CVE-2023-53673

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-10-07. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2025-31967 (ENISA EUVD) · GHSA-7v48-2x62-5ff3 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_event: call disconnect callback before deleting conn

In hci_cs_disconnect, we do hci_conn_del even if disconnection failed.

ISO, L2CAP and SCO connections refer to the hci_conn without hci_conn_get, so disconn_cfm must be called so they can clean up their conn, otherwise use-after-free occurs.

ISO: ========================================================== iso_sock_connect:880: sk 00000000eabd6557 iso_connect_cis:356: 70:1a:b8:98:ff:a2 -> 28:3d:c2:4a:7e:da ... iso_conn_add:140: hcon 000000001696f1fd conn 00000000b6251073 hci_dev_put:1487: hci0 orig refcnt 17 __iso_chan_add:214: conn 00000000b6251073 iso_sock_clear_timer:117: sock 00000000eabd6557 state 3 ... hci_rx_work:4085: hci0 Event packet hci_event_packet:7601: hci0: event 0x0f hci_cmd_status_evt:4346: hci0: opcode 0x0406 hci_cs_disconnect:2760: hci0: status 0x0c hci_sent_cmd_data:3107: hci0 opcode 0x0406 hci_conn_del:1151: hci0 hcon 000000001696f1fd handle 2560 hci_conn_unlink:1102: hci0: hcon 000000001696f1fd hci_conn_drop:1451: hcon 00000000d8521aaf orig refcnt 2 hci_chan_list_flush:2780: hcon 000000001696f1fd hci_dev_put:1487: hci0 orig refcnt 21 hci_dev_put:1487: hci0 orig refcnt 20 hci_req_cmd_complete:3978: opcode 0x0406 status 0x0c ... ... iso_sock_sendmsg:1098: sock 00000000dea5e2e0, sk 00000000eabd6557 BUG: kernel NULL pointer dereference, address: 0000000000000668 PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-1.fc38 04/01/2014 RIP: 0010:iso_sock_sendmsg (net/bluetooth/iso.c:1112) bluetooth ==========================================================

L2CAP: ================================================================== hci_cmd_status_evt:4359: hci0: opcode 0x0406 hci_cs_disconnect:2760: hci0: status 0x0c hci_sent_cmd_data:3085: hci0 opcode 0x0406 hci_conn_del:1151: hci0 hcon ffff88800c999000 handle 3585 hci_conn_unlink:1102: hci0: hcon ffff88800c999000 hci_chan_list_flush:2780: hcon ffff88800c999000 hci_chan_del:2761: hci0 hcon ffff88800c999000 chan ffff888018ddd280 ... BUG: KASAN: slab-use-after-free in hci_send_acl+0x2d/0x540 [bluetooth] Read of size 8 at addr ffff888018ddd298 by task bluetoothd/1175

CPU: 0 PID: 1175 Comm: bluetoothd Tainted: G E 6.4.0-rc4+ #2 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-1.fc38 04/01/2014 Call Trace: dump_stack_lvl+0x5b/0x90 print_report+0xcf/0x670 ? __virt_addr_valid+0xf8/0x180 ? hci_send_acl+0x2d/0x540 [bluetooth] kasan_report+0xa8/0xe0 ? hci_send_acl+0x2d/0x540 [bluetooth] hci_send_acl+0x2d/0x540 [bluetooth] ? __pfx___lock_acquire+0x10/0x10 l2cap_chan_send+0x1fd/0x1300 [bluetooth] ? l2cap_sock_sendmsg+0xf2/0x170 [bluetooth] ? __pfx_l2cap_chan_send+0x10/0x10 [bluetooth] ? lock_release+0x1d5/0x3c0 ? mark_held_locks+0x1a/0x90 l2cap_sock_sendmsg+0x100/0x170 [bluetooth] sock_write_iter+0x275/0x280 ? __pfx_sock_write_iter+0x10/0x10 ? __pfx___lock_acquire+0x10/0x10 do_iter_readv_writev+0x176/0x220 ? __pfx_do_iter_readv_writev+0x10/0x10 ? find_held_lock+0x83/0xa0 ? selinux_file_permission+0x13e/0x210 do_iter_write+0xda/0x340 vfs_writev+0x1b4/0x400 ? __pfx_vfs_writev+0x10/0x10 ? __seccomp_filter+0x112/0x750 ? populate_seccomp_data+0x182/0x220 ? __fget_light+0xdf/0x100 ? do_writev+0x19d/0x210 do_writev+0x19d/0x210 ? __pfx_do_writev+0x10/0x10 ? mark_held_locks+0x1a/0x90 do_syscall_64+0x60/0x90 ? lockdep_hardirqs_on_prepare+0x149/0x210 ? do_syscall_64+0x6c/0x90 ? lockdep_hardirqs_on_prepare+0x149/0x210 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7ff45cb23e64 Code: 15 d1 1f 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 80 3d 9d a7 0d 00 00 74 13 b8 14 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 48 83 ec 28 89 54 24 1c 48 89 RSP: 002b:00007fff21ae09b8 EFLAGS: 00000202 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: ---truncated---

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
16th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

October 7, 2025

Last Modified

August 5, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available.
Web page

Bluetooth: hci_event: call disconnect callback before deleting conn - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7f7cfcb6f0825652973b780f248603e23f16ee90
Web page

Bluetooth: hci_event: call disconnect callback before deleting conn - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/59bd1e476bbc7bc6dff3c61bba787095a4839796
Web page

Bluetooth: hci_event: call disconnect callback before deleting conn - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1ecf6dc2676ead4b927c50b1be0851fa4d756574
Web page

