CVE-2025-21791

HIGH EPSS 14.1%
Published Feb 27, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: vrf: use RCU protection in l3mdev_l3_out() l3mdev_l3_out() can be called without RCU being held: raw_sendmsg() ip_push_pending_frames() ip_send_skb() ip_local_out() __ip_local_out() l3mdev_ip_out() Add rcu_read_lock() / rcu_read_unlock() pair to avoid a potential UAF.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
14.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥4.9  –  <6.1.129
linuxlinux_kernel*≥6.2  –  <6.6.79
linuxlinux_kernel*≥6.7  –  <6.12.16
linuxlinux_kernel*≥6.13  –  <6.13.4
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 10

  • git.kernel.org https://git.kernel.org/stable/c/022cac1c693add610ae76ede03adf4d9d5a2cf21
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/20a3489b396764cc9376e32a9172bee26a89dc3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5bb4228c32261d06e4fbece37ec3828bcc005b6b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6d0ce46a93135d96b7fa075a94a88fe0da8e8773
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7b81425b517accefd46bee854d94954f5c57e019
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c40cb5c03e37552d6eff963187109e2c3f78ef6f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7574740be8ce68a57d0aece24987b9be2114c3c
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/022cac1c693add610ae76ede03adf4d9d5a2cf21
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/20a3489b396764cc9376e32a9172bee26a89dc3b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5bb4228c32261d06e4fbece37ec3828bcc005b6b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6ccaa5797f5362a2aad6baa6ddaf4715ac2dd51e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6d0ce46a93135d96b7fa075a94a88fe0da8e8773
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7b81425b517accefd46bee854d94954f5c57e019
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c40cb5c03e37552d6eff963187109e2c3f78ef6f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7574740be8ce68a57d0aece24987b9be2114c3c
    Patch