{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53557", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-04T15:14:15.923Z", "datePublished": "2025-10-04T15:17:02.077Z", "dateUpdated": "2026-05-11T19:47:16.582Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:47:16.582Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfprobe: Release rethook after the ftrace_ops is unregistered\n\nWhile running bpf selftests it's possible to get following fault:\n\n general protection fault, probably for non-canonical address \\\n 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI\n ...\n Call Trace:\n <TASK>\n fprobe_handler+0xc1/0x270\n ? __pfx_bpf_testmod_init+0x10/0x10\n ? __pfx_bpf_testmod_init+0x10/0x10\n ? bpf_fentry_test1+0x5/0x10\n ? bpf_fentry_test1+0x5/0x10\n ? bpf_testmod_init+0x22/0x80\n ? do_one_initcall+0x63/0x2e0\n ? rcu_is_watching+0xd/0x40\n ? kmalloc_trace+0xaf/0xc0\n ? do_init_module+0x60/0x250\n ? __do_sys_finit_module+0xac/0x120\n ? do_syscall_64+0x37/0x90\n ? entry_SYSCALL_64_after_hwframe+0x72/0xdc\n </TASK>\n\nIn unregister_fprobe function we can't release fp->rethook while it's\npossible there are some of its users still running on another cpu.\n\nMoving rethook_free call after fp->ops is unregistered with\nunregister_ftrace_function call."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/fprobe.c"], "versions": [{"version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d", "lessThan": "ce3ec57faff559ccae1e0150c1f077eb2df648a4", "status": "affected", "versionType": "git"}, {"version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d", "lessThan": "03d63255a5783243c110aec5e6ae2f1475c3be76", "status": "affected", "versionType": "git"}, {"version": "5b0ab78998e32564a011b14c4c7f9c81e2d42b9d", "lessThan": "5f81018753dfd4989e33ece1f0cb6b8aae498b82", "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/fprobe.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.40", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.4.5", "lessThanOrEqual": "6.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5", "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": "5.18", "versionEndExcluding": "6.1.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.4.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.18", "versionEndExcluding": "6.5"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ce3ec57faff559ccae1e0150c1f077eb2df648a4"}, {"url": "https://git.kernel.org/stable/c/03d63255a5783243c110aec5e6ae2f1475c3be76"}, {"url": "https://git.kernel.org/stable/c/5f81018753dfd4989e33ece1f0cb6b8aae498b82"}], "title": "fprobe: Release rethook after the ftrace_ops is unregistered", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "38286689-0DC4-488B-9C9D-06EA4998CA6F", "versionEndExcluding": "6.1.40", "versionStartIncluding": "5.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "923F6AEA-C2EF-4B08-B038-69A18F3D41F8", "versionEndExcluding": "6.4.5", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*", "matchCriteriaId": "0B3E6E4D-E24E-4630-B00C-8C9901C597B0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfprobe: Release rethook after the ftrace_ops is unregistered\n\nWhile running bpf selftests it's possible to get following fault:\n\n general protection fault, probably for non-canonical address \\\n 0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI\n ...\n Call Trace:\n <TASK>\n fprobe_handler+0xc1/0x270\n ? __pfx_bpf_testmod_init+0x10/0x10\n ? __pfx_bpf_testmod_init+0x10/0x10\n ? bpf_fentry_test1+0x5/0x10\n ? bpf_fentry_test1+0x5/0x10\n ? bpf_testmod_init+0x22/0x80\n ? do_one_initcall+0x63/0x2e0\n ? rcu_is_watching+0xd/0x40\n ? kmalloc_trace+0xaf/0xc0\n ? do_init_module+0x60/0x250\n ? __do_sys_finit_module+0xac/0x120\n ? do_syscall_64+0x37/0x90\n ? entry_SYSCALL_64_after_hwframe+0x72/0xdc\n </TASK>\n\nIn unregister_fprobe function we can't release fp->rethook while it's\npossible there are some of its users still running on another cpu.\n\nMoving rethook_free call after fp->ops is unregistered with\nunregister_ftrace_function call."}], "id": "CVE-2023-53557", "lastModified": "2026-03-21T00:59:31.447", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-10-04T16:15:51.050", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/03d63255a5783243c110aec5e6ae2f1475c3be76"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5f81018753dfd4989e33ece1f0cb6b8aae498b82"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ce3ec57faff559ccae1e0150c1f077eb2df648a4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: fprobe: Release rethook after the ftrace_ops is unregistered", "id": "2401471", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401471"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfprobe: Release rethook after the ftrace_ops is unregistered\nWhile running bpf selftests it's possible to get following fault:\ngeneral protection fault, probably for non-canonical address \\\n0x6b6b6b6b6b6b6b6b: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC NOPTI\n...\nCall Trace:\n<TASK>\nfprobe_handler+0xc1/0x270\n? __pfx_bpf_testmod_init+0x10/0x10\n? __pfx_bpf_testmod_init+0x10/0x10\n? bpf_fentry_test1+0x5/0x10\n? bpf_fentry_test1+0x5/0x10\n? bpf_testmod_init+0x22/0x80\n? do_one_initcall+0x63/0x2e0\n? rcu_is_watching+0xd/0x40\n? kmalloc_trace+0xaf/0xc0\n? do_init_module+0x60/0x250\n? __do_sys_finit_module+0xac/0x120\n? do_syscall_64+0x37/0x90\n? entry_SYSCALL_64_after_hwframe+0x72/0xdc\n</TASK>\nIn unregister_fprobe function we can't release fp->rethook while it's\npossible there are some of its users still running on another cpu.\nMoving rethook_free call after fp->ops is unregistered with\nunregister_ftrace_function call."], "name": "CVE-2023-53557", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53557\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53557\nhttps://lore.kernel.org/linux-cve-announce/2025100449-CVE-2023-53557-e7ba@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-06T14:41:24.892214+00:00", "updated": "2025-10-06T14:41:24.892275+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}