{"id":"DEBIAN-CVE-2023-53250","details":"In the Linux kernel, the following vulnerability has been resolved:  firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle  KASAN reported a null-ptr-deref error:  KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 1373 Comm: modprobe Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:dmi_sysfs_entry_release ... Call Trace:  \u003cTASK\u003e  kobject_put  dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs  dmi_decode_table (drivers/firmware/dmi_scan.c:133)  dmi_walk (drivers/firmware/dmi_scan.c:1115)  dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs  do_one_initcall (init/main.c:1296)  ... Kernel panic - not syncing: Fatal exception Kernel Offset: 0x4000000 from 0xffffffff81000000 ---[ end Kernel panic - not syncing: Fatal exception ]---  It is because previous patch added kobject_put() to release the memory which will call  dmi_sysfs_entry_release() and list_del().  However, list_add_tail(entry-\u003elist) is called after the error block, so the list_head is uninitialized and cannot be deleted.  Move error handling to after list_add_tail to fix this.","modified":"2026-09-15T09:02:51.002156976Z","published":"2025-09-15T15:15:52.280Z","upstream":["CVE-2023-53250"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53250"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53250.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53250.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53250.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"}]}