UBUNTU-CVE-2022-48627

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    UBUNTU-CVE-2022-48627

    Published: 2 Mar 2024Last Modified: 21 Sept 2026
    Upstream:
    CVE-2022-48627
    Aliases:
    USN-6896-1
    USN-6896-2
    USN-6896-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: vt: fix memory overlapping when deleting chars in the buffer A memory overlapping copy occurs when deleting a long line. This memory overlapping copy can cause data corruption when scr_memcpyw is optimized to memcpy because memcpy does not ensure its behavior if the destination buffer overlaps with the source buffer. The line buffer is not always broken, because the memcpy utilizes the hardware acceleration, whose result is not deterministic. Fix this problem by using replacing the scr_memcpyw with scr_memmovew.

    References: https://ubuntu.com/security/CVE-2022-48627, https://git.kernel.org/linus/39cdb68c64d84e71a4a717000b6e5de208ee60cc, https://www.cve.org/CVERecord?id=CVE-2022-48627, https://ubuntu.com/security/notices/USN-6896-1, https://ubuntu.com/security/notices/USN-6896-2, https://ubuntu.com/security/notices/USN-6896-3, https://ubuntu.com/security/notices/USN-6896-4, https://ubuntu.com/security/notices/USN-6896-5

    Affected packages

    Package

    Name: linux

    Purl: pkg:deb/ubuntu/linux?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.11.0-12.19

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High