CVE Feed

    Dashboard / CVE / CVE-2020-29661

    CVE-2020-29661

    A locking issue was discovered in the tty subsystem of the Linux kernel through 5.9.13. drivers/tty/tty_jobctrl.c allows a use-after-free attack against TIOCSPGRP, aka CID-54ffccbf053b.

    Published:Dec 4, 2020
    Last Modified:Nov 21, 2024
    EPS:Dec 9, 2020
    EPSS Score:0.00278
    CVSS Score:7.8

    Affected Products

    Vendor
    Broadcom
    Product
    Fabric Operating System
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Linux
    Product
    Linux Kernel
    Vendor
    Netapp
    Product
    8300
    Vendor
    Netapp
    Product
    8300 Firmware
    Vendor
    Netapp
    Product
    8700
    Vendor
    Netapp
    Product
    8700 Firmware
    Vendor
    Netapp
    Product
    A400
    Vendor
    Netapp
    Product
    A400 Firmware
    Vendor
    Netapp
    Product
    A700s
    Vendor
    Netapp
    Product
    A700s Firmware
    Vendor
    Netapp
    Product
    Active Iq Unified Manager
    Vendor
    Netapp
    Product
    H410c
    Vendor
    Netapp
    Product
    H410c Firmware
    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://github.com/wojkos9/arm-CVE-2020-29661

    Related CVEs

    CVE-2025-58381 (CVSS 4.6) — A vulnerability in Brocade Fabric OS before 9.2.1c2 could allow an authenticated attacker with admin privile…
    CVE-2025-9711 (CVSS 8.5) — A vulnerability in Brocade Fabric OS before 9.2.1c3 could allow elevating the privileges of the local authenti…
    CVE-2025-58380 (CVSS 4.6) — A vulnerability in Brocade Fabric OS before 9.2.1 could allow an authenticated attacker with admin privileges …
    CVE-2026-0383 (CVSS 8.2) — A vulnerability in Brocade Fabric OS could allow an authenticated, local attacker with privileges to access th…
    CVE-2025-58379 (CVSS 6) — Brocade Fabric OS before 9.2.1 has a vulnerability that could allow a local authenticated attacker to reveal c…
    CVE-2025-58383 (CVSS 8.4) — A vulnerability in Brocade Fabric OS versions before 9.2.1c2 could allow an administrator-level user to execut…
    CVE-2025-58382 (CVSS 8.5) — A vulnerability in the secure configuration of authentication and management services in Brocade Fabric OS be…
    CVE-2025-4663 (CVSS 6.8) — An Improper Check for Unusual or Exceptional Conditions vulnerability in Brocade Fabric OS before 9.2.2.a co…
    CVE-2025-4661 (CVSS 4.8) — A path transversal vulnerability in Brocade Fabric OS 9.1.0 through 9.2.2 could allow a local admin user to …
    CVE-2025-1976 (CVSS 8.6) — Brocade Fabric OS versions starting with 9.1.0 have root access removed, however, a local user with admin priv…

    References

    http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html
    http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html
    http://www.openwall.com/lists/oss-security/2020/12/10/1
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc
    https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
    https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/
    https://security.netapp.com/advisory/ntap-20210122-0001/
    https://www.debian.org/security/2021/dsa-4843
    https://www.oracle.com/security-alerts/cpuoct2021.html
    http://packetstormsecurity.com/files/160681/Linux-TIOCSPGRP-Broken-Locking.html
    http://packetstormsecurity.com/files/164950/Kernel-Live-Patch-Security-Notice-LSN-0082-1.html
    http://www.openwall.com/lists/oss-security/2020/12/10/1
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=54ffccbf053b5b6ca4f6e45094b942fab92a25fc
    https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
    https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOB25SU6XUL4TNP7KB63WNZSYTIYFDPP/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZ7OAKAEFAXQRGBZK4LYUWINCD3D2XCL/
    https://security.netapp.com/advisory/ntap-20210122-0001/
    https://www.debian.org/security/2021/dsa-4843
    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