CVE-2023-40283

HIGHNVD 7.87.8—

7.8

An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 42.2%
KEV: Not listed

Published

August 14, 2023

Last Modified

February 25, 2026

References (20)

cve@mitrehttp://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
cve@mitrehttp://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
cve@mitrehttps://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10
cve@mitrehttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1
cve@mitrehttps://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1
cve@mitrehttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
cve@mitrehttps://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
cve@mitrehttps://security.netapp.com/advisory/ntap-20231020-0007/
cve@mitrehttps://www.debian.org/security/2023/dsa-5480
cve@mitrehttps://www.debian.org/security/2023/dsa-5492
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1
af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1

Patch Availability(27)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-tools-azure (4.15.0.1170.136) @ trusty	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04b (6.0.0.1021.21) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-nvidia-hwe-22.04-edge (6.2.0.1011.13) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.84.81) @ jammy	2026-05-24	ubuntu
ubuntu	linux-xilinx-zynqmp-tools-5.4.0-1030 (5.4.0-1030.34) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04c (6.1.0.1021.21) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-oracle-edge (5.15.0.1044.50~20.04.1) @ focal	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.2.0.33.33) @ lunar	2026-05-24	ubuntu
ubuntu	linux-tools-kvm (4.15.0.1145.136) @ bionic	2026-05-24	ubuntu
ubuntu	linux-virtual-lts-xenial (4.4.0.245.213) @ trusty	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-16.04-edge (4.15.0.218.202) @ bionic	2026-05-24	ubuntu
ubuntu	lowlatency-4.4 (4.4.0-168) @ xenial	2026-05-24	ubuntu
ubuntu	linux-tools-raspi2-hwe-18.04-edge (5.4.0.1094.124) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-raspi-nolpae (5.15.0.1038.36) @ jammy	2026-05-24	ubuntu
redhat	kernel-0:4.18.0-305.130.1.el8_4	2024-04-30	redhat
redhat	kernel-rt-0:4.18.0-305.130.1.rt7.206.el8_4	2024-04-30	redhat
redhat	kernel-0:4.18.0-477.51.1.el8_8	2024-03-19	redhat
redhat	kernel-rt-0:5.14.0-70.93.1.rt21.165.el9_0	2024-03-13	redhat
redhat	kernel-0:5.14.0-70.93.2.el9_0	2024-03-12	redhat
redhat	kernel-0:4.18.0-193.128.1.el8_2	2024-03-12	redhat
redhat	kernel-rt-0:4.18.0-193.128.1.rt13.179.el8_2	2024-03-12	redhat
redhat	kernel-rt-0:4.18.0-513.18.1.rt7.320.el8_9	2024-02-20	redhat
redhat	kernel-0:4.18.0-513.18.1.el8_9	2024-02-20	redhat
redhat	kernel-0:4.18.0-372.91.1.el8_6	2024-02-07	redhat
redhat	kernel-0:5.14.0-284.48.1.el9_2	2024-01-25	redhat
redhat	kernel-0:5.14.0-362.18.1.el9_3	2024-01-25	redhat
redhat	kernel-rt-0:5.14.0-284.48.1.rt14.333.el9_2	2024-01-25	redhat

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(1)

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

CWE-416Use After Free

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 58× 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.

2026-06-23 21:31 UTCEPSS rescore
2026-06-23 21:31 UTCEPSS rescore
2026-06-22 14:24 UTCEPSS rescore
2026-06-22 14:24 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
2026-06-21 14:55 UTCEPSS rescore
2026-06-21 01:58 UTCEPSS rescore
2026-06-21 01:58 UTCEPSS rescore
2026-06-19 19:24 UTCEPSS rescore
2026-06-19 19:24 UTCEPSS rescore
2026-06-18 17:51 UTCEPSS rescore
2026-06-17 17:51 UTCEPSS rescore
2026-06-17 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
2026-06-15 17:47 UTCEPSS rescore
2026-06-15 17:47 UTCEPSS rescore
2026-06-14 23:16 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-10 22:17 UTCEPSS rescore

Show 36 more

2026-06-09 23:47 UTCOSV refresh
2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-24 19:27 UTCEG score recompute
2026-05-24 19:27 UTCVendor advisory
2026-05-24 19:27 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-40283?

CVE-2023-40283 is a high vulnerability published on August 14, 2023. An issue was discovered in l2capsockrelease in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled.

When was CVE-2023-40283 disclosed?

CVE-2023-40283 was first published in the National Vulnerability Database on August 14, 2023, with the most recent update on February 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-40283 actively exploited?

CVE-2023-40283 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 42.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-40283?

CVE-2023-40283 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2023-40283?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-40283, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-40283

Explore →

Is Your Infrastructure Affected by CVE-2023-40283?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2023-40283

Published

Last Modified

References (20)

Patch Availability(27)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-40283?

Same vendor

Same CWE

CVE-2023-40283

📅 Published

🔄 Last Modified

🔗 References (20)

Patch Availability(27)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-40283?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (20)

Frequently asked(5)

Related CVEs(same vendor + same CWE)