CVE-2024-36968

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2024-06-08. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

A fix is available — apply it.

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

Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()

l2cap_le_flowctl_init() can cause both div-by-zero and an integer overflow since hdev->le_mtu may not fall in the valid range.

Move MTU from hci_dev to hci_conn to validate MTU and stop the connection process earlier if MTU is invalid. Also, add a missing validation in read_buffer_size() and make it return an error value if the validation fails. Now hci_conn_add() returns ERR_PTR() as it can fail due to the both a kzalloc failure and invalid MTU value.

divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 67 Comm: kworker/u5:0 Tainted: G W 6.9.0-rc5+ #20 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014 Workqueue: hci0 hci_rx_work RIP: 0010:l2cap_le_flowctl_init+0x19e/0x3f0 net/bluetooth/l2cap_core.c:547 Code: e8 17 17 0c 00 66 41 89 9f 84 00 00 00 bf 01 00 00 00 41 b8 02 00 00 00 4c 89 fe 4c 89 e2 89 d9 e8 27 17 0c 00 44 89 f0 31 d2 <66> f7 f3 89 c3 ff c3 4d 8d b7 88 00 00 00 4c 89 f0 48 c1 e8 03 42 RSP: 0018:ffff88810bc0f858 EFLAGS: 00010246 RAX: 00000000000002a0 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff88810bc0f7c0 RDI: ffffc90002dcb66f RBP: ffff88810bc0f880 R08: aa69db2dda70ff01 R09: 0000ffaaaaaaaaaa R10: 0084000000ffaaaa R11: 0000000000000000 R12: ffff88810d65a084 R13: dffffc0000000000 R14: 00000000000002a0 R15: ffff88810d65a000 FS: 0000000000000000(0000) GS:ffff88811ac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000100 CR3: 0000000103268003 CR4: 0000000000770ef0 PKRU: 55555554 Call Trace: l2cap_le_connect_req net/bluetooth/l2cap_core.c:4902 [inline] l2cap_le_sig_cmd net/bluetooth/l2cap_core.c:5420 [inline] l2cap_le_sig_channel net/bluetooth/l2cap_core.c:5486 [inline] l2cap_recv_frame+0xe59d/0x11710 net/bluetooth/l2cap_core.c:6809 l2cap_recv_acldata+0x544/0x10a0 net/bluetooth/l2cap_core.c:7506 hci_acldata_packet net/bluetooth/hci_core.c:3939 [inline] hci_rx_work+0x5e5/0xb20 net/bluetooth/hci_core.c:4176 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0x90f/0x1530 kernel/workqueue.c:3335 worker_thread+0x926/0xe70 kernel/workqueue.c:3416 kthread+0x2e3/0x380 kernel/kthread.c:388 ret_from_fork+0x5c/0x90 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]---

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
12.0%
KEV
Not listed

Published

June 8, 2024

Last Modified

November 21, 2024

References (10)

Vendor Advisories for CVE-2024-36968(2)

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

Patch Availability(24)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.8.0-40.40) @ noble2026-05-24ubuntu
ubuntulinux-tools-oracle-64k (6.8.0-1010.10) @ noble2026-05-24ubuntu
ubuntulinux-tools-oem-24.04a (6.8.0-1010.10) @ noble2026-05-24ubuntu
ubuntulinux-tools-raspi (6.8.0-1009.10) @ noble2026-05-24ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1055 (5.4.0-1055.59) @ focal2026-05-24ubuntu
ubuntulinux-tools-aws-lts-20.04 (5.4.0.1136.133) @ focal2026-05-24ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.127.126) @ jammy2026-05-24ubuntu
ubuntulinux-tools-aws-lts-22.04 (5.15.0.1073.73) @ jammy2026-05-24ubuntu
ubuntulinux-tools-oracle-lts-20.04 (5.4.0.1135.128) @ focal2026-05-24ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.127.137~20.04.1) @ focal2026-05-24ubuntu
ubuntulinux-tools-iot (5.4.0.1045.43) @ focal2026-05-24ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1120.132~18.04.1) @ bionic2026-05-24ubuntu
ubuntulinux-virtual-lts-xenial (4.4.0.262.268) @ xenial2026-05-24ubuntu
ubuntulinux-tools-kvm (4.4.0.1140.137) @ xenial2026-05-24ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.232.244~16.04.1) @ xenial2026-05-24ubuntu
ubuntulinux-tools-azure (4.15.0.1184.199~14.04.1) @ trusty2026-05-24ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1078.76) @ jammy2026-05-24ubuntu
ubuntulinux-tools-azure-lts-20.04 (5.4.0.1142.136) @ focal2026-05-24ubuntu
ubuntulinux-tools-intel-iotg (5.15.0.1071.71) @ jammy2026-05-24ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1078.87~20.04.1) @ focal2026-05-24ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1039.43) @ jammy2026-05-24ubuntu
ubuntulinux-tools-azure-edge (5.4.0.1142.149~18.04.1) @ bionic2026-05-24ubuntu
redhatkernel-0:5.14.0-570.12.1.el9_62025-05-13redhat
linuxKernel @ 6.6.32—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.

Weakness Classification(2)

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

Additional Vendor Advisories

(22)

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 12× in last 7d / 46× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 101 total refreshes for this CVE.

  1. 2026-07-23 02:38 UTCEG score recompute
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  75. 2026-05-24 00:28 UTCVendor advisory

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2024-36968?
CVE-2024-36968 is a medium vulnerability published on June 8, 2024. In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix div-by-zero in l2capleflowctl_init() l2capleflowctl_init() can cause both div-by-zero and an integer overflow since hdev->le_mtu may not fall in the valid range. Move MTU from hcidev to hciconn to validate MTU…
When was CVE-2024-36968 disclosed?
CVE-2024-36968 was first published in the National Vulnerability Database on June 8, 2024, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-36968 actively exploited?
CVE-2024-36968 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-36968?
CVE-2024-36968 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2024-36968?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-36968, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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