CVE-2022-2586
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Linux Kernel Use-After-Free Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Description
It was discovered that a nft object or expression could reference a nft set on a different nft table, leading to a use-after-free once that table was deleted.
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 10% (percentile: 96) as of 2 November 2026
- CWE
- CWE-416
Affected products
siemens: simatic s7-1500 tm mfp firmware; siemens: simatic s7-1500 tm mfp; siemens: sinec os; siemens: scalance xch328; siemens: scalance xcm324; siemens: scalance xcm328; siemens: scalance xcm332; siemens: scalance xrh334; siemens: scalance xrm334; linux: linux kernel; canonical: ubuntu linux
References
- https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canoni… Mailing ListPatch
- https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canoni… Mailing ListPatch
- https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chai… ExploitThird Party Advisory
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586 Third Party Advisory
- 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