{"id":"CVE-2022-49329","summary":"vduse: Fix NULL pointer dereference on sysfs access","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvduse: Fix NULL pointer dereference on sysfs access\n\nThe control device has no drvdata. So we will get a\nNULL pointer dereference when accessing control\ndevice's msg_timeout attribute via sysfs:\n\n[ 132.841881][ T3644] BUG: kernel NULL pointer dereference, address: 00000000000000f8\n[ 132.850619][ T3644] RIP: 0010:msg_timeout_show (drivers/vdpa/vdpa_user/vduse_dev.c:1271)\n[ 132.869447][ T3644] dev_attr_show (drivers/base/core.c:2094)\n[ 132.870215][ T3644] sysfs_kf_seq_show (fs/sysfs/file.c:59)\n[ 132.871164][ T3644] ? device_remove_bin_file (drivers/base/core.c:2088)\n[ 132.872082][ T3644] kernfs_seq_show (fs/kernfs/file.c:164)\n[ 132.872838][ T3644] seq_read_iter (fs/seq_file.c:230)\n[ 132.873578][ T3644] ? __vmalloc_area_node (mm/vmalloc.c:3041)\n[ 132.874532][ T3644] kernfs_fop_read_iter (fs/kernfs/file.c:238)\n[ 132.875513][ T3644] __kernel_read (fs/read_write.c:440 (discriminator 1))\n[ 132.876319][ T3644] kernel_read (fs/read_write.c:459)\n[ 132.877129][ T3644] kernel_read_file (fs/kernel_read_file.c:94)\n[ 132.877978][ T3644] kernel_read_file_from_fd (include/linux/file.h:45 fs/kernel_read_file.c:186)\n[ 132.879019][ T3644] __do_sys_finit_module (kernel/module.c:4207)\n[ 132.879930][ T3644] __ia32_sys_finit_module (kernel/module.c:4189)\n[ 132.880930][ T3644] do_int80_syscall_32 (arch/x86/entry/common.c:112 arch/x86/entry/common.c:132)\n[ 132.881847][ T3644] entry_INT80_compat (arch/x86/entry/entry_64_compat.S:419)\n\nTo fix it, don't create the unneeded attribute for\ncontrol device anymore.","modified":"2026-04-02T08:27:29.975255Z","published":"2025-02-26T02:10:50.073Z","related":["SUSE-SU-2025:1176-1","SUSE-SU-2025:1241-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49329.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/30fd1b56621e187346f65d01fe34870634b15188"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3a7a81f4835dfda11f39fdd27586da14331896eb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b22fdee17ec62604060fb0fda5e1414b634666e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b27ee76c74dc831d6e092eaebc2dfc9c0beed1c9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49329.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49329"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c8a6153b6c59d95c0e091f053f6f180952ade91e"},{"fixed":"3a7a81f4835dfda11f39fdd27586da14331896eb"},{"fixed":"30fd1b56621e187346f65d01fe34870634b15188"},{"fixed":"b22fdee17ec62604060fb0fda5e1414b634666e1"},{"fixed":"b27ee76c74dc831d6e092eaebc2dfc9c0beed1c9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49329.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"}]}