{"id":"CVE-2021-46956","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtiofs: fix memory leak in virtio_fs_probe()\n\nWhen accidentally passing twice the same tag to qemu, kmemleak ended up\nreporting a memory leak in virtiofs.  Also, looking at the log I saw the\nfollowing error (that's when I realised the duplicated tag):\n\n  virtiofs: probe of virtio5 failed with error -17\n\nHere's the kmemleak log for reference:\n\nunreferenced object 0xffff888103d47800 (size 1024):\n  comm \"systemd-udevd\", pid 118, jiffies 4294893780 (age 18.340s)\n  hex dump (first 32 bytes):\n    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........\n    ff ff ff ff ff ff ff ff 80 90 02 a0 ff ff ff ff  ................\n  backtrace:\n    [\u003c000000000ebb87c1\u003e] virtio_fs_probe+0x171/0x7ae [virtiofs]\n    [\u003c00000000f8aca419\u003e] virtio_dev_probe+0x15f/0x210\n    [\u003c000000004d6baf3c\u003e] really_probe+0xea/0x430\n    [\u003c00000000a6ceeac8\u003e] device_driver_attach+0xa8/0xb0\n    [\u003c00000000196f47a7\u003e] __driver_attach+0x98/0x140\n    [\u003c000000000b20601d\u003e] bus_for_each_dev+0x7b/0xc0\n    [\u003c00000000399c7b7f\u003e] bus_add_driver+0x11b/0x1f0\n    [\u003c0000000032b09ba7\u003e] driver_register+0x8f/0xe0\n    [\u003c00000000cdd55998\u003e] 0xffffffffa002c013\n    [\u003c000000000ea196a2\u003e] do_one_initcall+0x64/0x2e0\n    [\u003c0000000008f727ce\u003e] do_init_module+0x5c/0x260\n    [\u003c000000003cdedab6\u003e] __do_sys_finit_module+0xb5/0x120\n    [\u003c00000000ad2f48c6\u003e] do_syscall_64+0x33/0x40\n    [\u003c00000000809526b5\u003e] entry_SYSCALL_64_after_hwframe+0x44/0xae","modified":"2026-03-15T22:42:42.045259Z","published":"2024-02-27T19:04:06.717Z","related":["SUSE-SU-2024:1465-1","SUSE-SU-2024:1489-1"],"references":[{"type":"FIX","url":"https://git.kernel.org/stable/c/5116e79fc6e6725b8acdad8b7e928a83ab7b47e6"},{"type":"FIX","url":"https://git.kernel.org/stable/c/9b9d60c0eb8ada99cce2a9ab5c15dffc523b01ae"},{"type":"FIX","url":"https://git.kernel.org/stable/c/c79c5e0178922a9e092ec8fed026750f39dcaef4"},{"type":"FIX","url":"https://git.kernel.org/stable/c/d19555ff225d0896a33246a49279e6d578095f15"},{"type":"FIX","url":"https://git.kernel.org/stable/c/310efc95c72c13faf855c692d19cd4d054d827c8"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"5.4"},{"fixed":"5.4.118"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.36"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.11.20"}]},{"events":[{"introduced":"5.12"},{"fixed":"5.12.3"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-46956.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"}]}