https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2021-31873.htmlhttps://patchthecve.com/cve/CVE-2021-31873.htmlWed, 17 Jun 2026 03:52:23 +0000CRITICAL 9.8: An issue was discovered in klibc before 2.0.9. Additions in the malloc() function may result in an integer overflow and a subsequent heap buffer overflow.https://patchthecve.com/cve/CVE-2021-31872.htmlhttps://patchthecve.com/cve/CVE-2021-31872.htmlWed, 17 Jun 2026 03:52:23 +0000CRITICAL 9.8: An issue was discovered in klibc before 2.0.9. Multiple possible integer overflows in the cpio command on 32-bit systems may result in a buffer overflow or other security impact.https://patchthecve.com/cve/CVE-2021-31871.htmlhttps://patchthecve.com/cve/CVE-2021-31871.htmlWed, 17 Jun 2026 03:52:23 +0000HIGH 7.5: An issue was discovered in klibc before 2.0.9. An integer overflow in the cpio command may result in a NULL pointer dereference on 64-bit systems.https://patchthecve.com/cve/CVE-2021-31870.htmlhttps://patchthecve.com/cve/CVE-2021-31870.htmlWed, 17 Jun 2026 03:52:22 +0000CRITICAL 9.8: An issue was discovered in klibc before 2.0.9. Multiplication in the calloc() function may result in an integer overflow and a subsequent heap buffer overflow.https://patchthecve.com/cve/CVE-2011-1930.htmlhttps://patchthecve.com/cve/CVE-2011-1930.htmlTue, 16 Jun 2026 23:30:24 +0000CRITICAL 9.8: In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.