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
- 10.46% probability · 95th percentile
- CISA KEV
- Listed 26 June 2024 · due 17 July 2024
- Weakness
- CWE-416
- Affected
- linux/linux kernel · canonical/ubuntu linux
- Source
- security@ubuntu.com
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://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.