PT-2025-8485 · Linux+3 · Linux Kernel+3

Andrii Nakryiko · Published 2022-05-13 · Updated 2026-05-26 · CVE-2022-49552

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 bug in the Linux kernel has been identified, related to the combination of JIT blinding and pointers to BPF subprogs. This issue causes a page fault when the kernel attempts to access an invalid address, resulting in a supervisor instruction fetch in kernel mode. The problem arises from the JIT blinding logic failing to recognize special instructions, specifically ld imm64 with an address of a BPF subprogram, and randomizing it. This leads to the second JIT phase missing the adjustment of the special ld imm64 instruction.

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

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALSA-2025_16880

AZL-68687

BDU:2026-03924

CVE-2022-49552

RHSA-2023:2458

RHSA-2023_2458

SUSE-SU-2025:1176-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

References · 1308

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49552.json · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49552 · Vendor Advisory
• https://git.kernel.org/stable/c/a029b02b47dd5bb87a21550d9d9a80cb4dd3f714 · Patch
• https://bdu.fstec.ru/vul/2026-03924 · Security Note
• https://git.kernel.org/stable/c/d106a3e96fca30e44081eae9c27aab28fc132a46 · Patch
• https://ubuntu.com/security/CVE-2022-49552 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49552 · Security Note
• https://osv.dev/vulnerability/AZL-68687 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49552 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49552 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49552 · Security Note
• https://git.kernel.org/stable/c/4b6313cf99b0d51b49aeaea98ec76ca8161ecb80 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49552 · Vendor Advisory