{"id":"AZL-55615","summary":"CVE-2024-53210 affecting package kernel 5.15.200.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct()\n\nPassing MSG_PEEK flag to skb_recv_datagram() increments skb refcount\n(skb-\u003eusers) and iucv_sock_recvmsg() does not decrement skb refcount\nat exit.\nThis results in skb memory leak in skb_queue_purge() and WARN_ON in\niucv_sock_destruct() during socket close. To fix this decrease\nskb refcount by one if MSG_PEEK is set in order to prevent memory\nleak and WARN_ON.\n\nWARNING: CPU: 2 PID: 6292 at net/iucv/af_iucv.c:286 iucv_sock_destruct+0x144/0x1a0 [af_iucv]\nCPU: 2 PID: 6292 Comm: afiucv_test_msg Kdump: loaded Tainted: G        W          6.10.0-rc7 #1\nHardware name: IBM 3931 A01 704 (z/VM 7.3.0)\nCall Trace:\n        [\u003c001587c682c4aa98\u003e] iucv_sock_destruct+0x148/0x1a0 [af_iucv]\n        [\u003c001587c682c4a9d0\u003e] iucv_sock_destruct+0x80/0x1a0 [af_iucv]\n        [\u003c001587c704117a32\u003e] __sk_destruct+0x52/0x550\n        [\u003c001587c704104a54\u003e] __sock_release+0xa4/0x230\n        [\u003c001587c704104c0c\u003e] sock_close+0x2c/0x40\n        [\u003c001587c702c5f5a8\u003e] __fput+0x2e8/0x970\n        [\u003c001587c7024148c4\u003e] task_work_run+0x1c4/0x2c0\n        [\u003c001587c7023b0716\u003e] do_exit+0x996/0x1050\n        [\u003c001587c7023b13aa\u003e] do_group_exit+0x13a/0x360\n        [\u003c001587c7023b1626\u003e] __s390x_sys_exit_group+0x56/0x60\n        [\u003c001587c7022bccca\u003e] do_syscall+0x27a/0x380\n        [\u003c001587c7049a6a0c\u003e] __do_syscall+0x9c/0x160\n        [\u003c001587c7049ce8a8\u003e] system_call+0x70/0x98\n        Last Breaking-Event-Address:\n        [\u003c001587c682c4a9d4\u003e] iucv_sock_destruct+0x84/0x1a0 [af_iucv]","modified":"2026-04-01T05:18:40.469474Z","published":"2024-12-27T14:15:28Z","upstream":["CVE-2024-53210"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53210"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.15.200.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-55615.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:N/I:N/A:H"}]}