PT-2025-8559 · Linux+4 · Linux Kernel+4

Yanghang Liu · Published 2022-07-13 · Updated 2025-05-09 · CVE-2022-49626

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A use-after-free issue has been detected in the Linux kernel when disabling SR-IOV. The issue occurs when the vf->pci dev pointer is freed from pci disable sriov and later read in efx ef10 sriov free vf vports, called from efx ef10 sriov free vf vswitching. This can be triggered by writing to the /sys/class/net/enp65s0f0np0/device/sriov numvfs file. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

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

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-04422

CESA-2022_7683

CVE-2022-49626

OESA-2025-1465

RHSA-2022:7683

RHSA-2022:8267

RHSA-2022_7683

RHSA-2022_8267

SUSE-SU-2025:0834-1

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_0834-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Centos

Linux Kernel

Red Hat

Suse

References · 1522

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49626.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-53032 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52935 · Security Note
• https://git.kernel.org/stable/c/9c854ae512b89229aeee93849e9bd4c115b37909 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-21764 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49385 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:0834-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://git.kernel.org/stable/c/c9e75bb22a26e391f189f5a5133dd63dcb57fdaa · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-21761 · Security Note
• https://git.kernel.org/stable/c/bcad880865bfb421885364b1f0c7351280fe2b97 · Patch
• https://git.kernel.org/stable/c/58d93e9d160c0de6d867c7eb4c2206671a351eb1 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-58094 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-37785 · Security Note