CVE-2022-42896

Info Leak in l2cap_core in the Linux Kernel

HIGH

8.8

CVSS Score

Published: November 23, 2022 at 02:11 PM UTC

Updated: October 14, 2026 at 07:16 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH8.8

Exploit prediction

EPSS 2%

SSVC

No known exploit

Description

There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 4.9.3354.10 ≤ v < 4.14.3014.15 ≤ v < 4.19.2684.20 ≤ v < 5.4.2265.11 ≤ v < 5.15.785.16 ≤ v < 6.0.85.5 ≤ v < 5.10.1543.0.0

Affected range stops below 4.14.301, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.19.268, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.9.335, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.10.154, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.15.78, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.4.226, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

PatchThird Party Advisory

Source: [email protected]

https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4

PatchVendor Advisory

Source: [email protected]

https://kernel.dance/#711f8c3fb3db61897080468586b970c87c61d9e4

Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

https://cert-portal.siemens.com/productcert/html/ssa-794697.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-416

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