CVE-2024-27070

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-27070", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.216Z", "datePublished": "2024-05-01T13:04:26.824Z", "dateUpdated": "2026-08-05T11:29:21.725Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:29:21.725Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid use-after-free issue in f2fs_filemap_fault\n\nsyzbot reports a f2fs bug as below:\n\nBUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\nRead of size 8 at addr ffff88807bb22680 by task syz-executor184/5058\n\nCPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x163/0x540 mm/kasan/report.c:488\n kasan_report+0x142/0x170 mm/kasan/report.c:601\n f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\n __do_fault+0x131/0x450 mm/memory.c:4376\n do_shared_fault mm/memory.c:4798 [inline]\n do_fault mm/memory.c:4872 [inline]\n do_pte_missing mm/memory.c:3745 [inline]\n handle_pte_fault mm/memory.c:5144 [inline]\n __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285\n handle_mm_fault+0x27e/0x770 mm/memory.c:5450\n do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]\n handle_page_fault arch/x86/mm/fault.c:1507 [inline]\n exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563\n asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570\n\nThe root cause is: in f2fs_filemap_fault(), vmf->vma may be not alive after\nfilemap_fault(), so it may cause use-after-free issue when accessing\nvmf->vma->vm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags\nin separated temporary variable for tracepoint use."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerability is triggered through page faults on a memory mapping of a local f2fs file, requiring the attacker to execute code on the system (mmap plus a concurrent munmap thread). There is no remote or adjacent-network path into f2fs_filemap_fault().\nAC:L - The attacker controls both sides of the race \u2014 one thread faults on an evicted page (forced via MADV_DONTNEED/POSIX_FADV_DONTNEED so do_sync_mmap_readahead must drop the fault lock and block on I/O) while a sibling thread munmaps the VMA \u2014 giving a wide, deterministic window that syzkaller reproduced.\nPR:L - Only an ordinary unprivileged local account is needed: no capability, ioctl gate, or admin operation is involved, just creating a file, mmapping it, and faulting. On Android and embedded devices f2fs is already the mounted data filesystem, so any app or user reaches this path directly.\nUI:N - The attacker uses its own file on an already-mounted f2fs volume and drives both the fault and the munmap itself. No victim action such as mounting an image or opening a file is required.\nS:U - The dangling dereference and any resulting disclosure or crash stay entirely within the kernel's own security authority on the affected host. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free read of a freed vm_area_struct whose contents the attacker can groom by spraying the dedicated, easily-controlled vm_area_cachep, and the stale value is exported into the kernel trace buffer via trace_f2fs_filemap_fault (the f2fs event group is enabled in real deployments such as Android/Perfetto tracing), disclosing freed kernel heap contents including pointers.\nI:N - The defect is purely a stale load \u2014 the fix merely hoists the vm_flags read before filemap_fault() \u2014 and nothing is written to the freed object or anywhere out of bounds. The read value is only passed to a tracepoint and influences no kernel decision or control flow, so no integrity primitive exists.\nA:H - Reading a freed vm_area_struct can fault and oops the kernel \u2014 a KFENCE-sampled VMA (KFENCE ships enabled on Android and distro kernels) leaves its page unmapped after free, and DEBUG_PAGEALLOC/KASAN builds panic outright, with panic_on_oops turning this into a full system crash. The race is repeatable indefinitely by an unprivileged process, so the crash can be driven reliably."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/file.c"], "versions": [{"version": "b43c3050d21196e5e7024872e3048dba83e31751", "lessThan": "897761d16564e899faecb9381b4818858705081f", "status": "affected", "versionType": "git"}, {"version": "87f3afd366f7c668be0269efda8a89741a3ea6b3", "lessThan": "8186e16a766d709a08f188d2f4e84098f364bea1", "status": "affected", "versionType": "git"}, {"version": "87f3afd366f7c668be0269efda8a89741a3ea6b3", "lessThan": "eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/file.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "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": "6.8", "versionEndExcluding": "6.8.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.9"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/897761d16564e899faecb9381b4818858705081f"}, {"url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1"}, {"url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064"}], "title": "f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-27070", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-28T16:13:45.773958Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-04T17:47:09.114Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:27:57.831Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:27:57.831Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-27070", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-05-28T16:13:45.773958Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-05-28T16:13:49.870Z"}, "title": "CISA ADP Vulnrichment"}], "cna": {"title": "f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerability is triggered through page faults on a memory mapping of a local f2fs file, requiring the attacker to execute code on the system (mmap plus a concurrent munmap thread). There is no remote or adjacent-network path into f2fs_filemap_fault().