PT-2025-8636 · Linux+2 · Linux Kernel+2

Brian King + 1 · Published 2025-02-26 · Updated 2025-04-15 · CVE-2022-49703

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 A vulnerability in the Linux kernel has been resolved, specifically in the ibmvfc module. The issue arises from the back pointer from a queue to the vhost adapter not being set until after subcrq interrupt registration, which can lead to a crash during kexec/kdump on Power 9 with legacy XICS interrupt controller. This crash occurs when a pending subcrq interrupt from the previous kernel is replayed immediately upon IRQ registration, resulting in the dereference of a garbage backpointer in ibmvfc interrupt scsi(). The kernel attempted to read a user page, which may indicate an exploit attempt.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2022-49703

OPENSUSE-SU-2025_1263-1

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1194-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1263-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1263-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1340

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49703.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:1263-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49703 · Security Note
• https://git.kernel.org/stable/c/8540f66196ca35b7b5e902932571c18b9fde0cd1 · Patch
• https://git.kernel.org/stable/c/aeaadcde1a60138bceb65de3cdaeec78170b4459 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49703 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1194-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49703 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49703 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49703 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49703 · Vendor Advisory