{"id":"DEBIAN-CVE-2026-31601","details":"In the Linux kernel, the following vulnerability has been resolved:  vfio/xe: Reorganize the init to decouple migration from reset  Attempting to issue reset on VF devices that don't support migration leads to the following:    BUG: unable to handle page fault for address: 00000000000011f8   #PF: supervisor read access in kernel mode   #PF: error_code(0x0000) - not-present page   PGD 0 P4D 0   Oops: Oops: 0000 [#1] SMP NOPTI   CPU: 2 UID: 0 PID: 7443 Comm: xe_sriov_flr Tainted: G S   U              7.0.0-rc1-lgci-xe-xe-4588-cec43d5c2696af219-nodebug+ #1 PREEMPT(lazy)   Tainted: [S]=CPU_OUT_OF_SPEC, [U]=USER   Hardware name: Intel Corporation Alder Lake Client Platform/AlderLake-P DDR4 RVP, BIOS RPLPFWI1.R00.4035.A00.2301200723 01/20/2023   RIP: 0010:xe_sriov_vfio_wait_flr_done+0xc/0x80 [xe]   Code: ff c3 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 41 54 53 \u003c83\u003e bf f8 11 00 00 02 75 61 41 89 f4 85 f6 74 52 48 8b 47 08 48 89   RSP: 0018:ffffc9000f7c39b8 EFLAGS: 00010202   RAX: ffffffffa04d8660 RBX: ffff88813e3e4000 RCX: 0000000000000000   RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000   RBP: ffffc9000f7c39c8 R08: 0000000000000000 R09: 0000000000000000   R10: 0000000000000000 R11: 0000000000000000 R12: ffff888101a48800   R13: ffff88813e3e4150 R14: ffff888130d0d008 R15: ffff88813e3e40d0   FS:  00007877d3d0d940(0000) GS:ffff88890b6d3000(0000) knlGS:0000000000000000   CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033   CR2: 00000000000011f8 CR3: 000000015a762000 CR4: 0000000000f52ef0   PKRU: 55555554   Call Trace:    \u003cTASK\u003e    xe_vfio_pci_reset_done+0x49/0x120 [xe_vfio_pci]    pci_dev_restore+0x3b/0x80    pci_reset_function+0x109/0x140    reset_store+0x5c/0xb0    dev_attr_store+0x17/0x40    sysfs_kf_write+0x72/0x90    kernfs_fop_write_iter+0x161/0x1f0    vfs_write+0x261/0x440    ksys_write+0x69/0xf0    __x64_sys_write+0x19/0x30    x64_sys_call+0x259/0x26e0    do_syscall_64+0xcb/0x1500    ? __fput+0x1a2/0x2d0    ? fput_close_sync+0x3d/0xa0    ? __x64_sys_close+0x3e/0x90    ? x64_sys_call+0x1b7c/0x26e0    ? do_syscall_64+0x109/0x1500    ? __task_pid_nr_ns+0x68/0x100    ? __do_sys_getpid+0x1d/0x30    ? x64_sys_call+0x10b5/0x26e0    ? do_syscall_64+0x109/0x1500    ? putname+0x41/0x90    ? do_faccessat+0x1e8/0x300    ? __x64_sys_access+0x1c/0x30    ? x64_sys_call+0x1822/0x26e0    ? do_syscall_64+0x109/0x1500    ? tick_program_event+0x43/0xa0    ? hrtimer_interrupt+0x126/0x260    ? irqentry_exit+0xb2/0x710    entry_SYSCALL_64_after_hwframe+0x76/0x7e   RIP: 0033:0x7877d5f1c5a4   Code: c7 00 16 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d a5 ea 0e 00 00 74 13 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 54 c3 0f 1f 00 55 48 89 e5 48 83 ec 20 48 89   RSP: 002b:00007fff48e5f908 EFLAGS: 00000202 ORIG_RAX: 0000000000000001   RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007877d5f1c5a4   RDX: 0000000000000001 RSI: 00007877d621b0c9 RDI: 0000000000000009   RBP: 0000000000000001 R08: 00005fb49113b010 R09: 0000000000000007   R10: 0000000000000000 R11: 0000000000000202 R12: 00007877d621b0c9   R13: 0000000000000009 R14: 00007fff48e5fac0 R15: 00007fff48e5fac0    \u003c/TASK\u003e  This is caused by the fact that some of the xe_vfio_pci_core_device members needed for handling reset are only initialized as part of migration init.  Fix the problem by reorganizing the code to decouple VF init from migration init.","modified":"2026-08-27T23:05:55.170269393Z","published":"2026-04-24T15:16:39.090Z","upstream":["CVE-2026-31601"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-31601"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.19.14-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.10-1","6.18.12-1","6.18.12-1~bpo13+1","6.18.13-1","6.18.14-1","6.18.15-1","6.18.15-1~bpo13+1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1","6.19-1~exp1","6.19.10-1","6.19.10-1~bpo13+1","6.19.11-1","6.19.11-1~bpo13+1","6.19.12-1","6.19.13-1","6.19.13-1~bpo13+1","6.19.14-1~bpo13+1","6.19.2-1~exp1","6.19.3-1~exp1","6.19.4-1~exp1","6.19.5-1~exp1","6.19.6-1","6.19.6-2","6.19.6-2~bpo13+1","6.19.8-1","6.19.8-1~bpo13+1","6.19~rc4-1~exp1","6.19~rc5-1~exp1","6.19~rc6-1~exp1","6.19~rc7-1~exp1","6.19~rc8-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-31601.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:N/I:N/A:H"}]}