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High 7.8Published Aug 14, 2023
CVE-2023-40283An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10.
Updated under an hour ago ()
Does this affect you?
It affects Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.0 before V3.1.5 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 3.5 before 4.14.322; from 4.15 before 4.19.291; from 4.20 before 5.4.253; from 5.5 before 5.10.190; from 5.11 before 5.15.126; from 5.16 before 6.1.45; from 6.2 before 6.4.10 | NVD |
debian debian_linux debian:debian_linux | 10.0; 11.0; 12.0 | NVD |
canonical ubuntu_linux canonical:ubuntu_linux | 14.04; 16.04; 18.04; 20.04; 22.04 | NVD |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1728137b33c00d5a2b5110ed7aafb42e7c32e4a1patch
- https://github.com/torvalds/linux/commit/1728137b33c00d5a2b5110ed7aafb42e7c32e4a1patch
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.10release-notes
- https://www.debian.org/security/2023/dsa-5480vendor-advisory, third-party-advisory
- https://www.debian.org/security/2023/dsa-5492vendor-advisory, third-party-advisory
- http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.htmlthird-party-advisory, vdb-entry
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlmailing-list, third-party-advisory
- https://security.netapp.com/advisory/ntap-20231020-0007/third-party-advisory
- http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.htmlthird-party-advisory, vdb-entry
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlmailing-list, issue-tracking, third-party-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-806742.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.