CVE-2023-53075

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checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a\npg which is newly added to ftrace_pages_start in ftrace_process_locs().\nBefore the first pg->index++, index is 0 and accessing pg->records[-1].ip\nwill cause this problem.\n\nDon't check the ip when pg->index is 0."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/ftrace.c"], "versions": [{"version": "9644302e3315e7e36495d230d5ac7125a316d33e", "lessThan": "2de28e5ce34b22b73b833a21e2c45ae3aade3964", "status": "affected", "versionType": "git"}, {"version": "9644302e3315e7e36495d230d5ac7125a316d33e", "lessThan": "7569ee04b0e3b32df79f64db3a7138573edad9bc", "status": "affected", "versionType": "git"}, {"version": "9644302e3315e7e36495d230d5ac7125a316d33e", "lessThan": "ac58b88ccbbb8e9fb83e137cee04a856b1ea6635", "status": "affected", "versionType": "git"}, {"version": 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arch_check_ftrace_location\n check_kprobe_address_safe\n register_kprobe\n\nWhen checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a\npg which is newly added to ftrace_pages_start in ftrace_process_locs().\nBefore the first pg->index++, index is 0 and accessing pg->records[-1].ip\nwill cause this problem.\n\nDon't check the ip when pg->index is 0."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ftrace: Se corrige el acceso a direcciones no v\u00e1lidas en lookup_rec() cuando el \u00edndice es 0 KASAN inform\u00f3 el siguiente problema: BUG: KASAN: use-after-free en lookup_rec Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff000199270ff0 por la tarea modprobe CPU: 2 Comm: modprobe Rastreo de llamadas: kasan_report __asan_load8 lookup_rec ftrace_location arch_check_ftrace_location check_kprobe_address_safe register_kprobe Al verificar pg->records[pg->index - 1].ip en lookup_rec(), puede obtener un pg que se agreg\u00f3 recientemente a ftrace_pages_start en ftrace_process_locs(). Antes del primer pg->index++, el \u00edndice es 0 y acceder a pg->records[-1].ip causar\u00e1 este problema. No verifique la IP cuando pg->index sea 0."}], "id": "CVE-2023-53075", "lastModified": "2026-11-05T21:17:11.180", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53075", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T20:16:30.131235Z", "version": "2.0.3"}}]}, "published": "2025-05-02T16:15:26.510", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2a0d71fabfeb349216d33f001a6421b1768bd3a9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2de28e5ce34b22b73b833a21e2c45ae3aade3964"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4f84f31f63416b0f02fc146ffdc4ab32723eb7e8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7569ee04b0e3b32df79f64db3a7138573edad9bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/83c3b2f4e7c61367c7b24551f4c6eb94bbdda283"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac58b88ccbbb8e9fb83e137cee04a856b1ea6635"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ee92fa443358f4fc0017c1d0d325c27b37802504"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1bd8b7fd890d87d0dc4dedc6287ea34dd07c0b4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ftrace: Fix invalid address access in lookup_rec() when index is 0", "id": "2363790", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363790"}, "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:\nftrace: Fix invalid address access in lookup_rec() when index is 0\nKASAN reported follow problem:\nBUG: KASAN: use-after-free in lookup_rec\nRead of size 8 at addr ffff000199270ff0 by task modprobe\nCPU: 2 Comm: modprobe\nCall trace:\nkasan_report\n__asan_load8\nlookup_rec\nftrace_location\narch_check_ftrace_location\ncheck_kprobe_address_safe\nregister_kprobe\nWhen checking pg->records[pg->index - 1].ip in lookup_rec(), it can get a\npg which is newly added to ftrace_pages_start in ftrace_process_locs().\nBefore the first pg->index++, index is 0 and accessing pg->records[-1].ip\nwill cause this problem.\nDon't check the ip when pg->index is 0."], "name": "CVE-2023-53075", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "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"}], "public_date": "2025-05-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53075\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53075\nhttps://lore.kernel.org/linux-cve-announce/2025050215-CVE-2023-53075-6770@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-13T11:22:44.821336+00:00", "updated": "2025-07-13T11:22:44.821407+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}