explicit affected versions
23 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2022/07/05/6
- http://xenbits.xen.org/xsa/advisory-403.html
- https://ubuntu.com/security/CVE-2022-33740
- https://ubuntu.com/security/notices/USN-5572-1
- https://ubuntu.com/security/notices/USN-5572-2
- https://ubuntu.com/security/notices/USN-5579-1
- https://ubuntu.com/security/notices/USN-5623-1
- https://ubuntu.com/security/notices/USN-5624-1
- https://ubuntu.com/security/notices/USN-5633-1
- https://ubuntu.com/security/notices/USN-5635-1
- https://ubuntu.com/security/notices/USN-5640-1
- https://ubuntu.com/security/notices/USN-5644-1
- https://ubuntu.com/security/notices/USN-5648-1
- https://ubuntu.com/security/notices/USN-5655-1
- https://ubuntu.com/security/notices/USN-5668-1
- https://ubuntu.com/security/notices/USN-5669-1
- https://ubuntu.com/security/notices/USN-5669-2
- https://ubuntu.com/security/notices/USN-5677-1
- https://ubuntu.com/security/notices/USN-5678-1
- https://ubuntu.com/security/notices/USN-5679-1
- https://ubuntu.com/security/notices/USN-5682-1
- https://ubuntu.com/security/notices/USN-5683-1
- https://ubuntu.com/security/notices/USN-5684-1
- https://ubuntu.com/security/notices/USN-5687-1
- https://ubuntu.com/security/notices/USN-5695-1
- https://ubuntu.com/security/notices/USN-5706-1
- https://www.cve.org/CVERecord?id=CVE-2022-33740
- https://xenbits.xen.org/xsa/advisory-403.html
- https://xenbits.xenproject.org/xsa/advisory-403.txt