CVE-2022-48726

{"id": "CVE-2022-48726", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2024-06-20T12:15:11.077", "references": [{"url": "https://git.kernel.org/stable/c/2923948ffe0835f7114e948b35bcc42bc9b3baa1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/36e8169ec973359f671f9ec7213547059cae972e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/75c610212b9f1756b9384911d3a2c347eee8031c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ee2477e8ccd3d978eeac0dc5a981b286d9bb7b0a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ucma: Protect mc during concurrent multicast leaves\n\nPartially revert the commit mentioned in the Fixes line to make sure that\nallocation and erasing multicast struct are locked.\n\n BUG: KASAN: use-after-free in ucma_cleanup_multicast drivers/infiniband/core/ucma.c:491 [inline]\n BUG: KASAN: use-after-free in ucma_destroy_private_ctx+0x914/0xb70 drivers/infiniband/core/ucma.c:579\n Read of size 8 at addr ffff88801bb74b00 by task syz-executor.1/25529\n CPU: 0 PID: 25529 Comm: syz-executor.1 Not tainted 5.16.0-rc7-syzkaller #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\n Call Trace:\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247\n __kasan_report mm/kasan/report.c:433 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:450\n ucma_cleanup_multicast drivers/infiniband/core/ucma.c:491 [inline]\n ucma_destroy_private_ctx+0x914/0xb70 drivers/infiniband/core/ucma.c:579\n ucma_destroy_id+0x1e6/0x280 drivers/infiniband/core/ucma.c:614\n ucma_write+0x25c/0x350 drivers/infiniband/core/ucma.c:1732\n vfs_write+0x28e/0xae0 fs/read_write.c:588\n ksys_write+0x1ee/0x250 fs/read_write.c:643\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nCurrently the xarray search can touch a concurrently freeing mc as the\nxa_for_each() is not surrounded by any lock. Rather than hold the lock for\na full scan hold it only for the effected items, which is usually an empty\nlist."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/ucma: protege mc durante las salidas simult\u00e1neas de multidifusi\u00f3n. Revierta parcialmente la confirmaci\u00f3n mencionada en la l\u00ednea Correcciones para asegurarse de que la asignaci\u00f3n y el borrado de la estructura de multidifusi\u00f3n est\u00e9n bloqueados. ERROR: KASAN: use-after-free en ucma_cleanup_multicast drivers/infiniband/core/ucma.c:491 [en l\u00ednea] ERROR: KASAN: use-after-free en ucma_destroy_private_ctx+0x914/0xb70 drivers/infiniband/core/ucma.c: 579 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88801bb74b00 mediante la tarea syz-executor.1/25529 CPU: 0 PID: 25529 Comm: syz-executor.1 No contaminado 5.16.0-rc7-syzkaller #0 Nombre de hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan /report.c:247 __kasan_report mm/kasan/report.c:433 [en l\u00ednea] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 ucma_cleanup_multicast drivers/infiniband/core/ucma.c:491 [en l\u00ednea] ucma_destroy_private_ctx+0x914/0xb70 controladores/infiniband/core/ucma.c:579 ucma_destroy_id+0x1e6/0x280 controladores/infiniband/core/ucma.c:614 ucma_write+0x25c/0x350 controladores/infiniband/core/ucma.c:1732 vfs_write+ 0x28e/0xae0 fs/read_write.c:588 ksys_write+0x1ee/0x250 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x35/0xb0 arch/x86/entry/common. c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae Actualmente, la b\u00fasqueda de xarray puede tocar un mc que se libera simult\u00e1neamente ya que xa_for_each() no est\u00e1 rodeado por ning\u00fan candado. En lugar de mantener el bloqueo durante un escaneo completo, mant\u00e9ngalo solo para los elementos afectados, que generalmente son una lista vac\u00eda."}], "lastModified": "2024-09-18T16:09:15.723", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3E812CCF-4A89-422A-B105-BAD11567643C", "versionEndExcluding": "5.10.99", "versionStartIncluding": "5.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "74528AA6-B524-4C3F-B188-1194235FE47D", "versionEndExcluding": "5.15.22", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0623892A-E3E4-44E6-8A5E-39A0B47AF782", "versionEndExcluding": "5.16.8", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E6E34B23-78B4-4516-9BD8-61B33F4AC49A"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}