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Vulnerability record · CVE-2022-2588 · published 8 January 2024

CVE-2022-2588: Linux kernel use after free vulnerability

Linux · Linux Kernel

It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.

7.8 CVSS 3.1 High EPSS 5.9% · top 7.0% CWE-416 · Use after freeCWE-415 · Double free
7.8CVSS 3.1 base score
5.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
30References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2588 Third Party Advisory
https://github.com/Markakd/CVE-2022-2588 Exploit
https://lore.kernel.org/netdev/[email protected]/T/#u Mailing ListPatch
https://ubuntu.com/security/notices/USN-5557-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-2 Third Party Advisory
https://ubuntu.com/security/notices/USN-5562-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5564-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5565-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5566-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5567-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5582-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5588-1 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/08/09/6 Mailing List
https://www.zerodayinitiative.com/advisories/ZDI-22-1117/ Third Party AdvisoryVDB Entry
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2588 Third Party Advisory
https://github.com/Markakd/CVE-2022-2588 Exploit
https://lore.kernel.org/netdev/[email protected]/T/#u Mailing ListPatch
https://ubuntu.com/security/notices/USN-5557-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5560-2 Third Party Advisory
https://ubuntu.com/security/notices/USN-5562-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5564-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5565-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5566-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5567-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5582-1 Third Party Advisory
https://ubuntu.com/security/notices/USN-5588-1 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/08/09/6 Mailing List
https://www.zerodayinitiative.com/advisories/ZDI-22-1117/ Third Party AdvisoryVDB Entry

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2022-2588), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.