PT-2026-2511 · Mlx5E+1 · Mlx5E+1

Published 2025-12-01 · Updated 2026-04-20 · CVE-2025-68779

Positive Technologies (AI Summary)

CVSS v2.0

5.2

Medium

Base vector

AV:L/AC:L/Au:S/C:P/I:N/A:C

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

Description The Linux kernel contains a flaw in the net/mlx5e module where the PSP (Profile Support Package) can be unregistered twice. This occurs through both the mlx5e remove and mlx5e nic cleanup functions calling mlx5e psp unregister, leading to a refcount underflow and potential use-after-free condition. The issue is observed in the function calls mlx5e remove -> mlx5e psp unregister and mlx5e nic cleanup -> mlx5e psp unregister.

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

Exploit

Use After Free

Double Free

Weakness Enumeration

CWE-416

CWE-415

Related Identifiers

BDU:2026-00745

CVE-2025-68779

Affected Products

Linux Kernel

Mlx5E

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68779.json · Exploit
• https://ubuntu.com/security/CVE-2025-68779 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-68779 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2025-68779 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00745 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2025-68779 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-68779 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-68779 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-68779 · Security Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://git.kernel.org/linus/35e93736f69963337912594eb3951ab320b77521 · Note
• https://lore.kernel.org/all/[e-mail] · Note
• https://git.kernel.org/stable/c/35e93736f69963337912594eb3951ab320b77521 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=35e93736f69963337912594eb3951ab320b77521 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=e12c912f92ccea671b514caf371f28485714bb4b · Note