{"id":"AZL-28675","summary":"CVE-2023-4015 affecting package kernel for versions less than 5.15.131.1-2","details":"A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.\n\nOn an error when building a nftables rule, deactivating immediate expressions in nft_immediate_deactivate() can lead unbinding the chain and objects be deactivated but later used.\n\nWe recommend upgrading past commit 0a771f7b266b02d262900c75f1e175c7fe76fec2.","modified":"2026-04-01T05:09:47.572461Z","published":"2023-09-06T14:15:11Z","upstream":["CVE-2023-4015"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4015"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.131.1-2"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-28675.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}