{"id":"CVE-2025-68742","title":"kernel: bpf: Fix invalid prog->stats access when update_effective_progs fails (CVE-2025-68742)","summary":"An invalid memory access vulnerability was found in the Linux kernel's BPF cgroup subsystem. When update_effective_progs fails due to allocation failure (such as from fault injection), the code replaces the program with dummy_bpf_prog. If …","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-476","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 8","enterprise_linux 9"],"published":"2025-12-24","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:49:20+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68742.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68742.json"},{"url":"https://access.redhat.com/security/cve/CVE-2025-68742"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2425073"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-68742"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68742"},{"url":"https://lore.kernel.org/linux-cve-announce/2025122415-CVE-2025-68742-367d@gregkh/T"},{"url":"https://git.kernel.org/stable/c/93d1964773ff513c9bd530f7686d3e48b786fa6b"},{"url":"https://git.kernel.org/stable/c/bf2c990b012100610c0f1ec5c4ea434da2d080c2"},{"url":"https://git.kernel.org/stable/c/539137e3038ce6f953efd72110110f03c14c7d97"},{"url":"https://git.kernel.org/stable/c/56905bb70c8b88421709bb4e32fcba617aa37d41"},{"url":"https://git.kernel.org/stable/c/2579c356ccd35d06238b176e4b460978186d804b"},{"url":"https://git.kernel.org/stable/c/7dc211c1159d991db609bdf4b0fb9033c04adcbc"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00207,"epssPercentile":0.09627,"ingestedAt":"2026-09-08T15:33:26.995Z","slug":"CVE-2025-68742","body":"## Overview\n\nAn invalid memory access vulnerability was found in the Linux kernel's BPF cgroup subsystem. When update_effective_progs fails due to allocation failure (such as from fault injection), the code replaces the program with dummy_bpf_prog. If a softirq occurs and attempts to run the BPF filter, accessing dummy_bpf_prog.prog->stats triggers an invalid memory access because the dummy program's stats pointer is NULL.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68742.json)\n\n**kernel: bpf: Fix invalid prog->stats access when update_effective_progs fails** — rated Low by Red Hat. Released 2025-12-24, updated 2026-09-18.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207772,"id":"CVE-2025-68742","ts":1789841260759,"field":"cvss","old":null,"new":"4.7"},{"seq":207771,"id":"CVE-2025-68742","ts":1789841260759,"field":"severity","old":"none","new":"medium"}]}