{"id":"AZL-57534","summary":"CVE-2025-21635 affecting package kernel 6.6.126.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nrds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current-\u003ensproxy\n\nAs mentioned in a previous commit of this series, using the 'net'\nstructure via 'current' is not recommended for different reasons:\n\n- Inconsistency: getting info from the reader's/writer's netns vs only\n  from the opener's netns.\n\n- current-\u003ensproxy can be NULL in some cases, resulting in an 'Oops'\n  (null-ptr-deref), e.g. when the current task is exiting, as spotted by\n  syzbot [1] using acct(2).\n\nThe per-netns structure can be obtained from the table-\u003edata using\ncontainer_of(), then the 'net' one can be retrieved from the listen\nsocket (if available).","modified":"2026-04-01T05:19:09.793178Z","published":"2025-01-19T11:15:09Z","upstream":["CVE-2025-21635"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21635"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.126.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-57534.json"}}],"schema_version":"1.7.5"}