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Review reviewHigh

CVE-2022-48878

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Fix driver shutdown on closed serdev The driver shutdown callback (which sends EDL_SOC_RESET to the device over serdev) should not be invoked when HCI device is not open (e.g. if hci_dev_open_sync() failed), because the serdev and its TTY are not open either. Also skip this step if device is powered off (qca_power_shutdown()). The shutdown callback causes use-after-free during system reboot with Qualcomm Atheros Bluetooth: Unable to handle kernel paging request at virtual address 0072662f67726fd7 ... CPU...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.08.21
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Fix driver shutdown on closed serdev The driver shutdown callback (which sends EDL_SOC_RESET to the device over serdev) should not be invoked when HCI device is not open (e.g. if hci_dev_open_sync() failed), because the serdev and its TTY are not open either. Also skip this step if device is powered off (qca_power_shutdown()). The shutdown callback causes use-after-free during system reboot with Qualcomm Atheros Bluetooth: Unable to handle kernel paging request at virtual address 0072662f67726fd7 ... CPU...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < e84ec6e25df9bb0968599e92eacedaf3a0a5b587, >= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < 908d1742b6e694e84ead5c62e4b7c1bfbb8b46a3, >= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < ea3ebda47dd56f6e1c62f2e0e1b6e1b0a973e447, >= 7e7bbddd029b644f00f0ffbfbc485ed71977d0d5 < 272970be3dabd24cbe50e393ffee8f04aec3b9a8, >= 5.8, >= 5.8 < 5.10.165, >= 5.11 < 5.15.90, >= 5.16 < 6.1.8
Fixed versions
5.10.165, 5.15.90, 6.1.8

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

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