PT-2022-5679 · Linux+9 · Linux Kernel+9
Tamás Koczka
·
Published
2022-11-03
·
Updated
2024-03-25
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CVE-2022-42896
CVSS v3.1
8.8
High
| Vector | AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel has use-after-free vulnerabilities in the net/bluetooth/l2cap core.c's
l2cap connect and l2cap le connect req functions. These vulnerabilities may allow code execution and leaking kernel memory remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim.Recommendations
Upgrade past commit https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 to resolve the issue. As a temporary workaround, consider disabling the
l2cap connect and l2cap le connect req functions until a patch is available. Restrict access to the net/bluetooth/l2cap core.c module to minimize the risk of exploitation. Avoid using Bluetooth connectivity in affected systems until the issue is resolved.Fix
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Rocky Linux
Suse
Ubuntu