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CVE-2022-33742

Status Candidate

Overview

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).

Related Files

Ubuntu Security Notice USN-5706-1
Posted Oct 28, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5706-1 - It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose sensitive information. It was discovered that an out-of-bounds write vulnerability existed in the Video for Linux 2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-4159, CVE-2022-20369, CVE-2022-2318, CVE-2022-26365, CVE-2022-26373, CVE-2022-3176, CVE-2022-33740, CVE-2022-33742, CVE-2022-33744, CVE-2022-36879
SHA-256 | 7aaa31ceef76ec8bdfbe0b205ddec2f0fbf8452e3b09e76f3ff397adbff1ccef
Ubuntu Security Notice USN-5682-1
Posted Oct 17, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5682-1 - It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose sensitive information. It was discovered that an out-of-bounds write vulnerability existed in the Video for Linux 2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-4159, CVE-2022-20369, CVE-2022-2318, CVE-2022-26365, CVE-2022-26373, CVE-2022-3176, CVE-2022-33740, CVE-2022-33742, CVE-2022-33744, CVE-2022-36879
SHA-256 | 290d766370dff052f65510abe2bf8c1d9c4f1ae1e64f9589a9ec5f7dbb24a319
Ubuntu Security Notice USN-5683-1
Posted Oct 17, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5683-1 - It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Selim Enes Karaduman discovered that a race condition existed in the General notification queue implementation of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-33655, CVE-2022-1882, CVE-2022-2318, CVE-2022-26365, CVE-2022-26373, CVE-2022-3176, CVE-2022-33740, CVE-2022-33742, CVE-2022-33743, CVE-2022-33744, CVE-2022-34495, CVE-2022-36879, CVE-2022-36946, CVE-2022-39189
SHA-256 | 2f714311a2bf42767fd2c040e5e7b4c70e5d9ee2315aaccde091a713f4953e03
Ubuntu Security Notice USN-5677-1
Posted Oct 17, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5677-1 - It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose sensitive information. It was discovered that an out-of-bounds write vulnerability existed in the Video for Linux 2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-4159, CVE-2022-20369, CVE-2022-2318, CVE-2022-26365, CVE-2022-26373, CVE-2022-3176, CVE-2022-33740, CVE-2022-33742, CVE-2022-33744, CVE-2022-36879
SHA-256 | e2097990121803abdb83158d31fa16df3ba989a051c33b0cb6a47ce4a369c82a
Ubuntu Security Notice USN-5668-1
Posted Oct 11, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5668-1 - It was discovered that the BPF verifier in the Linux kernel did not properly handle internal data structures. A local attacker could use this to expose sensitive information. It was discovered that an out-of-bounds write vulnerability existed in the Video for Linux 2 implementation in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-4159, CVE-2022-20369, CVE-2022-2318, CVE-2022-26365, CVE-2022-26373, CVE-2022-3176, CVE-2022-33740, CVE-2022-33742, CVE-2022-33744, CVE-2022-36879
SHA-256 | aea4081e796ea4318e67523ffea3d182af837e95e646bf0b90c845b1763c2f0d
Debian Security Advisory 5191-1
Posted Jul 28, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5191-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2021-33655, CVE-2022-2318, CVE-2022-26365, CVE-2022-33740, CVE-2022-33741, CVE-2022-33742, CVE-2022-33743, CVE-2022-33744, CVE-2022-34918
SHA-256 | 914eefcc94d369cd1ff3058c3f8c135f235e5f4f9241b7711804c19b9c63953d
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