CVE-2025-37789: net: openvswitch: fix nested key length validation in the set() action
Vulnerability summary
CVE-2025-37789 is a high (CVSS 7.8) vulnerability in debian debian_linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 13% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 57 · Related 47Timeline
- 01-05-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix nested key length validation in the set() action It's not safe to access nla_len(ovs_key) if the data is smaller than the netlink header. Check that the attribute is OK first.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.22% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu138 products
- linuxAll versions (No fix recorded) | < 5.15.0-144.157 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1088.95 | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.135-1 | < 6.12.25-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < 54c6957d1123a2032099b9eab51c314800f677ce | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < 7fcaec0b2ab8fa5fbf0b45e5512364a168f445bd | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < a27526e6b48eee9e2d82efff502c4f272f1a91d4 | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < 1489c195c8eecd262aa6712761ba5288203e28ec | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < 824a7c2df5127b2402b68a21a265d413e78dcad7 | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < be80768d4f3b6fd13f421451cc3fee8778aba8bc | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < 03d7262dd53e8c404da35cc81aaa887fd901f76b | ≥ ccb1352e76cff0524e7ccb2074826a092dd13016, < 65d91192aa66f05710cfddf6a14b5a25ee554dba | 3.3
- linux_kernel≥ 3.3, < 5.4.293 | ≥ 5.5, < 5.10.237 | ≥ 5.11, < 5.15.181 | ≥ 5.16, < 6.1.135 | ≥ 6.2, < 6.6.88 | ≥ 6.7, < 6.12.25 | ≥ 6.13, < 6.14.4 | 6.15:rc1 | 6.15:rc2
3 vendors · 142 products
