CVE-2020-29562

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    CVE-2020-29562

    Published: 4 Dec 2020Last Modified: 16 Oct 2026

    Summary:

    Details: The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

    References: https://cert-portal.siemens.com/productcert/html/ssa-398330.html, https://cert-portal.siemens.com/productcert/html/ssa-831302.html, https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVCUNLQ3HXGS4VPUQKWTJGRAW2KTFGXS/, https://security.gentoo.org/glsa/202101-20, https://security.netapp.com/advisory/ntap-20210122-0004/, https://sourceware.org/bugzilla/show_bug.cgi?id=26923

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0a8262a1b269f8f1602933248e69dfb041aab7a2
    Fixed -None

    Affected versions

    glibc-2.32

    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
    CVE-2020-29562 | CVE-DB