Review reviewHigh

CVE-2022-49470

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event We should not access skb buffer data anymore after hci_recv_frame was called. [ 39.634809] BUG: KASAN: use-after-free in btmtksdio_recv_event+0x1b0 [ 39.634855] Read of size 1 at addr ffffff80cf28a60d by task kworker [ 39.634962] Call trace: [ 39.634974] dump_backtrace+0x0/0x3b8 [ 39.634999] show_stack+0x20/0x2c [ 39.635016] dump_stack_lvl+0x60/0x78 [ 39.635040] print_address_description+0x70/0x2f0 [ 39.635062] kasan_report+0x154/0x194 [ 39.635079] __asan_repo...

CVSS: 8.8
EPSS: 0.31%
CISA KEV: Not listed
Published: 2025.02.26

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.31%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: Linux Linux, linux kernel
Affected versions: >= 9aebfd4a2200ab8075e44379c758bccefdc589bb < b3cec8a42fcd11d05313c724f27e01b1db77522c, >= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 02ba31e09a26e8cd4582ac8e6163d80284997727, >= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 01c6a899fa6be4f4cbf60c4f44f0f6691155415f, >= 9aebfd4a2200ab8075e44379c758bccefdc589bb < 0fab6361c4ba17d1b43a991bef4238a3c1754d35, >= 5.2, >= 5.2 < 5.15.54, >= 5.16 < 5.17.14, >= 5.18 < 5.18.3
Fixed versions: 5.15.54, 5.17.14, 5.18.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Linux Linux, linux kernel and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-416