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    CVE-2021-38185

    GNU cpio through 2.13 allows attackers to execute arbitrary code via a crafted pattern file, because of a dstring.c ds_fgetstr integer overflow that triggers an out-of-bounds heap write. NOTE: it is unclear whether there are common cases where the pattern file, associated with the -E option, is untrusted data.

    Published:Aug 6, 2021
    Last Modified:Jun 9, 2025
    EPS:Aug 7, 2021
    EPSS Score:0.27892
    CVSS Score:7.8

    Affected Products

    Vendor
    Gnu
    Product
    Cpio
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://github.com/fangqyi/cpiopwnhttps://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00000.htmlhttps://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00002.htmlhttps://github.com/fangqyi/cpiopwnhttps://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00000.htmlhttps://lists.gnu.org/archive/html/bug-cpio/2021-08/msg00002.htmlhttps://github.com/fangqyi/cpiopwn

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2026-66484 (CVSS 4.6) — GNU cpio contains a Path Traversal vulnerability in its tar archive extraction functionality. When extracting …
    CVE-2023-7216 (CVSS 5.3) — A path traversal vulnerability was found in the CPIO utility. This issue could allow a remote unauthenticated …
    CVE-2023-7207 (CVSS 4.9) — Debian's cpio contains a path traversal vulnerability. This issue was introduced by reverting CVE-2015-1197 pa…
    CVE-2019-14866 (CVSS 7.3) — In all versions of cpio before 2.13 does not properly validate input files when generating TAR archives. When …
    CVE-2016-2037 (CVSS 6.5) — The cpio_safer_name_suffix function in util.c in cpio 2.11 allows remote attackers to cause a denial of servic…
    CVE-2015-1197 (CVSS 1.9) — cpio 2.11, when using the --no-absolute-filenames option, allows local users to write to arbitrary files via a…
    CVE-2014-9112 (CVSS 5) — Heap-based buffer overflow in the process_copy_in function in GNU Cpio 2.11 allows remote attackers to cause a…
    CVE-2010-4226 (CVSS 7.2) — cpio, as used in build 2007.05.10, 2010.07.28, and possibly other versions, allows remote attackers to overwri…

    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