https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 06 Oct 2026 17:28:35 +0000 https://vulnerability.circl.lu/vuln/fkie_cve-2026-15779 <p>A flaw was found in samba&#39;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&#39;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.</p> <p>A flaw was found in samba&#39;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&#39;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-15779 https://vulnerability.circl.lu/vuln/ghsa-6fmw-7w5g-3pf9 <p>A flaw was found in samba&#39;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&#39;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.</p> <p>A flaw was found in samba&#39;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&#39;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.</p> https://vulnerability.circl.lu/vuln/ghsa-6fmw-7w5g-3pf9 https://vulnerability.circl.lu/vuln/oesa-2026-3364 <p><strong>Affected:</strong> openEuler:20.03-LTS-SP4: samba</p> <p>Samba is a suite of programs for Linux and Unix to interoperate with Windows. Security Fix(es):</p> <p>A flaw was found in samba&amp;apos;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&amp;apos;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.(CVE-2026-15779)</p> <p><strong>Affected:</strong> openEuler:20.03-LTS-SP4: samba</p> <p>Samba is a suite of programs for Linux and Unix to interoperate with Windows. Security Fix(es):</p> <p>A flaw was found in samba&amp;apos;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&amp;apos;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.(CVE-2026-15779)</p> https://vulnerability.circl.lu/vuln/oesa-2026-3364 https://vulnerability.circl.lu/vuln/suse-su-2026:3364-1 <p>Security update for samba</p> <p>Security update for samba</p> https://vulnerability.circl.lu/vuln/suse-su-2026:3364-1 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-15779 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: samba, Ubuntu:Pro:16.04:LTS: samba, Ubuntu:Pro:18.04:LTS: samba, Ubuntu:Pro:20.04:LTS: samba, Ubuntu:22.04:LTS: samba, Ubuntu:24.04:LTS: samba, Ubuntu:26.04:LTS: samba</p> <p>A flaw was found in samba&#39;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&#39;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: samba, Ubuntu:Pro:16.04:LTS: samba, Ubuntu:Pro:18.04:LTS: samba, Ubuntu:Pro:20.04:LTS: samba, Ubuntu:22.04:LTS: samba, Ubuntu:24.04:LTS: samba, Ubuntu:26.04:LTS: samba</p> <p>A flaw was found in samba&#39;s pam_winbind. When mkhomedir is enabled, pam_winbind chowns the target account&#39;s home directory without validating the path is not a critical system directory such as /. On affected systems, accounts with / as their home directory (a common default for system accounts) can have this triggered not only by root, but by a non-root user holding a narrow sudo delegation to run commands as that account, causing ownership of / to change and resulting in severe denial of service (SSH, sudo, and package-manager failures). The change does not grant write access to / (which ships with restrictive 0555 permissions on RHEL), so the impact is availability loss rather than further privilege escalation.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-15779