High 8.8Published Feb 4, 2026

CVE-2026-23098netrom: fix double-free in nr_route_frame()

Updated under an hour ago (Oct 27, 2026, 3:50 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: netrom: fix double-free in nr_route_frame() In nr_route_frame(), old_skb is immediately freed without checking if nr_neigh->ax25 pointer is NULL. Therefore, if nr_neigh->ax25 is NULL, the caller function will free old_skb again, causing a double-free bug. Therefore, to prevent this, we need to modify it to check whether nr_neigh->ax25 is NULL before freeing old_skb.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 25aab6bfc31017a7e52035b99aef5c2b6bde8ffb; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6e0110ea90313b7c0558a0b77038274a6821caf8; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 7c48fdf2d1349bb54815b56fb012b9d577707708; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before bd8955337e3764f912f49b360e176d8aaecf7016; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9f5fa78d9980fe75a69835521627ab7943cb3d67; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ba1096c315283ee3292765f6aea4cca15816c4f7	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.12.1 before 5.10.249; from 5.11 before 5.15.199; from 5.16 before 6.1.162; from 6.2 before 6.6.122; from 6.7 before 6.12.68; from 6.13 before 6.18.8; 2.6.12; 2.6.12; and 9 more ranges	NVD

References

References

https://git.kernel.org/stable/c/25aab6bfc31017a7e52035b99aef5c2b6bde8ffb	patch
https://git.kernel.org/stable/c/6e0110ea90313b7c0558a0b77038274a6821caf8	patch
https://git.kernel.org/stable/c/7c48fdf2d1349bb54815b56fb012b9d577707708	patch
https://git.kernel.org/stable/c/bd8955337e3764f912f49b360e176d8aaecf7016	patch
https://git.kernel.org/stable/c/94d1a8bd08af1f4cc345c5c29f5db1ea72b8bb8c	patch
https://git.kernel.org/stable/c/9f5fa78d9980fe75a69835521627ab7943cb3d67	patch
https://git.kernel.org/stable/c/ba1096c315283ee3292765f6aea4cca15816c4f7	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.