Red Hat Security Advisory: rpm security update

Fixed packages 34

Vulnerabilities 4

• High 7.8
  CVE-2026-84837

  Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path

  A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous int…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu
  Sep 2, 2026
• High 7.8
  CVE-2026-84838

  Rpm: command injection in rpmuncompress via unescaped filenames passed to popen()

  A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properl…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Sep 2, 2026
• High 7.0
  CVE-2026-78367

  Rpm: rpmbuild gettarspec() crafted tar member name → macro injection

  A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro ex…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu
  Aug 24, 2026
• High 7.0
  CVE-2026-84233

  Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames

  A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This all…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Sep 1, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2462222
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2478408
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2478409
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2521857
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_99595.json
• report
  https://access.redhat.com/security/cve/CVE-2026-78367
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-78367
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-78367
• article
  https://github.com/rpm-software-management/rpm/issues/4314
• report
  https://access.redhat.com/security/cve/CVE-2026-84233
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-84233
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-84233
• report
  https://access.redhat.com/security/cve/CVE-2026-84837
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-84837
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-84837
• report
  https://access.redhat.com/security/cve/CVE-2026-84838
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-84838
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-84838