{"id":"DEBIAN-CVE-2023-52808","details":"In the Linux kernel, the following vulnerability has been resolved:  scsi: hisi_sas: Set debugfs_dir pointer to NULL after removing debugfs  If init debugfs failed during device registration due to memory allocation failure, debugfs_remove_recursive() is called, after which debugfs_dir is not set to NULL. debugfs_remove_recursive() will be called again during device removal. As a result, illegal pointer is accessed.  [ 1665.467244] hisi_sas_v3_hw 0000:b4:02.0: failed to init debugfs! ... [ 1669.836708] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000a0 [ 1669.872669] pc : down_write+0x24/0x70 [ 1669.876315] lr : down_write+0x1c/0x70 [ 1669.879961] sp : ffff000036f53a30 [ 1669.883260] x29: ffff000036f53a30 x28: ffffa027c31549f8 [ 1669.888547] x27: ffffa027c3140000 x26: 0000000000000000 [ 1669.893834] x25: ffffa027bf37c270 x24: ffffa027bf37c270 [ 1669.899122] x23: ffff0000095406b8 x22: ffff0000095406a8 [ 1669.904408] x21: 0000000000000000 x20: ffffa027bf37c310 [ 1669.909695] x19: 00000000000000a0 x18: ffff8027dcd86f10 [ 1669.914982] x17: 0000000000000000 x16: 0000000000000000 [ 1669.920268] x15: 0000000000000000 x14: ffffa0274014f870 [ 1669.925555] x13: 0000000000000040 x12: 0000000000000228 [ 1669.930842] x11: 0000000000000020 x10: 0000000000000bb0 [ 1669.936129] x9 : ffff000036f537f0 x8 : ffff80273088ca10 [ 1669.941416] x7 : 000000000000001d x6 : 00000000ffffffff [ 1669.946702] x5 : ffff000008a36310 x4 : ffff80273088be00 [ 1669.951989] x3 : ffff000009513e90 x2 : 0000000000000000 [ 1669.957276] x1 : 00000000000000a0 x0 : ffffffff00000001 [ 1669.962563] Call trace: [ 1669.965000]  down_write+0x24/0x70 [ 1669.968301]  debugfs_remove_recursive+0x5c/0x1b0 [ 1669.972905]  hisi_sas_debugfs_exit+0x24/0x30 [hisi_sas_main] [ 1669.978541]  hisi_sas_v3_remove+0x130/0x150 [hisi_sas_v3_hw] [ 1669.984175]  pci_device_remove+0x48/0xd8 [ 1669.988082]  device_release_driver_internal+0x1b4/0x250 [ 1669.993282]  device_release_driver+0x28/0x38 [ 1669.997534]  pci_stop_bus_device+0x84/0xb8 [ 1670.001611]  pci_stop_and_remove_bus_device_locked+0x24/0x40 [ 1670.007244]  remove_store+0xfc/0x140 [ 1670.010802]  dev_attr_store+0x44/0x60 [ 1670.014448]  sysfs_kf_write+0x58/0x80 [ 1670.018095]  kernfs_fop_write+0xe8/0x1f0 [ 1670.022000]  __vfs_write+0x60/0x190 [ 1670.025472]  vfs_write+0xac/0x1c0 [ 1670.028771]  ksys_write+0x6c/0xd8 [ 1670.032071]  __arm64_sys_write+0x24/0x30 [ 1670.035977]  el0_svc_common+0x78/0x130 [ 1670.039710]  el0_svc_handler+0x38/0x78 [ 1670.043442]  el0_svc+0x8/0xc  To fix this, set debugfs_dir to NULL after debugfs_remove_recursive().","modified":"2026-09-15T09:02:48.962966925Z","published":"2024-05-21T16:15:19.113Z","upstream":["CVE-2023-52808"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-52808"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.64-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52808.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.13-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52808.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5.13-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52808.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"}]}