{"id":"CVE-2026-72385","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-72385","generatedAt":"2026-10-28T01:11:00.317Z","title":"In the Linux kernel, the following vulnerability has been resolved: tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_entry() fprobe_fgraph_entry() sizes a shadow-stack reservation in one walk of the per-ip fprobe list and fills it in a…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_entry()\n\nfprobe_fgraph_entry() sizes a shadow-stack reservation in one walk of\nthe per-ip fprobe list and fills it in a second walk, both under\nrcu_read_lock() only. A fprobe registered on an already-live ip can\nbecome visible between the two walks, so the fill walk processes an\nexit_handler the sizing walk did not count and used runs past\nreserved_words. If the sizing walk counted nothing, fgraph_data is NULL\nand the first write_fprobe_header() faults:\n\n  Oops: general protection fault, probably for non-canonical address ...\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:fprobe_fgraph_entry+0xa38/0xf10 kernel/trace/fprobe.c:167\n  Call Trace:\n   <TASK>\n   function_graph_enter_regs+0x44c/0xa10 kernel/trace/fgraph.c:677\n   ftrace_graph_func+0xc5/0x140 arch/x86/kernel/ftrace.c:671\n   __kernel_text_address+0x9/0x40 kernel/extable.c:78\n   arch_stack_walk+0x117/0x170 arch/x86/kernel/stacktrace.c:26\n   kmem_cache_free+0x188/0x580 mm/slub.c:6378\n   tcp_data_queue+0x18d/0x6550 net/ipv4/tcp_input.c:5590\n   [...]\n   </TASK>\n\nThe list cannot be frozen across the two walks, so skip a node that does\nnot fit the reservation and count it as missed.","published":"2026-08-15T06:22:12.000Z","lastModified":"2026-08-17T06:18:43.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00206,"percentile":0.10627,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/367c49d6e283c17b56a31e7a8d964a079244264c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/62988204162fc382cfc7d9a185d40a751261e3a3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d655cca1c6e67eb081214d37eb231a869ead2f97","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72385","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}