01 Record

CVE-2026-23001

macvlan: fix possible UAF in macvlan_forward_source()

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: fix possible UAF in macvlan_forward_source()

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.19% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 8.8% 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 2026-06-17.

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

2026-01-25 14:36Z7 MO AGO

Last updated

2026-08-05 12:20Z1 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

Data version

5.2

Document digest

3f2a830d4eb1630eec6254a91b2c34aeb1861f54f19e0cf2841237f8e7af2c04

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 8133e85b8a3ec9f10d861e0002ec6037256e987e, 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 484919832e2db6ce1e8add92c469e5d459a516b5, 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 232afc74a6dde0fe1830988e5827921f5ec9bb3f, 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 15f6faf36e162532bec5cc05eb3fc622108bf2ed, 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 8518712a2ca952d6da2238c6f0a16b4ae5ea3f13, 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 6dbead9c7677186f22b7981dd085a0feec1f038e, 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 7470a7a63dc162f07c26dbf960e41ee1e248d80e, 3.18—

06 References

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

01 Record index

CVE-2026-23001

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2026-23001

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References