CVE-2022-3628

high

Published 2023-05-09 · Modified 2023-05-16

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CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.0

Description

A buffer overflow flaw was found in the Linux kernel Broadcom Full MAC Wi-Fi driver. This issue occurs when a user connects to a malicious USB device. This can allow a local user to crash the system or escalate their privileges.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Red Hat Errata — Red Hat Inc. · View original ↗ · Open-Errata-API

Description kernel: USB-accessible buffer overflow in brcmfmac Red Hat statement To mitigate this issue, prevent the brcmfmac module from being loaded. See https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. CVSS v3: 6.8 (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) Errata / fixed releases ProductPackageAdvisoryReleased Red Hat…

Description

kernel: USB-accessible buffer overflow in brcmfmac

Red Hat statement

To mitigate this issue, prevent the brcmfmac module from being loaded. See https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

CVSS v3: 6.8 (CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Errata / fixed releases

Product	Package	Advisory	Released
Red Hat Enterprise Linux 8	`kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8`	RHSA-2023:2736	2023-05-16T00:00:00Z
Red Hat Enterprise Linux 8	`kernel-0:4.18.0-477.10.1.el8_8`	RHSA-2023:2951	2023-05-16T00:00:00Z
Red Hat Enterprise Linux 8.6 Extended Update Support	`kernel-0:4.18.0-372.87.1.el8_6`	RHSA-2024:0412	2024-01-25T00:00:00Z
Red Hat Enterprise Linux 9	`kernel-0:5.14.0-284.11.1.el9_2`	RHSA-2023:2458	2023-05-09T00:00:00Z
Red Hat Enterprise Linux 9	`kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2`	RHSA-2023:2148	2023-05-09T00:00:00Z
Red Hat Enterprise Linux 9	`kernel-0:5.14.0-284.11.1.el9_2`	RHSA-2023:2458	2023-05-09T00:00:00Z
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8	`kernel-0:4.18.0-372.87.1.el8_6`	RHSA-2024:0412	2024-01-25T00:00:00Z

Package state

Product	Package	State
Red Hat Enterprise Linux 6	`kernel`	Out of support scope
Red Hat Enterprise Linux 7	`kernel`	Out of support scope
Red Hat Enterprise Linux 7	`kernel-rt`	Out of support scope

Apply commands

bash fix

Apply RHSA-2023:2736 for Red Hat Enterprise Linux 8

yum update -y kernel-rt
# or:
dnf upgrade -y kernel-rt

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

AlmaLinux Fixed 2 releases

Version	Status	Fixed in
9	Fixed	`kernel-doc-5.14.0-284.11.1.el9_2.noarch.rpm`
8	Fixed	`kernel-doc-4.18.0-477.10.1.el8_8.noarch.rpm`

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`6.2-1`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`6.0.8-1`
sid	Fixed	`6.0.8-1`
forky	Fixed	`6.0.8-1`
bullseye	Fixed	`5.10.158-1`
bookworm	Fixed	`6.0.8-1`

Red Hat Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.