QID 352466

Date Published: 2021-07-14

QID 352466: Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-052

<DIV ID="issue_overview"> a use-after-free flaw was found in hci_send_acl in the bluetooth host controller interface (hci) in linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system the issue results from the object hchan, freed in hci_disconn_loglink_complete_evt, yet still used in other places.
The highest threat from this vulnerability is to data integrity, confidentiality and system availability. (
cve-2021-33034 ) </DIV>

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as Medium - 4.6 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2LIVEPATCH-2021-052 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352466

    CVE-2021-33034 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2LIVEPATCH-2021-052 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-052.html
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