Bluetooth: hci_event: call disconnect callback before deleting conn - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/093a07052406b363b1b2ab489e17dbadaf3e509b

Vendor Advisories for CVE-2023-53673(10)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(17)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.185.195~20.04.1) @ focal2026-10-27ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1108.114~20.04.1) @ focal2026-10-27ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1105.103) @ jammy2026-10-27ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1074 (5.15.0-1074.78) @ jammy2026-10-27ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1106.112~20.04.1) @ focal2026-10-27ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1116.101) @ jammy2026-10-27ubuntu
redhatkernel-0:4.18.0-305.186.1.el8_42026-02-25redhat
redhatkernel-0:5.14.0-70.165.1.el9_02026-02-11redhat
redhatkernel-0:5.14.0-284.156.1.el9_22026-02-11redhat
redhatkernel-rt-0:5.14.0-284.156.1.rt14.441.el9_22026-02-11redhat
redhatkernel-0:4.18.0-372.179.1.el8_62026-02-11redhat
redhatkernel-rt-0:5.14.0-70.165.1.rt21.237.el9_02026-02-11redhat
redhatkernel-0:4.18.0-477.128.1.el8_82026-02-11redhat
redhatkernel-0:4.18.0-553.97.1.el8_102026-01-26redhat
redhatkernel-rt-0:4.18.0-553.97.1.rt7.438.el8_102026-01-26redhat
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
linuxKernel @ 5.15.200 (fixes >=5.7.0)—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (498 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.27-1 ... 6.1.38-4~bpo11+1 (8 versions)
  • every version up to 6.1.52-1: fixed in 6.1.52-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.4.11-1: fixed in 6.4.11-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux—
  • every version up to 6.4.11-1: fixed in 6.4.11-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 39× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 222 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 129 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  2. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  3. 2026-10-30 16:31 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  4. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  5. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  6. 2026-10-27 21:29 UTCEG score recompute
  7. 2026-10-27 21:29 UTCVendor advisory
  8. 2026-10-27 21:29 UTCGHSA enrichmentGHSA-7v48-2x62-5ff3 · GitHub severity HIGH · GitHub CVSS 7.8
  9. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.2% · 16th percentile
  10. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  11. 2026-10-25 17:27 UTCEG score recompute
  12. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  13. 2026-10-24 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-20 21:14 UTCEG score recompute
  17. 2026-10-20 21:14 UTCVendor advisory
  18. 2026-10-20 21:14 UTCGHSA enrichmentGHSA-7v48-2x62-5ff3 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-10-19 14:25 UTCOSV refresh
  22. 2026-10-18 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  23. 2026-10-18 07:40 UTCEG score recompute
  24. 2026-10-17 16:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  25. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.2% · 14th percentile
Show 68 more
  1. 2026-10-15 16:29 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  2. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  3. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  4. 2026-10-12 18:12 UTCEG score recompute
  5. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  6. 2026-10-11 21:37 UTCEG score recompute
  7. 2026-10-11 13:45 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  8. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  9. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  10. 2026-10-08 17:06 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  11. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  12. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  13. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  14. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  15. 2026-10-03 14:23 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  16. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  17. 2026-09-30 16:37 UTCEG score recompute
  18. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  19. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  20. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  21. 2026-09-26 20:42 UTCOSV refresh
  22. 2026-09-26 00:22 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  23. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  25. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  26. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  27. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  28. 2026-09-16 05:11 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  29. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  30. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  31. 2026-09-12 14:58 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  32. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  33. 2026-09-11 09:34 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  34. 2026-09-08 21:58 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  35. 2026-09-07 15:59 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  36. 2026-09-07 06:18 UTCOSV refresh
  37. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  38. 2026-09-05 15:26 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  39. 2026-09-04 13:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  40. 2026-09-04 05:04 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  41. 2026-09-02 14:10 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  42. 2026-09-01 13:52 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  43. 2026-09-01 04:36 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  44. 2026-08-30 19:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  45. 2026-08-30 01:20 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  46. 2026-08-28 21:39 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  47. 2026-08-27 14:23 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  48. 2026-08-26 14:44 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  49. 2026-08-25 13:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  50. 2026-08-23 00:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  51. 2026-08-21 23:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  52. 2026-08-20 22:53 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  53. 2026-08-20 16:01 UTCOSV refresh
  54. 2026-08-19 17:02 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  55. 2026-08-16 14:54 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  56. 2026-08-16 02:12 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  57. 2026-08-15 01:28 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  58. 2026-08-13 21:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  59. 2026-08-12 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  60. 2026-08-11 13:40 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  61. 2026-08-10 23:58 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  62. 2026-08-09 13:44 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  63. 2026-08-08 16:35 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  64. 2026-08-07 16:25 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  65. 2026-08-06 13:45 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  66. 2026-08-05 19:15 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  67. 2026-08-05 10:16 UTCEG score recompute
  68. 2026-08-05 10:16 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-53673?
CVE-2023-53673 is a high-severity vulnerability; its CVE record was published on October 7, 2025. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: call disconnect callback before deleting conn In hci_cs_disconnect, we do hci_conn_del even if disconnection failed. ISO, L2CAP and SCO connections refer to the hci_conn without hci_conn_get, so disconn_cfm…
When was the CVE record for CVE-2023-53673 published?
The CVE record for CVE-2023-53673 was published on October 7, 2025. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 5, 2026; the record at its source may have been updated since.
Is CVE-2023-53673 actively exploited?
CVE-2023-53673 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-53673?
CVE-2023-53673 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-53673?
A fix for CVE-2023-53673 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-53673 are linked in the Vendor Advisories panel on this page.

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