Selinux
Monthly
Missing authorization in the seunshare utility (policycoreutils through 3.10) permits a low-privileged local user running in an unconfined SELinux domain to send kill signals to root-owned processes also running in unconfined context - effectively enabling unprivileged denial-of-service against privileged system processes. The root cause (CWE-862) is the absence of ownership validation before allowing signal delivery, bypassing the expectation that non-root users cannot terminate root-owned processes. No public exploit has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.
The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.
The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.
The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __cil_verify_classpermission and __cil_pre_verify_helper). Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. Rated medium severity (CVSS 6.1), this vulnerability is low attack complexity.
Context relabeling of filesystems is vulnerable to symbolic link attack, allowing a local, unprivileged malicious entity to change the SELinux context of an arbitrary file to a context with few. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.
selinux-policy when sysctl fs.protected_hardlinks are set to 0 allows local users to cause a denial of service (SSH login prevention) by creating a hardlink to /etc/passwd from a directory named. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
SELinux policycoreutils allows local users to execute arbitrary commands outside of the sandbox via a crafted TIOCSTI ioctl call. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity.
The get_rpm_nvr_by_file_path_temporary function in util.py in setroubleshoot before 3.2.22 allows remote attackers to execute arbitrary commands via shell metacharacters in a file name. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 36.5%.
Missing authorization in the seunshare utility (policycoreutils through 3.10) permits a low-privileged local user running in an unconfined SELinux domain to send kill signals to root-owned processes also running in unconfined context - effectively enabling unprivileged denial-of-service against privileged system processes. The root cause (CWE-862) is the absence of ownership validation before allowing signal delivery, bypassing the expectation that non-root users cannot terminate root-owned processes. No public exploit has been identified and this vulnerability is not listed in the CISA KEV catalog at time of analysis.
The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.
The CIL compiler in SELinux 3.2 has a use-after-free in cil_reset_classpermission (called from cil_reset_classperms_set and cil_reset_classperms_list). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.
The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __verify_map_perm_classperms and hashtab_map). Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. Public exploit code available.
The CIL compiler in SELinux 3.2 has a use-after-free in __cil_verify_classperms (called from __cil_verify_classpermission and __cil_pre_verify_helper). Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
A flaw was found in the Linux kernels SELinux LSM hook implementation before version 5.7, where it incorrectly assumed that an skb would only contain a single netlink message. Rated medium severity (CVSS 6.1), this vulnerability is low attack complexity.
Context relabeling of filesystems is vulnerable to symbolic link attack, allowing a local, unprivileged malicious entity to change the SELinux context of an arbitrary file to a context with few. Rated medium severity (CVSS 4.4), this vulnerability is low attack complexity. No vendor patch available.
selinux-policy when sysctl fs.protected_hardlinks are set to 0 allows local users to cause a denial of service (SSH login prevention) by creating a hardlink to /etc/passwd from a directory named. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
SELinux policycoreutils allows local users to execute arbitrary commands outside of the sandbox via a crafted TIOCSTI ioctl call. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity.
The get_rpm_nvr_by_file_path_temporary function in util.py in setroubleshoot before 3.2.22 allows remote attackers to execute arbitrary commands via shell metacharacters in a file name. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 36.5%.