CVE-2023-40283
HIGH
7.8
CVSS Score
Published: August 14, 2023 at 12:00 AM UTC
Updated: October 15, 2026 at 12:16 AM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxUbuntu Linux
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Severity
HIGH7.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%3.5 ≤ v < 4.14.3224.15 ≤ v < 4.19.2914.20 ≤ v < 5.4.2535.11 ≤ v < 5.15.1265.16 ≤ v < 6.1.455.5 ≤ v < 5.10.1906.2 ≤ v < 6.4.10
Affected range stops below 4.14.322, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.291, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.190, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.126, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.253, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.45, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.4.10, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (12)
Third Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.htmlThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.htmlMailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing ListIssue TrackingThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20231020-0007/SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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