CVE-2022-2586
Linux Kernel Use-After-Free Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 July 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 10.20% probability · 96th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 26 June 2024 · due 17 July 2024
- Weakness
- CWE-416
- Affected
- siemens/simatic s7-1500 tm mfp firmware · siemens/sinec os · linux/linux kernel · canonical/ubuntu linux
- Source
- security@ubuntu.com
EPSS 10.2% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable. This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://seclists.org/oss-sec/2022/q3/131; https://nvd.nist.gov/vuln/detail/CVE-2022-2586
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586Third Party Advisory
- https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#tMailing List, Patch
- https://ubuntu.com/security/notices/USN-5557-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5560-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5560-2Third Party Advisory
- https://ubuntu.com/security/notices/USN-5562-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5564-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5565-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5566-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5567-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5582-1Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/08/09/5Mailing List
- https://www.zerodayinitiative.com/advisories/ZDI-22-1118/Third Party Advisory, VDB Entry
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586Third Party Advisory
- https://lore.kernel.org/netfilter-devel/20220809170148.164591-1-cascardo@canonical.com/T/#tMailing List, Patch
- https://ubuntu.com/security/notices/USN-5557-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5560-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5560-2Third Party Advisory
- https://ubuntu.com/security/notices/USN-5562-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5564-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5565-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5566-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5567-1Third Party Advisory
- https://ubuntu.com/security/notices/USN-5582-1Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/08/09/5Mailing List
- https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586Exploit, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-22-1118/Third Party Advisory, VDB Entry
- https://cert-portal.siemens.com/productcert/html/ssa-794697.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-806742.htmlThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.