CVE Feed

    Dashboard / CVE / CVE-2021-27365

    CVE-2021-27365

    An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.

    Published:Mar 5, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 7, 2021
    EPSS Score:0.00426
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    Solidfire Baseboard Management Controller
    Vendor
    Netapp
    Product
    Solidfire Baseboard Management Controller Firmware
    Vendor
    Oracle
    Product
    Tekelec Platform Distribution
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Aus
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Els
    Vendor
    Redhat
    Product
    Rhel Eus
    Vendor
    Redhat
    Product
    Rhel Extras Rt
    Vendor
    Redhat
    Product
    Rhel Tus

    Exploits

    https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.htmlhttps://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.htmlhttps://github.com/Iweisc/Kernel-CVE-2021-27365-hotfixhttps://github.com/WhatsWrongAndWhy/CVE-2021-27365

    Related CVEs

    CVE-2026-77118 (CVSS 8.4) — A heap out-of-bounds write exists in the Photo CD (PCD) decoder of GraphicsMagick. In DecodeImage() (coders/pc…
    CVE-2026-56968 (CVSS 3.7) — GNU SASL before 2.2.4 lacks sanitization of a short challenge in _gsasl_ntlm_client_step in the NTLM client, w…
    CVE-2026-49975 (CVSS 7.5) — Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of …
    CVE-2026-9256 (CVSS 9.2) — NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerabilit…
    CVE-2026-31431 (CVSS 7.8) — In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating …
    CVE-2026-34757 (CVSS 5.1) — LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network …
    CVE-2026-4775 (CVSS 7.8) — A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerabili…
    CVE-2025-63261 (CVSS 7.8) — AWStats 8.0 is vulnerable to Command Injection via the open function…
    CVE-2026-3497 (CVSS 6.9) — Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects …
    CVE-2026-1940 (CVSS 5.1) — An incomplete fix for CVE-2024-47778 allows an out-of-bounds read in gst_wavparse_adtl_chunk() function. The p…

    References

    http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
    https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
    https://bugzilla.suse.com/show_bug.cgi?id=1182715
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5
    https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
    https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
    https://security.netapp.com/advisory/ntap-20210409-0001/
    https://www.openwall.com/lists/oss-security/2021/03/06/1
    https://www.oracle.com/security-alerts/cpuoct2021.html
    http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
    https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html
    https://bugzilla.suse.com/show_bug.cgi?id=1182715
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ec98ea7070e94cc25a422ec97d1421e28d97b7ee
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5
    https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
    https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html
    https://security.netapp.com/advisory/ntap-20210409-0001/
    https://www.openwall.com/lists/oss-security/2021/03/06/1
    https://www.oracle.com/security-alerts/cpuoct2021.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