{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2022-50078", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-06-18T10:57:27.408Z", "datePublished": "2025-06-18T11:02:21.119Z", "dateUpdated": "2025-06-18T11:02:21.119Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-06-18T11:02:21.119Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/eprobes: Do not allow eprobes to use $stack, or % for regs\n\nWhile playing with event probes (eprobes), I tried to see what would\nhappen if I attempted to retrieve the instruction pointer (%rip) knowing\nthat event probes do not use pt_regs. The result was:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000024\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP PTI\n CPU: 1 PID: 1847 Comm: trace-cmd Not tainted 5.19.0-rc5-test+ #309\n Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01\nv03.03 07/14/2016\n RIP: 0010:get_event_field.isra.0+0x0/0x50\n Code: ff 48 c7 c7 c0 8f 74 a1 e8 3d 8b f5 ff e8 88 09 f6 ff 4c 89 e7 e8\n50 6a 13 00 48 89 ef 5b 5d 41 5c 41 5d e9 42 6a 13 00 66 90 <48> 63 47 24\n8b 57 2c 48 01 c6 8b 47 28 83 f8 02 74 0e 83 f8 04 74\n RSP: 0018:ffff916c394bbaf0 EFLAGS: 00010086\n RAX: ffff916c854041d8 RBX: ffff916c8d9fbf50 RCX: ffff916c255d2000\n RDX: 0000000000000000 RSI: ffff916c255d2008 RDI: 0000000000000000\n RBP: 0000000000000000 R08: ffff916c3a2a0c08 R09: ffff916c394bbda8\n R10: 0000000000000000 R11: 0000000000000000 R12: ffff916c854041d8\n R13: ffff916c854041b0 R14: 0000000000000000 R15: 0000000000000000\n FS: 0000000000000000(0000) GS:ffff916c9ea40000(0000)\nknlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000024 CR3: 000000011b60a002 CR4: 00000000001706e0\n Call Trace:\n <TASK>\n get_eprobe_size+0xb4/0x640\n ? __mod_node_page_state+0x72/0xc0\n __eprobe_trace_func+0x59/0x1a0\n ? __mod_lruvec_page_state+0xaa/0x1b0\n ? page_remove_file_rmap+0x14/0x230\n ? page_remove_rmap+0xda/0x170\n event_triggers_call+0x52/0xe0\n trace_event_buffer_commit+0x18f/0x240\n trace_event_raw_event_sched_wakeup_template+0x7a/0xb0\n try_to_wake_up+0x260/0x4c0\n __wake_up_common+0x80/0x180\n __wake_up_common_lock+0x7c/0xc0\n do_notify_parent+0x1c9/0x2a0\n exit_notify+0x1a9/0x220\n do_exit+0x2ba/0x450\n do_group_exit+0x2d/0x90\n __x64_sys_exit_group+0x14/0x20\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nObviously this is not the desired result.\n\nMove the testing for TPARG_FL_TPOINT which is only used for event probes\nto the top of the \"$\" variable check, as all the other variables are not\nused for event probes. Also add a check in the register parsing \"%\" to\nfail if an event probe is used."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_probe.c"], "versions": [{"version": "7491e2c442781a1860181adb5ab472a52075f393", "lessThan": "ba53c21ce9773743b8e0a8ada048c96ff2d55c67", "status": "affected", "versionType": "git"}, {"version": "7491e2c442781a1860181adb5ab472a52075f393", "lessThan": "7c262114a576d94c0ced80e232bbb17391a55908", "status": "affected", "versionType": "git"}, {"version": "7491e2c442781a1860181adb5ab472a52075f393", "lessThan": "2673c60ee67e71f2ebe34386e62d348f71edee47", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_probe.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.63", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19.4", "lessThanOrEqual": "5.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.15.63"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "5.19.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ba53c21ce9773743b8e0a8ada048c96ff2d55c67"}, {"url": "https://git.kernel.org/stable/c/7c262114a576d94c0ced80e232bbb17391a55908"}, {"url": "https://git.kernel.org/stable/c/2673c60ee67e71f2ebe34386e62d348f71edee47"}], "title": "tracing/eprobes: Do not allow eprobes to use $stack, or % for regs", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/eprobes: Do not allow eprobes to use $stack, or % for regs\n\nWhile playing with event probes (eprobes), I tried to see what would\nhappen if I attempted to retrieve the instruction pointer (%rip) knowing\nthat event probes do not use pt_regs. The result was:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000024\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP PTI\n CPU: 1 PID: 1847 Comm: trace-cmd Not tainted 5.19.0-rc5-test+ #309\n Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01\nv03.03 07/14/2016\n RIP: 0010:get_event_field.isra.0+0x0/0x50\n Code: ff 48 c7 c7 c0 8f 74 a1 e8 3d 8b f5 ff e8 88 09 f6 ff 4c 89 e7 e8\n50 6a 13 00 48 89 ef 5b 5d 41 5c 41 5d e9 42 6a 13 00 66 90 <48> 63 47 24\n8b 57 2c 48 01 c6 8b 47 28 83 f8 02 74 0e 83 f8 04 74\n RSP: 0018:ffff916c394bbaf0 EFLAGS: 00010086\n RAX: ffff916c854041d8 RBX: