{"id":"DEBIAN-CVE-2022-50064","details":"In the Linux kernel, the following vulnerability has been resolved:  virtio-blk: Avoid use-after-free on suspend/resume  hctx-\u003euser_data is set to vq in virtblk_init_hctx().  However, vq is freed on suspend and reallocated on resume.  So, hctx-\u003euser_data is invalid after resume, and it will cause use-after-free accessing which will result in the kernel crash something like below:  [   22.428391] Call Trace: [   22.428899]  \u003cTASK\u003e [   22.429339]  virtqueue_add_split+0x3eb/0x620 [   22.430035]  ? __blk_mq_alloc_requests+0x17f/0x2d0 [   22.430789]  ? kvm_clock_get_cycles+0x14/0x30 [   22.431496]  virtqueue_add_sgs+0xad/0xd0 [   22.432108]  virtblk_add_req+0xe8/0x150 [   22.432692]  virtio_queue_rqs+0xeb/0x210 [   22.433330]  blk_mq_flush_plug_list+0x1b8/0x280 [   22.434059]  __blk_flush_plug+0xe1/0x140 [   22.434853]  blk_finish_plug+0x20/0x40 [   22.435512]  read_pages+0x20a/0x2e0 [   22.436063]  ? folio_add_lru+0x62/0xa0 [   22.436652]  page_cache_ra_unbounded+0x112/0x160 [   22.437365]  filemap_get_pages+0xe1/0x5b0 [   22.437964]  ? context_to_sid+0x70/0x100 [   22.438580]  ? sidtab_context_to_sid+0x32/0x400 [   22.439979]  filemap_read+0xcd/0x3d0 [   22.440917]  xfs_file_buffered_read+0x4a/0xc0 [   22.441984]  xfs_file_read_iter+0x65/0xd0 [   22.442970]  __kernel_read+0x160/0x2e0 [   22.443921]  bprm_execve+0x21b/0x640 [   22.444809]  do_execveat_common.isra.0+0x1a8/0x220 [   22.446008]  __x64_sys_execve+0x2d/0x40 [   22.446920]  do_syscall_64+0x37/0x90 [   22.447773]  entry_SYSCALL_64_after_hwframe+0x63/0xcd  This patch fixes this issue by getting vq from vblk, and removes virtblk_init_hctx().","modified":"2026-09-01T20:04:57.484610623Z","published":"2025-06-18T11:15:35.157Z","upstream":["CVE-2022-50064"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50064"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50064.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50064.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50064.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}