01 Record

CVE-2024-40920

net: bridge: mst: fix suspicious rcu usage in br_mst_set_state

HighPUBLISHEDCNA: Linux

CNA base score7.1 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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02 Description

net: bridge: mst: fix suspicious rcu usage in br_mst_set_state

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 ImpactpartialSuccessful exploitation gives limited 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

0.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 34.7% 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 2026-08-04.

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

2024-07-12 12:25Z2 YR AGO

Last updated

2026-08-05 11:34Z1 MO AGO

Reserved

2024-07-12

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

06961d751d99ce7f8c748c41277ff8dc7900beef76902e420b01acef13be2676

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux8ca9a750fc711911ef616ceb627d07357b04545e to < caaa2129784a04dcade0ea92c12e6ff90bbd23d8, 4488617e5e995a09abe4d81add5fb165674edb59 to < 7caefa2771722e65496d85b62e1dc4442b7d1345, e43dd2b1ec746e105b7db5f9ad6ef14685a615a4 to < 406bfc04b01ee47e4c626f77ecc7d9f85135b166, 3a7c1661ae1383364cd6092d851f5e5da64d476b to < 546ceb1dfdac866648ec959cbc71d9525bd73462, a2b01e65d9ba8af2bb086d3b7288ca53a07249ac, 6.8.12 to < 6.9, 6.1.93 to < 6.1.95, 6.6.33 to < 6.6.35, 6.9.3 to < 6.9.6—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/caaa2129784a04dcade0ea92c12e6ff90bbd23d8
git.kernel.orghttps://git.kernel.org/stable/c/7caefa2771722e65496d85b62e1dc4442b7d1345
git.kernel.orghttps://git.kernel.org/stable/c/406bfc04b01ee47e4c626f77ecc7d9f85135b166
git.kernel.orghttps://git.kernel.org/stable/c/546ceb1dfdac866648ec959cbc71d9525bd73462
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

01 Record index

CVE-2024-40920

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2024-40920

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References