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Advisory severityMedium6.3Red Hat Linux

Medium [CVE-2022-1462] out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem

This medium-severity Red Hat Linux advisory covers CVE-2022-1462 affecting Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Virtualization 4 for Red Hat Enterprise Linux 8.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2022-1462 Source published Source updated

VulniPulse record published

CVE-2022-1462
Affected products & platforms
Red Hat LinuxLinux Kernel
Open source advisory

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Summary

An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flush_to_ldisc function.

This flaw allows a local user to crash the system or read unauthorized random data from memory. Red Hat severity: Moderate — CVSS 6.3 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H).

Weakness: CWE-125. Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.6 Extended Update Support; Red Hat Enterprise Linux 9; Red Hat Virtualization 4 for Red Hat Enterprise Linux 8.

Red Hat lists Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7 as not affected. Red Hat fixing advisory: RHSA-2023:2736, RHSA-2023:2951, RHSA-2024:0724, RHSA-2023:2458, RHSA-2023:2148.

Affected products named by the advisory: Red Hat package: kernel-rt.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 14 hours ago·verify at source

Fixed versions
  • kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8
  • kernel-0:4.18.0-477.10.1.el8_8
  • kernel-0:4.18.0-372.91.1.el8_6
  • kernel-0:5.14.0-284.11.1.el9_2
  • kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2
  • RHSA-2023:2736
  • RHSA-2023:2951
  • RHSA-2024:0724
  • RHSA-2023:2458
  • RHSA-2023:2148

Official advisory · high-confidence parse· fetched 14 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Official advisory · high-confidence parse· fetched 14 hours ago·verify at source

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