PT-2025-35993 · Linux+1 · Linux Kernel+1

Published 2025-08-06 · Updated 2025-11-25 · CVE-2025-38720

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 deadlock issue exists in the hibmcge netdev within the Linux kernel. The hibmcge driver acquires the rtnl lock in pci error handlers.reset prepare() and releases it in pci error handlers.reset done(). During a PCI bus reset, the pci slot save and disable locked() function iterates through devices, potentially causing two hibmcge driver instances to sequentially request the rtnl lock, resulting in a deadlock. The patch resolves this by removing the rtnl lock during the reset process and adjusting the position of HBG NIC STATE RESETTING to prevent concurrent resets.

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

Exploit

Improper Locking

Weakness Enumeration

CWE-833

CWE-667

Related Identifiers

BDU:2026-02849

CVE-2025-38720

Affected Products

Astra Linux

Linux Kernel

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38720.json · Exploit
• https://git.kernel.org/stable/c/d85a6346fd6f595c4914205762d0cdf35c004a5e · Patch
• https://cve.org/CVERecord?id=CVE-2025-38720 · Security Note
• https://git.kernel.org/stable/c/1343a8994ca7dba78f5dd818e89d68331c21c35d · Patch
• https://bdu.fstec.ru/vul/2026-02849 · Security Note
• https://git.kernel.org/stable/c/c875503a9b9082928d7d3fc60b5400d16fbfae4e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-38720 · Security Note
• https://ubuntu.com/security/CVE-2025-38720 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-38720 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-38720 · Vendor Advisory
• https://twitter.com/CVEnew/status/1963637908793086169 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://lore.kernel.org/linux-cve-announce/2025090400-CVE-2025-38720-a45e@gregkh · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.16.2 · Note
• https://t.me/cveNotify/144017 · Telegram Post