Vulnerability Monitor

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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).

Published

2022-07-05T13:15:08.477

Last Modified

2024-11-21T07:08:26.620

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.1 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

4.9

Weaknesses

Type: Primary
CWE-212

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	fedoraproject	fedora	35	Yes
Operating System	fedoraproject	fedora	36	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes
Operating System	linux	linux_kernel	< 4.9.322	Yes
Operating System	linux	linux_kernel	< 4.14.287	Yes
Operating System	linux	linux_kernel	< 4.19.251	Yes
Operating System	linux	linux_kernel	< 5.4.204	Yes
Operating System	linux	linux_kernel	< 5.10.129	Yes
Operating System	linux	linux_kernel	< 5.15.53	Yes
Operating System	linux	linux_kernel	< 5.18.10	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	linux	linux_kernel	5.19	Yes
Operating System	xen	xen	-	Yes

References

http://www.openwall.com/lists/oss-security/2022/07/05/6 Mailing List, Patch, Third Party Advisory ([email protected])
http://xenbits.xen.org/xsa/advisory-403.html Patch, Vendor Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/ ([email protected])
https://www.debian.org/security/2022/dsa-5191 Third Party Advisory ([email protected])
https://xenbits.xenproject.org/xsa/advisory-403.txt Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2022/07/05/6 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://xenbits.xen.org/xsa/advisory-403.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/ (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2022/dsa-5191 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://xenbits.xenproject.org/xsa/advisory-403.txt Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)