ffff916c8d9fbf50 RCX: ffff916c255d2000\n RDX: 0000000000000000 RSI: ffff916c255d2008 RDI: 0000000000000000\n RBP: 0000000000000000 R08: ffff916c3a2a0c08 R09: ffff916c394bbda8\n R10: 0000000000000000 R11: 0000000000000000 R12: ffff916c854041d8\n R13: ffff916c854041b0 R14: 0000000000000000 R15: 0000000000000000\n FS: 0000000000000000(0000) GS:ffff916c9ea40000(0000)\nknlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000024 CR3: 000000011b60a002 CR4: 00000000001706e0\n Call Trace:\n <TASK>\n get_eprobe_size+0xb4/0x640\n ? __mod_node_page_state+0x72/0xc0\n __eprobe_trace_func+0x59/0x1a0\n ? __mod_lruvec_page_state+0xaa/0x1b0\n ? page_remove_file_rmap+0x14/0x230\n ? page_remove_rmap+0xda/0x170\n event_triggers_call+0x52/0xe0\n trace_event_buffer_commit+0x18f/0x240\n trace_event_raw_event_sched_wakeup_template+0x7a/0xb0\n try_to_wake_up+0x260/0x4c0\n __wake_up_common+0x80/0x180\n __wake_up_common_lock+0x7c/0xc0\n do_notify_parent+0x1c9/0x2a0\n exit_notify+0x1a9/0x220\n do_exit+0x2ba/0x450\n do_group_exit+0x2d/0x90\n __x64_sys_exit_group+0x14/0x20\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nObviously this is not the desired result.\n\nMove the testing for TPARG_FL_TPOINT which is only used for event probes\nto the top of the \"$\" variable check, as all the other variables are not\nused for event probes. Also add a check in the register parsing \"%\" to\nfail if an event probe is used."}], "id": "CVE-2022-50078", "lastModified": "2025-06-18T13:47:40.833", "metrics": {}, "published": "2025-06-18T11:15:36.753", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2673c60ee67e71f2ebe34386e62d348f71edee47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7c262114a576d94c0ced80e232bbb17391a55908"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba53c21ce9773743b8e0a8ada048c96ff2d55c67"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: tracing/eprobes: Do not allow eprobes to use $stack, or % for regs", "id": "2373466", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373466"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntracing/eprobes: Do not allow eprobes to use $stack, or % for regs\nWhile playing with event probes (eprobes), I tried to see what would\nhappen if I attempted to retrieve the instruction pointer (%rip) knowing\nthat event probes do not use pt_regs. The result was:\nBUG: kernel NULL pointer dereference, address: 0000000000000024\n#PF: supervisor read access in kernel mode\n#PF: error_code(0x0000) - not-present page\nPGD 0 P4D 0\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 1 PID: 1847 Comm: trace-cmd Not tainted 5.19.0-rc5-test+ #309\nHardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01\nv03.03 07/14/2016\nRIP: 0010:get_event_field.isra.0+0x0/0x50\nCode: ff 48 c7 c7 c0 8f 74 a1 e8 3d 8b f5 ff e8 88 09 f6 ff 4c 89 e7 e8\n50 6a 13 00 48 89 ef 5b 5d 41 5c 41 5d e9 42 6a 13 00 66 90 <48> 63 47 24\n8b 57 2c 48 01 c6 8b 47 28 83 f8 02 74 0e 83 f8 04 74\nRSP: 0018:ffff916c394bbaf0 EFLAGS: 00010086\nRAX: ffff916c854041d8 RBX: ffff916c8d9fbf50 RCX: ffff916c255d2000\nRDX: 0000000000000000 RSI: ffff916c255d2008 RDI: 0000000000000000\nRBP: 0000000000000000 R08: ffff916c3a2a0c08 R09: ffff916c394bbda8\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff916c854041d8\nR13: ffff916c854041b0 R14: 0000000000000000 R15: 0000000000000000\nFS: 0000000000000000(0000) GS:ffff916c9ea40000(0000)\nknlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000024 CR3: 000000011b60a002 CR4: 00000000001706e0\nCall Trace:\n<TASK>\nget_eprobe_size+0xb4/0x640\n? __mod_node_page_state+0x72/0xc0\n__eprobe_trace_func+0x59/0x1a0\n? __mod_lruvec_page_state+0xaa/0x1b0\n? page_remove_file_rmap+0x14/0x230\n? page_remove_rmap+0xda/0x170\nevent_triggers_call+0x52/0xe0\ntrace_event_buffer_commit+0x18f/0x240\ntrace_event_raw_event_sched_wakeup_template+0x7a/0xb0\ntry_to_wake_up+0x260/0x4c0\n__wake_up_common+0x80/0x180\n__wake_up_common_lock+0x7c/0xc0\ndo_notify_parent+0x1c9/0x2a0\nexit_notify+0x1a9/0x220\ndo_exit+0x2ba/0x450\ndo_group_exit+0x2d/0x90\n__x64_sys_exit_group+0x14/0x20\ndo_syscall_64+0x3b/0x90\nentry_SYSCALL_64_after_hwframe+0x46/0xb0\nObviously this is not the desired result.\nMove the testing for TPARG_FL_TPOINT which is only used for event probes\nto the top of the \"$\" variable check, as all the other variables are not\nused for event probes. Also add a check in the register parsing \"%\" to\nfail if an event probe is used."], "name": "CVE-2022-50078", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-50078\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-50078\nhttps://lore.kernel.org/linux-cve-announce/2025061855-CVE-2022-50078-54e5@gregkh/T"], "threat_severity": "Low"}