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    CVE-2023-6606

    An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.

    Published:Dec 4, 2023
    Last Modified:Nov 8, 2025
    EPS:Dec 8, 2023
    EPSS Score:0.00009
    CVSS Score:7.1

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
    Vendor
    Redhat
    Product
    Logging
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhev Hypervisor

    Exploits

    https://bugzilla.kernel.org/show_bug.cgi?id=218218https://bugzilla.redhat.com/show_bug.cgi?id=2253611https://bugzilla.kernel.org/show_bug.cgi?id=218218https://bugzilla.redhat.com/show_bug.cgi?id=2253611

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-80925 — In the Linux kernel, the following vulnerability has been resolved: vlan: fix skb_under_panic and races when …
    CVE-2026-80924 (CVSS 7.5) — In the Linux kernel, the following vulnerability has been resolved: crypto: krb5 - use kfree_sensitive() for …
    CVE-2026-80923 — In the Linux kernel, the following vulnerability has been resolved: xhci: dbgtty: Fix unregister on tty_regis…
    CVE-2026-80922 — In the Linux kernel, the following vulnerability has been resolved: crypto: qcom-rng - Allow zero as a random…
    CVE-2026-80921 (CVSS 8.8) — In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits …
    CVE-2026-80920 — In the Linux kernel, the following vulnerability has been resolved: io_uring: defer eventfd signaling when qu…
    CVE-2026-80919 — In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix recursive ww_mutex acquir…
    CVE-2026-80918 — In the Linux kernel, the following vulnerability has been resolved: HID: core: fix number/pointer type confus…
    CVE-2026-80917 — In the Linux kernel, the following vulnerability has been resolved: PCI: host-generic: Fix NULL pointer deref…
    CVE-2026-80916 — In the Linux kernel, the following vulnerability has been resolved: kcov: fix data corruption and race condit…

    References

    https://access.redhat.com/errata/RHSA-2024:0723
    https://access.redhat.com/errata/RHSA-2024:0725
    https://access.redhat.com/errata/RHSA-2024:0881
    https://access.redhat.com/errata/RHSA-2024:0897
    https://access.redhat.com/errata/RHSA-2024:1188
    https://access.redhat.com/errata/RHSA-2024:1248
    https://access.redhat.com/errata/RHSA-2024:1404
    https://access.redhat.com/errata/RHSA-2024:2094
    https://access.redhat.com/security/cve/CVE-2023-6606
    https://bugzilla.kernel.org/show_bug.cgi?id=218218
    https://bugzilla.redhat.com/show_bug.cgi?id=2253611
    https://access.redhat.com/errata/RHSA-2024:0723
    https://access.redhat.com/errata/RHSA-2024:0725
    https://access.redhat.com/errata/RHSA-2024:0881
    https://access.redhat.com/errata/RHSA-2024:0897
    https://access.redhat.com/errata/RHSA-2024:1188
    https://access.redhat.com/errata/RHSA-2024:1248
    https://access.redhat.com/errata/RHSA-2024:1404
    https://access.redhat.com/errata/RHSA-2024:2094
    https://access.redhat.com/security/cve/CVE-2023-6606
    https://bugzilla.kernel.org/show_bug.cgi?id=218218
    https://bugzilla.redhat.com/show_bug.cgi?id=2253611
    https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
    https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html

    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