PT-2022-7634 · Linux+2 · Linux Kernel+2

Michael Kelley · Published 2022-12-14 · Updated 2024-09-27 · CVE-2022-48890

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a swiotlb bounce buffer leak in confidential VMs. The storvsc queuecommand() function maps the scatter/gather list using scsi dma map(), which allocates swiotlb bounce buffers in a confidential VM. If the I/O submission fails in storvsc do io(), the I/O is typically retried by higher-level code, but the bounce buffer memory is never freed. This can lead to a denial of service, as enough bounce buffer memory leaks can cause the confidential VM to be unable to perform any I/O. The same problem can arise in non-confidential VMs with the kernel boot parameter swiotlb=force.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2024-07592

CVE-2022-48890

OPENSUSE-SU-2024_3190-1

OPENSUSE-SU-2024_3209-1

OPENSUSE-SU-2024_3408-1

OPENSUSE-SU-2024_3483-1

SUSE-SU-2024:3190-1

SUSE-SU-2024:3209-1

SUSE-SU-2024:3227-1

SUSE-SU-2024:3408-1

SUSE-SU-2024:3483-1

Affected Products

Linux Kernel

Red Os

Suse

References · 671

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48890.json · Exploit
• 🔥 https://github.com/tr3ee/CVE-2022-23222 · Exploit
• 🔥 https://github.com/tr3ee/CVE-2021-4204 · Exploit
• 🔥 https://github.com/PenteraIO/CVE-2022-23222-POC · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2024:3408-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-48890 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:3190-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-07592 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:3209-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-48890 · Security Note
• https://git.kernel.org/stable/c/67ff3d0a49f3d445c3922e30a54e03c161da561e · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-48890 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48890 · Vendor Advisory
• https://git.kernel.org/stable/c/87c71e88f6a6619ffb1ff88f84dff48ef6d57adb · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:3483-1 · Vendor Advisory