{"id":"DEBIAN-CVE-2023-53595","details":"In the Linux kernel, the following vulnerability has been resolved:  octeontx2-pf: mcs: Fix NULL pointer dereferences  When system is rebooted after creating macsec interface below NULL pointer dereference crashes occurred. This patch fixes those crashes by using correct order of teardown  [ 3324.406942] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 3324.415726] Mem abort info: [ 3324.418510]   ESR = 0x96000006 [ 3324.421557]   EC = 0x25: DABT (current EL), IL = 32 bits [ 3324.426865]   SET = 0, FnV = 0 [ 3324.429913]   EA = 0, S1PTW = 0 [ 3324.433047] Data abort info: [ 3324.435921]   ISV = 0, ISS = 0x00000006 [ 3324.439748]   CM = 0, WnR = 0 .... [ 3324.575915] Call trace: [ 3324.578353]  cn10k_mdo_del_secy+0x24/0x180 [ 3324.582440]  macsec_common_dellink+0xec/0x120 [ 3324.586788]  macsec_notify+0x17c/0x1c0 [ 3324.590529]  raw_notifier_call_chain+0x50/0x70 [ 3324.594965]  call_netdevice_notifiers_info+0x34/0x7c [ 3324.599921]  rollback_registered_many+0x354/0x5bc [ 3324.604616]  unregister_netdevice_queue+0x88/0x10c [ 3324.609399]  unregister_netdev+0x20/0x30 [ 3324.613313]  otx2_remove+0x8c/0x310 [ 3324.616794]  pci_device_shutdown+0x30/0x70 [ 3324.620882]  device_shutdown+0x11c/0x204  [  966.664930] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [  966.673712] Mem abort info: [  966.676497]   ESR = 0x96000006 [  966.679543]   EC = 0x25: DABT (current EL), IL = 32 bits [  966.684848]   SET = 0, FnV = 0 [  966.687895]   EA = 0, S1PTW = 0 [  966.691028] Data abort info: [  966.693900]   ISV = 0, ISS = 0x00000006 [  966.697729]   CM = 0, WnR = 0 [  966.833467] Call trace: [  966.835904]  cn10k_mdo_stop+0x20/0xa0 [  966.839557]  macsec_dev_stop+0xe8/0x11c [  966.843384]  __dev_close_many+0xbc/0x140 [  966.847298]  dev_close_many+0x84/0x120 [  966.851039]  rollback_registered_many+0x114/0x5bc [  966.855735]  unregister_netdevice_many.part.0+0x14/0xa0 [  966.860952]  unregister_netdevice_many+0x18/0x24 [  966.865560]  macsec_notify+0x1ac/0x1c0 [  966.869303]  raw_notifier_call_chain+0x50/0x70 [  966.873738]  call_netdevice_notifiers_info+0x34/0x7c [  966.878694]  rollback_registered_many+0x354/0x5bc [  966.883390]  unregister_netdevice_queue+0x88/0x10c [  966.888173]  unregister_netdev+0x20/0x30 [  966.892090]  otx2_remove+0x8c/0x310 [  966.895571]  pci_device_shutdown+0x30/0x70 [  966.899660]  device_shutdown+0x11c/0x204 [  966.903574]  __do_sys_reboot+0x208/0x290 [  966.907487]  __arm64_sys_reboot+0x20/0x30 [  966.911489]  el0_svc_handler+0x80/0x1c0 [  966.915316]  el0_svc+0x8/0x180 [  966.918362] Code: f9400000 f9400a64 91220014 f94b3403 (f9400060) [  966.924448] ---[ end trace 341778e799c3d8d7 ]---","modified":"2026-09-15T09:02:46.315343268Z","published":"2025-10-04T16:15:56.030Z","upstream":["CVE-2023-53595"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53595"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.37-1"}]}],"versions":["6.1.27-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53595.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53595.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53595.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"}]}