CVE-2022-49139: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt This event is just specified for SCO and eSCO link types. On the reception of a HCI_Synchronous_Connection_Complete for a BDADDR of an existing LE connection, LE link type and a status that triggers the second case of the packet processing a NULL pointer dereference happens, as conn->link is NULL.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 5.4.231
linux	linux_kernel	5.5 — 5.10.167
linux	linux_kernel	5.11 — 5.15.92
linux	linux_kernel	5.16 — 5.17.3

References

Advisories & Patches

https://git.kernel.org/stable/c/0f9db1209f59844839175b5b907d3778cafde93d https://git.kernel.org/stable/c/1c1291a84e94f6501644634c97544bb8291e9a1a https://git.kernel.org/stable/c/3afee2118132e93e5f6fa636dfde86201a860ab3 https://git.kernel.org/stable/c/c1aa0dd52db4ce888be0bd820c3fa918d350ca0b https://git.kernel.org/stable/c/f61c23e73dc653b957781066abfa8105c3fa3f5b

Frequently Asked Questions

What is CVE-2022-49139? +

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt This event is just specified for SCO and eSCO link types. On the reception of a HCI_Synchronous_Connection_Complete for a BDADDR of an existing LE connection, LE link type and a status that triggers the second case of the packet processing a NULL pointer dereference happens, as conn->link is NULL. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49139? +

CVE-2022-49139 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49139? +

CVE-2022-49139 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-49139? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-49139