\nAC:L - The attacker controls both sides of the race \u2014 one thread faults on an evicted page (forced via MADV_DONTNEED/POSIX_FADV_DONTNEED so do_sync_mmap_readahead must drop the fault lock and block on I/O) while a sibling thread munmaps the VMA \u2014 giving a wide, deterministic window that syzkaller reproduced.\nPR:L - Only an ordinary unprivileged local account is needed: no capability, ioctl gate, or admin operation is involved, just creating a file, mmapping it, and faulting. On Android and embedded devices f2fs is already the mounted data filesystem, so any app or user reaches this path directly.\nUI:N - The attacker uses its own file on an already-mounted f2fs volume and drives both the fault and the munmap itself. No victim action such as mounting an image or opening a file is required.\nS:U - The dangling dereference and any resulting disclosure or crash stay entirely within the kernel's own security authority on the affected host. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free read of a freed vm_area_struct whose contents the attacker can groom by spraying the dedicated, easily-controlled vm_area_cachep, and the stale value is exported into the kernel trace buffer via trace_f2fs_filemap_fault (the f2fs event group is enabled in real deployments such as Android/Perfetto tracing), disclosing freed kernel heap contents including pointers.\nI:N - The defect is purely a stale load \u2014 the fix merely hoists the vm_flags read before filemap_fault() \u2014 and nothing is written to the freed object or anywhere out of bounds. The read value is only passed to a tracepoint and influences no kernel decision or control flow, so no integrity primitive exists.\nA:H - Reading a freed vm_area_struct can fault and oops the kernel \u2014 a KFENCE-sampled VMA (KFENCE ships enabled on Android and distro kernels) leaves its page unmapped after free, and DEBUG_PAGEALLOC/KASAN builds panic outright, with panic_on_oops turning this into a full system crash. The race is repeatable indefinitely by an unprivileged process, so the crash can be driven reliably."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b43c3050d21196e5e7024872e3048dba83e31751", "lessThan": "897761d16564e899faecb9381b4818858705081f", "versionType": "git"}, {"status": "affected", "version": "87f3afd366f7c668be0269efda8a89741a3ea6b3", "lessThan": "8186e16a766d709a08f188d2f4e84098f364bea1", "versionType": "git"}, {"status": "affected", "version": "87f3afd366f7c668be0269efda8a89741a3ea6b3", "lessThan": "eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064", "versionType": "git"}], "programFiles": ["fs/f2fs/file.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"status": "unaffected", "version": "0", "lessThan": "6.8", "versionType": "semver"}, {"status": "unaffected", "version": "6.8.2", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/f2fs/file.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/897761d16564e899faecb9381b4818858705081f"}, {"url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1"}, {"url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid use-after-free issue in f2fs_filemap_fault\n\nsyzbot reports a f2fs bug as below:\n\nBUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\nRead of size 8 at addr ffff88807bb22680 by task syz-executor184/5058\n\nCPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x163/0x540 mm/kasan/report.c:488\n kasan_report+0x142/0x170 mm/kasan/report.c:601\n f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\n __do_fault+0x131/0x450 mm/memory.c:4376\n do_shared_fault mm/memory.c:4798 [inline]\n do_fault mm/memory.c:4872 [inline]\n do_pte_missing mm/memory.c:3745 [inline]\n handle_pte_fault mm/memory.c:5144 [inline]\n __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285\n handle_mm_fault+0x27e/0x770 mm/memory.c:5450\n do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]\n handle_page_fault arch/x86/mm/fault.c:1507 [inline]\n exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563\n asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570\n\nThe root cause is: in f2fs_filemap_fault(), vmf->vma may be not alive after\nfilemap_fault(), so it may cause use-after-free issue when accessing\nvmf->vma->vm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags\nin separated temporary variable for tracepoint use."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8.2", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.9", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:29:21.725Z"}}}, "cveMetadata": {"cveId": "CVE-2024-27070", "state": "PUBLISHED", "dateUpdated": "2026-08-05T11:29:21.725Z", "dateReserved": "2024-02-19T14:20:24.216Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-01T13:04:26.824Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/f2fs/file.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "897761d16564e899faecb9381b4818858705081f", "status": "affected", "version": "b43c3050d21196e5e7024872e3048dba83e31751", "versionType": "git"}, {"lessThan": "8186e16a766d709a08f188d2f4e84098f364bea1", "status": "affected", "version": "87f3afd366f7c668be0269efda8a89741a3ea6b3", "versionType": "git"}, {"lessThan": "eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064", "status": "affected", "version": "87f3afd366f7c668be0269efda8a89741a3ea6b3", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/f2fs/file.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.8.*", "status": "unaffected", "version": "6.8.