Bug 2147356 (CVE-2022-42895) - CVE-2022-42895 kernel: Information leak in l2cap_parse_conf_req in net/bluetooth/l2cap_core.c
Summary: CVE-2022-42895 kernel: Information leak in l2cap_parse_conf_req in net/blueto...
Keywords:
Status: NEW
Alias: CVE-2022-42895
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
Depends On: 2148406 2148407 2148408 2148409 2147358
Blocks: 2142956
TreeView+ depends on / blocked
 
Reported: 2022-11-23 19:19 UTC by Pedro Sampaio
Modified: 2023-07-07 08:29 UTC (History)
34 users (show)

Fixed In Version: kernel 6.1-rc4
Doc Type: If docs needed, set a value
Doc Text:
An information leak vulnerability was found in the Linux kernel's implementation of logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack in the l2cap_parse_conf_req function. An attacker with physical access within the range of standard Bluetooth transmission could use this flaw to leak kernel pointers via Bluetooth if within proximity of the victim.
Clone Of:
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Description Pedro Sampaio 2022-11-23 19:19:36 UTC 
There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely.

References:

https://kernel.dance/#b1a2cd50c0357f243b7435a732b4e62ba3157a2e
https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e
Comment 1 Pedro Sampaio 2022-11-23 19:20:16 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2147358]
Comment 5 Justin M. Forbes 2022-11-30 20:24:40 UTC 
This was fixed for Fedora with the 6.0.8 stable kernel updates.
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