01 Record

CVE-2026-23273

macvlan: observe an RCU grace period in macvlan_common_newlink() error path

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

macvlan: observe an RCU grace period in macvlan_common_newlink() error path

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 2.6% of scored records. A rank, not a probability.
NVD base score: 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-07-14.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-03-20 08:08Z5 MO AGO

Last updated

2026-08-05 12:21Z1 MO AGO

Reserved

2026-01-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant
CWE-364Signal Handler Race ConditionBase

Data version

5.2

Document digest

87a7f80f93429ae56d9c9a97ebedba7377496c9925777e675340ea04c63a9202

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxda5c6b8ae47e414be47e5e04def15b25d5c962dc to < 91e4ff8d966978901630fc29582c1a76d3c6e46c, 5dae6b36a7cb7a4fcf4121b95e9ca7f96f816c8a to < 3d94323c80d7fc4da5f10f9bb06a45d39d5d3cc4, c43d0e787cbba569ec9d11579ed370b50fab6c9c to < 721eb342d9ba19bad5c4815ea3921465158b7362, 11ba9f0dc865136174cb98834280fb21bbc950c7 to < 19c7d8ac51988d053709c1e85bd8482076af845d, 986967a162142710076782d5b93daab93a892980 to < a1f686d273d129b45712d95f4095843b864466bd, cdedcd5aa3f3cb8b7ae0f87ab3a936d0bd583d66 to < d34f7a8aa9a25b7e64e0e46e444697c0f702374d, f8db6475a83649689c087a8f52486fcc53e627e9 to < 1e58ae87ad1e6e24368dea9aec9048c758cd0e2b, f8db6475a83649689c087a8f52486fcc53e627e9 to < e3f000f0dee1bfab52e2e61ca6a3835d9e187e35, 5.10.250 to < 5.10.252, 5.15.200 to < 5.15.202, 6.1.163 to < 6.1.165, 6.6.124 to < 6.6.128, 6.12.70 to < 6.12.75, 6.18.10 to < 6.18.14, 6.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/91e4ff8d966978901630fc29582c1a76d3c6e46c
git.kernel.orghttps://git.kernel.org/stable/c/3d94323c80d7fc4da5f10f9bb06a45d39d5d3cc4
git.kernel.orghttps://git.kernel.org/stable/c/721eb342d9ba19bad5c4815ea3921465158b7362
git.kernel.orghttps://git.kernel.org/stable/c/19c7d8ac51988d053709c1e85bd8482076af845d
git.kernel.orghttps://git.kernel.org/stable/c/a1f686d273d129b45712d95f4095843b864466bd
git.kernel.orghttps://git.kernel.org/stable/c/d34f7a8aa9a25b7e64e0e46e444697c0f702374d
git.kernel.orghttps://git.kernel.org/stable/c/1e58ae87ad1e6e24368dea9aec9048c758cd0e2b
git.kernel.orghttps://git.kernel.org/stable/c/e3f000f0dee1bfab52e2e61ca6a3835d9e187e35
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2026-23273

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23273

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References