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    CVE-2022-39188

    An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs.

    Published:Jul 6, 2022
    Last Modified:Nov 21, 2024
    EPS:Sep 2, 2022
    EPSS Score:0.00029
    CVSS Score:4.7

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    No exploit reference

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    References

    https://bugs.chromium.org/p/project-zero/issues/detail?id=2329
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15
    https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15
    https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
    https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
    https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
    https://www.debian.org/security/2022/dsa-5257
    https://bugs.chromium.org/p/project-zero/issues/detail?id=2329
    https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19
    https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b67fbebd4cf980aecbcc750e1462128bffe8ae15
    https://github.com/torvalds/linux/commit/b67fbebd4cf980aecbcc750e1462128bffe8ae15
    https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html
    https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
    https://lore.kernel.org/stable/CAG48ez3SEqOPcPCYGHVZv4iqEApujD5VtM3Re-tCKLDEFdEdbg%40mail.gmail.com/
    https://www.debian.org/security/2022/dsa-5257

    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