{"id":"AZL-59757","summary":"CVE-2025-21981 affecting package kernel for versions less than 5.15.180.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix memory leak in aRFS after reset\n\nFix aRFS (accelerated Receive Flow Steering) structures memory leak by\nadding a checker to verify if aRFS memory is already allocated while\nconfiguring VSI. aRFS objects are allocated in two cases:\n- as part of VSI initialization (at probe), and\n- as part of reset handling\n\nHowever, VSI reconfiguration executed during reset involves memory\nallocation one more time, without prior releasing already allocated\nresources. This led to the memory leak with the following signature:\n\n[root@os-delivery ~]# cat /sys/kernel/debug/kmemleak\nunreferenced object 0xff3c1ca7252e6000 (size 8192):\n  comm \"kworker/0:0\", pid 8, jiffies 4296833052\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace (crc 0):\n    [\u003cffffffff991ec485\u003e] __kmalloc_cache_noprof+0x275/0x340\n    [\u003cffffffffc0a6e06a\u003e] ice_init_arfs+0x3a/0xe0 [ice]\n    [\u003cffffffffc09f1027\u003e] ice_vsi_cfg_def+0x607/0x850 [ice]\n    [\u003cffffffffc09f244b\u003e] ice_vsi_setup+0x5b/0x130 [ice]\n    [\u003cffffffffc09c2131\u003e] ice_init+0x1c1/0x460 [ice]\n    [\u003cffffffffc09c64af\u003e] ice_probe+0x2af/0x520 [ice]\n    [\u003cffffffff994fbcd3\u003e] local_pci_probe+0x43/0xa0\n    [\u003cffffffff98f07103\u003e] work_for_cpu_fn+0x13/0x20\n    [\u003cffffffff98f0b6d9\u003e] process_one_work+0x179/0x390\n    [\u003cffffffff98f0c1e9\u003e] worker_thread+0x239/0x340\n    [\u003cffffffff98f14abc\u003e] kthread+0xcc/0x100\n    [\u003cffffffff98e45a6d\u003e] ret_from_fork+0x2d/0x50\n    [\u003cffffffff98e083ba\u003e] ret_from_fork_asm+0x1a/0x30\n    ...","modified":"2026-04-01T05:19:32.581465Z","published":"2025-04-01T16:15:29Z","upstream":["CVE-2025-21981"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21981"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.180.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-59757.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"}]}