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    CVE-2021-33630

    NULL Pointer Dereference vulnerability in openEuler kernel on Linux (network modules) allows Pointer Manipulation. This vulnerability is associated with program files net/sched/sch_cbs.C. This issue affects openEuler kernel: from 4.19.90 before 4.19.90-2401.3.

    Published:Jan 18, 2024
    Last Modified:May 7, 2025
    EPS:Jan 18, 2024
    EPSS Score:0.00053
    CVSS Score:5.5

    Affected Products

    Vendor
    Openatom
    Product
    Openeuler
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2021-33631 (CVSS 5.5) — Integer Overflow or Wraparound vulnerability in openEuler kernel on Linux (filesystem modules) allows Forced I…
    CVE-2021-33640 (CVSS 6.2) — After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the li…
    CVE-2021-33644 (CVSS 8.1) — An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an callin…
    CVE-2021-33645 (CVSS 7.5) — The th_read() function doesn’t free a variable t->th_buf.gnu_longlink after allocating memory, which may cause…
    CVE-2021-33646 (CVSS 7.5) — The th_read() function doesn’t free a variable t->th_buf.gnu_longname after allocating memory, which may cause…
    CVE-2021-33643 (CVSS 9.1) — An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an callin…
    CVE-2021-33658 (CVSS 7.8) — atune before 0.3-0.8 log in as a local user and run the curl command to access the local atune url interface t…
    CVE-2021-33656 (CVSS 6.8) — When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.…

    References

    http://www.openwall.com/lists/oss-security/2024/01/30/10
    http://www.openwall.com/lists/oss-security/2024/01/30/3
    http://www.openwall.com/lists/oss-security/2024/01/30/4
    http://www.openwall.com/lists/oss-security/2024/01/30/5
    http://www.openwall.com/lists/oss-security/2024/01/30/9
    http://www.openwall.com/lists/oss-security/2024/01/31/2
    http://www.openwall.com/lists/oss-security/2024/01/31/3
    http://www.openwall.com/lists/oss-security/2024/02/02/6
    http://www.openwall.com/lists/oss-security/2024/02/02/9
    http://www.openwall.com/lists/oss-security/2024/02/03/1
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e8b9bfa110896f95d602d8c98d5f9d67e41d78c
    https://gitee.com/src-openeuler/kernel/pulls/1389
    https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
    https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1030
    https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1031
    http://www.openwall.com/lists/oss-security/2024/01/30/10
    http://www.openwall.com/lists/oss-security/2024/01/30/3
    http://www.openwall.com/lists/oss-security/2024/01/30/4
    http://www.openwall.com/lists/oss-security/2024/01/30/5
    http://www.openwall.com/lists/oss-security/2024/01/30/9
    http://www.openwall.com/lists/oss-security/2024/01/31/2
    http://www.openwall.com/lists/oss-security/2024/01/31/3
    http://www.openwall.com/lists/oss-security/2024/02/02/6
    http://www.openwall.com/lists/oss-security/2024/02/02/9
    http://www.openwall.com/lists/oss-security/2024/02/03/1
    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e8b9bfa110896f95d602d8c98d5f9d67e41d78c
    https://gitee.com/src-openeuler/kernel/pulls/1389
    https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
    https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1030
    https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1031

    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