{"id":"CVE-2022-1055","title":"A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation","summary":"A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e4…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416","CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 5.1, < 5.17","linux_kernel = 5.17","enterprise_linux = 8.0","fedora = 35","ubuntu_linux = 16.04","ubuntu_linux = 18.04","ubuntu_linux = 20.04","ubuntu_linux = 21.10","ubuntu_linux = 22.04","h300s_firmware","h500s_firmware","h700s_firmware","h300e_firmware","h500e_firmware","h700e_firmware","h410s_firmware","h410c_firmware"],"patched":["linux_kernel 5.17"],"published":"2022-03-29","updated":"2026-07-29","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-1055","references":[{"url":"http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html","label":"cve-coordination@google.com"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5","label":"cve-coordination@google.com"},{"url":"https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5","label":"cve-coordination@google.com"},{"url":"https://security.netapp.com/advisory/ntap-20220506-0007/","label":"cve-coordination@google.com"},{"url":"https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc","label":"cve-coordination@google.com"},{"url":"http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20220506-0007/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.005,"epssPercentile":0.41703,"ingestedAt":"2026-07-29T14:48:16.062Z","slug":"CVE-2022-1055","body":"## Overview\n\nA use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5\n\n## Affected\n\n- `linux_kernel >= 5.1, < 5.17`\n- `linux_kernel = 5.17`\n- `enterprise_linux = 8.0`\n- `fedora = 35`\n- `ubuntu_linux = 16.04`\n- `ubuntu_linux = 18.04`\n- `ubuntu_linux = 20.04`\n- `ubuntu_linux = 21.10`\n- `ubuntu_linux = 22.04`\n- `h300s_firmware`\n- `h500s_firmware`\n- `h700s_firmware`\n- `h300e_firmware`\n- `h500e_firmware`\n- `h700e_firmware`\n- `h410s_firmware`\n- `h410c_firmware`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.17`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}