QID 352335

Date Published: 2021-05-27

QID 352335: Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-033

<DIV ID="issue_overview"> a locking inconsistency issue was discovered in the tty subsystem of the linux kernel through 5.9.13.
Drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may allow a read-after-free attack against tiocgsid, aka cid-c8bcd9c5be24. (
cve-2020-29660 ) a locking vulnerability was found in the tty subsystem of the linux kernel in drivers/tty/tty_jobctrl.c.
This flaw allows a local attacker to possibly corrupt memory or escalate privileges.
The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (
cve-2020-29661 ) </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 High - 7.2 severity.
    • Solution
    Please refer to Amazon advisory: ALASLIVEPATCH-2021-033 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352335

    CVE-2020-29660 | CVE-2020-29661 |
    Software Advisories
    Advisory ID Software Component Link
    ALASLIVEPATCH-2021-033 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-033.html
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