01 Record

CVE-2025-21700

net: sched: Disallow replacing of child qdisc from one parent to another

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

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02 Description

net: sched: Disallow replacing of child qdisc from one parent to another

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

0.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 13.9% 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 2026-10-15.

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

2025-02-13 11:30Z1 YR AGO

Last updated

2026-10-15 01:03Z14 DAYS 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

c59eec50eca2e8d638fb18f8c33e2a2c4757b019540fd8ce0992a67bb3d32af5

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < cd796e269123e1994bfc4e99dd76680ba0946a97, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < fe18c21d67dc7d1bcce1bba56515b1b0306db19b, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 38646749d6e12f9d80a08d21ca39f0beca20230d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < deda09c0543a66fa51554abc5ffd723d99b191bf, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7e2bd8c13b07e29a247c023c7444df23f9a79fd8, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 73c7e1d6898ccbeee126194dcc05f58b8a795e70, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 46c59ec33ec98aba20c15117630cae43a01404cc, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < bc50835e83f60f56e9bec2b392fb5544f250fb6f, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/cd796e269123e1994bfc4e99dd76680ba0946a97
git.kernel.orghttps://git.kernel.org/stable/c/fe18c21d67dc7d1bcce1bba56515b1b0306db19b
git.kernel.orghttps://git.kernel.org/stable/c/38646749d6e12f9d80a08d21ca39f0beca20230d
git.kernel.orghttps://git.kernel.org/stable/c/deda09c0543a66fa51554abc5ffd723d99b191bf
git.kernel.orghttps://git.kernel.org/stable/c/7e2bd8c13b07e29a247c023c7444df23f9a79fd8
git.kernel.orghttps://git.kernel.org/stable/c/73c7e1d6898ccbeee126194dcc05f58b8a795e70
git.kernel.orghttps://git.kernel.org/stable/c/46c59ec33ec98aba20c15117630cae43a01404cc
git.kernel.orghttps://git.kernel.org/stable/c/bc50835e83f60f56e9bec2b392fb5544f250fb6f
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-784472.html

07 Fixed in

Debian 12

linux
Fixed in 6.1.129-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.12.13-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.