CVE-2026-23001

HIGH EPSS 8.6%
Published Jan 25, 20265mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jan 25, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlan_forward_source() Add RCU protection on (struct macvlan_source_entry)->vlan. Whenever macvlan_hash_del_source() is called, we must clear entry->vlan pointer before RCU grace period starts. This allows macvlan_forward_source() to skip over entries queued for freeing. Note that macvlan_dev are already RCU protected, as they are embedded in a standard netdev (netdev_priv(ndev)). https: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u

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
8.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 15

VendorProductVersionRange
linuxlinux_kernel*≥3.18.1  –  <5.10.249
linuxlinux_kernel*≥5.11  –  <5.15.199
linuxlinux_kernel*≥5.16  –  <6.1.162
linuxlinux_kernel*≥6.2  –  <6.6.122
linuxlinux_kernel*≥6.7  –  <6.12.67
linuxlinux_kernel*≥6.13  –  <6.18.7
linuxlinux_kernel3.18any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/15f6faf36e162532bec5cc05eb3fc622108bf2ed
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/232afc74a6dde0fe1830988e5827921f5ec9bb3f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/484919832e2db6ce1e8add92c469e5d459a516b5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6dbead9c7677186f22b7981dd085a0feec1f038e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7470a7a63dc162f07c26dbf960e41ee1e248d80e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8133e85b8a3ec9f10d861e0002ec6037256e987e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8518712a2ca952d6da2238c6f0a16b4ae5ea3f13
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/15f6faf36e162532bec5cc05eb3fc622108bf2ed
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/232afc74a6dde0fe1830988e5827921f5ec9bb3f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/484919832e2db6ce1e8add92c469e5d459a516b5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6dbead9c7677186f22b7981dd085a0feec1f038e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7470a7a63dc162f07c26dbf960e41ee1e248d80e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8133e85b8a3ec9f10d861e0002ec6037256e987e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8518712a2ca952d6da2238c6f0a16b4ae5ea3f13
    Patch