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "543A75FF-25B8-4046-A514-1EA8EDD87AB1", "versionEndExcluding": "6.8.2", "versionStartIncluding": "6.8", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid use-after-free issue in f2fs_filemap_fault\n\nsyzbot reports a f2fs bug as below:\n\nBUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\nRead of size 8 at addr ffff88807bb22680 by task syz-executor184/5058\n\nCPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x163/0x540 mm/kasan/report.c:488\n kasan_report+0x142/0x170 mm/kasan/report.c:601\n f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\n __do_fault+0x131/0x450 mm/memory.c:4376\n do_shared_fault mm/memory.c:4798 [inline]\n do_fault mm/memory.c:4872 [inline]\n do_pte_missing mm/memory.c:3745 [inline]\n handle_pte_fault mm/memory.c:5144 [inline]\n __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285\n handle_mm_fault+0x27e/0x770 mm/memory.c:5450\n do_user_addr_fault arch/x86/mm/fault.c:1364 [inline]\n handle_page_fault arch/x86/mm/fault.c:1507 [inline]\n exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563\n asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570\n\nThe root cause is: in f2fs_filemap_fault(), vmf->vma may be not alive after\nfilemap_fault(), so it may cause use-after-free issue when accessing\nvmf->vma->vm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags\nin separated temporary variable for tracepoint use."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: f2fs: soluci\u00f3n para evitar el problema de use-after-free en f2fs_filemap_fault syzbot informa un error de f2fs como se muestra a continuaci\u00f3n: ERROR: KASAN: slab-use-after-free en f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88807bb22680 por tarea syz-executor184/5058 CPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0 Nombre de hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 17/11/2023 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/ report.c:377 [en l\u00ednea] print_report+0x163/0x540 mm/kasan/report.c:488 kasan_report+0x142/0x170 mm/kasan/report.c:601 f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49 __do_fault+0x131/0x450 mm/memory.c:4376 do_shared_fault mm/memory.c:4798 [en l\u00ednea] do_fault mm/memory.c:4872 [en l\u00ednea] do_pte_missing mm/memory.c:3745 [en l\u00ednea] handle_pte_fault mm/memory. c:5144 [en l\u00ednea] __handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285 handle_mm_fault+0x27e/0x770 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [en l\u00ednea] handle_page_fault arch/x86/ mm/fault.c:1507 [en l\u00ednea] exc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 La causa ra\u00edz es: en f2fs_filemap_fault(), es posible que vmf-&gt;vma no est\u00e9 activo despu\u00e9s de filemap_fault(), por lo que puede causar un problema de use-after-free al acceder a vmf-&gt;vma-&gt;vm_flags en trace_f2fs_filemap_fault(). Por lo tanto, debe mantener vm_flags en una variable temporal separada para su uso en puntos de seguimiento."}], "id": "CVE-2024-27070", "lastModified": "2026-08-04T11:17:40.583", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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-2024-27070", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-05-28T16:13:45.773958Z", "version": "2.0.3"}}]}, "published": "2024-05-01T13:15:51.037", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/897761d16564e899faecb9381b4818858705081f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8186e16a766d709a08f188d2f4e84098f364bea1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/eb70d5a6c932d9d23f4bb3e7b83782c21ac4b064"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: f2fs: fix to avoid use-after-free issue in f2fs_filemap_fault", "id": "2278511", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2278511"}, "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:\nf2fs: fix to avoid use-after-free issue in f2fs_filemap_fault\nsyzbot reports a f2fs bug as below:\nBUG: KASAN: slab-use-after-free in f2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\nRead of size 8 at addr ffff88807bb22680 by task syz-executor184/5058\nCPU: 0 PID: 5058 Comm: syz-executor184 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023\nCall Trace:\n<TASK>\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106\nprint_address_description mm/kasan/report.c:377 [inline]\nprint_report+0x163/0x540 mm/kasan/report.c:488\nkasan_report+0x142/0x170 mm/kasan/report.c:601\nf2fs_filemap_fault+0xd1/0x2c0 fs/f2fs/file.c:49\n__do_fault+0x131/0x450 mm/memory.c:4376\ndo_shared_fault mm/memory.c:4798 [inline]\ndo_fault mm/memory.c:4872 [inline]\ndo_pte_missing mm/memory.c:3745 [inline]\nhandle_pte_fault mm/memory.c:5144 [inline]\n__handle_mm_fault+0x23b7/0x72b0 mm/memory.c:5285\nhandle_mm_fault+0x27e/0x770 mm/memory.c:5450\ndo_user_addr_fault arch/x86/mm/fault.c:1364 [inline]\nhandle_page_fault arch/x86/mm/fault.c:1507 [inline]\nexc_page_fault+0x456/0x870 arch/x86/mm/fault.c:1563\nasm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570\nThe root cause is: in f2fs_filemap_fault(), vmf->vma may be not alive after\nfilemap_fault(), so it may cause use-after-free issue when accessing\nvmf->vma->vm_flags in trace_f2fs_filemap_fault(). So it needs to keep vm_flags\nin separated temporary variable for tracepoint use."], "name": "CVE-2024-27070", "package_state": [{"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": "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": "2024-05-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-27070\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-27070\nhttps://lore.kernel.org/linux-cve-announce/2024050133-CVE-2024-27070-a43e@gregkh/T"], "threat_severity": "Moderate"}

{}