Confirmed as exploited
CVE-2022-2586
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.
01 / ACTION
Required action
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
02 / AFFECTED SOFTWARE
Affected packages
736 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Linux Kernel contains a use-after-free vulnerability in the nft_object, allowing local attackers to escalate privileges.
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.
05 / REFERENCES
Further evidence
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2586
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/2xxx/CVE-2022-2586.json
- https://lore.kernel.org/netfilter-devel/[email protected]/T/#t
- https://nvd.nist.gov/vuln/detail/CVE-2022-2586
- https://ubuntu.com/security/notices/USN-5557-1
- https://ubuntu.com/security/notices/USN-5560-1
- https://ubuntu.com/security/notices/USN-5560-2
- https://ubuntu.com/security/notices/USN-5562-1
- https://ubuntu.com/security/notices/USN-5564-1
- https://ubuntu.com/security/notices/USN-5565-1
- https://ubuntu.com/security/notices/USN-5566-1
- https://ubuntu.com/security/notices/USN-5567-1
- https://ubuntu.com/security/notices/USN-5582-1
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-2586
- https://www.openwall.com/lists/oss-security/2022/08/09/5
- https://www.vicarius.io/vsociety/posts/use-after-free-vulnerability-linked-chain-between-nft-tables-cve-2022-2586
- https://www.zerodayinitiative.com/advisories/ZDI-22-1118/