{"api_version":"1","generated_at":"2026-08-21T20:39:25+00:00","cve":"CVE-2026-72385","urls":{"html":"https://cve.report/CVE-2026-72385","api":"https://cve.report/api/cve/CVE-2026-72385.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72385","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72385"},"summary":{"title":"tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_entry()","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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:12","updated_at":"2026-08-17 06:18:43"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/367c49d6e283c17b56a31e7a8d964a079244264c","name":"https://git.kernel.org/stable/c/367c49d6e283c17b56a31e7a8d964a079244264c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d655cca1c6e67eb081214d37eb231a869ead2f97","name":"https://git.kernel.org/stable/c/d655cca1c6e67eb081214d37eb231a869ead2f97","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/62988204162fc382cfc7d9a185d40a751261e3a3","name":"https://git.kernel.org/stable/c/62988204162fc382cfc7d9a185d40a751261e3a3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72385","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72385","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4346ba1604093305a287e08eb465a9c15ba05b80 62988204162fc382cfc7d9a185d40a751261e3a3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4346ba1604093305a287e08eb465a9c15ba05b80 d655cca1c6e67eb081214d37eb231a869ead2f97 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4346ba1604093305a287e08eb465a9c15ba05b80 367c49d6e283c17b56a31e7a8d964a079244264c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72385","cve":"CVE-2026-72385","epss":"0.001980000","percentile":"0.099060000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/trace/fprobe.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"62988204162fc382cfc7d9a185d40a751261e3a3","status":"affected","version":"4346ba1604093305a287e08eb465a9c15ba05b80","versionType":"git"},{"lessThan":"d655cca1c6e67eb081214d37eb231a869ead2f97","status":"affected","version":"4346ba1604093305a287e08eb465a9c15ba05b80","versionType":"git"},{"lessThan":"367c49d6e283c17b56a31e7a8d964a079244264c","status":"affected","version":"4346ba1604093305a287e08eb465a9c15ba05b80","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/trace/fprobe.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:13:38.517Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/62988204162fc382cfc7d9a185d40a751261e3a3"},{"url":"https://git.kernel.org/stable/c/d655cca1c6e67eb081214d37eb231a869ead2f97"},{"url":"https://git.kernel.org/stable/c/367c49d6e283c17b56a31e7a8d964a079244264c"}],"title":"tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_entry()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72385","datePublished":"2026-08-15T05:56:16.050Z","dateReserved":"2026-08-09T03:40:39.923Z","dateUpdated":"2026-08-17T05:13:38.517Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:12","lastModifiedDate":"2026-08-17 06:18:43","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72385","Ordinal":"1","Title":"tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_en","CVE":"CVE-2026-72385","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72385","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_en"}]}}}