01 Record

CVE-2025-21763

neighbour: use RCU protection in __neigh_notify()

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

neighbour: use RCU protection in __neigh_notify()

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.1% 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

2025-02-27 02:18Z1 YR AGO

Last updated

2026-08-05 11:54Z1 MO AGO

Reserved

2024-12-29

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

aa32d4523ed76cc0da14b57973d3d5e9cac8b03333701f61cacab46e523c54a5

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux426b5303eb435d98b9bee37a807be386bc2b3320 to < e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32, 426b5303eb435d98b9bee37a807be386bc2b3320 to < 8666e9aab801328c1408a19fbf4070609dc0695a, 426b5303eb435d98b9bee37a807be386bc2b3320 to < 40d8f2f2a373b6c294ffac394d2bb814b572ead1, 426b5303eb435d98b9bee37a807be386bc2b3320 to < 784eb2376270e086f7db136d154b8404edacf97b, 426b5303eb435d98b9bee37a807be386bc2b3320 to < 1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379, 426b5303eb435d98b9bee37a807be386bc2b3320 to < cdd5c2a12ddad8a77ce1838ff9f29aa587de82df, 426b5303eb435d98b9bee37a807be386bc2b3320 to < 559307d25235e24b5424778c7332451b6c741159, 426b5303eb435d98b9bee37a807be386bc2b3320 to < becbd5850c03ed33b232083dd66c6e38c0c0e569, 2.6.25—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/e1aed6be381bcd7f46d4ca9d7ef0f5f3d6a1be32
git.kernel.orghttps://git.kernel.org/stable/c/8666e9aab801328c1408a19fbf4070609dc0695a
git.kernel.orghttps://git.kernel.org/stable/c/40d8f2f2a373b6c294ffac394d2bb814b572ead1
git.kernel.orghttps://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b
git.kernel.orghttps://git.kernel.org/stable/c/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379
git.kernel.orghttps://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df
git.kernel.orghttps://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159
git.kernel.orghttps://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-265688.html

01 Record index

CVE-2025-21763

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-21763

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References