CVE-2023-52848

{"id": "CVE-2023-52848", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "published": "2024-05-21T16:15:21.947", "references": [{"url": "https://git.kernel.org/stable/c/10b2a6c0dade67b5a2b2d17fb75c457ea1985fad", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a4639380bbe66172df329f8b54aa7d2e943f0f64", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/eb42e1862aa7934c2c21890097ce4993c5e0d192", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/10b2a6c0dade67b5a2b2d17fb75c457ea1985fad", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/a4639380bbe66172df329f8b54aa7d2e943f0f64", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://git.kernel.org/stable/c/eb42e1862aa7934c2c21890097ce4993c5e0d192", "tags": ["Patch"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to drop meta_inode's page cache in f2fs_put_super()\n\nsyzbot reports a kernel bug as below:\n\nF2FS-fs (loop1): detect filesystem reference count leak during umount, type: 10, count: 1\nkernel BUG at fs/f2fs/super.c:1639!\nCPU: 0 PID: 15451 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-09338-ge0152e7481c6 #0\nRIP: 0010:f2fs_put_super+0xce1/0xed0 fs/f2fs/super.c:1639\nCall Trace:\n generic_shutdown_super+0x161/0x3c0 fs/super.c:693\n kill_block_super+0x3b/0x70 fs/super.c:1646\n kill_f2fs_super+0x2b7/0x3d0 fs/f2fs/super.c:4879\n deactivate_locked_super+0x9a/0x170 fs/super.c:481\n deactivate_super+0xde/0x100 fs/super.c:514\n cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254\n task_work_run+0x14d/0x240 kernel/task_work.c:179\n resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:171 [inline]\n exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204\n __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]\n syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296\n do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIn f2fs_put_super(), it tries to do sanity check on dirty and IO\nreference count of f2fs, once there is any reference count leak,\nit will trigger panic.\n\nThe root case is, during f2fs_put_super(), if there is any IO error\nin f2fs_wait_on_all_pages(), we missed to truncate meta_inode's page\ncache later, result in panic, fix this case."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: f2fs: correcci\u00f3n para eliminar el cach\u00e9 de la p\u00e1gina de meta_inode en f2fs_put_super() syzbot informa un error en el kernel como se muestra a continuaci\u00f3n: F2FS-fs (loop1): detecta p\u00e9rdida del recuento de referencias del sistema de archivos durante el desmontaje, escriba: 10 , recuento: \u00a11 BUG del kernel en fs/f2fs/super.c:1639! CPU: 0 PID: 15451 Comm: syz-executor.1 No contaminado 6.5.0-syzkaller-09338-ge0152e7481c6 #0 RIP: 0010:f2fs_put_super+0xce1/0xed0 fs/f2fs/super.c:1639 Seguimiento de llamadas: generic_shutdown_super+0x161 /0x3c0 fs/super.c:693 kill_block_super+0x3b/0x70 fs/super.c:1646 kill_f2fs_super+0x2b7/0x3d0 fs/f2fs/super.c:4879 deactivate_locked_super+0x9a/0x170 fs/super.c:481 deactivate_super+0xde /0x100 fs/super.c:514 cleanup_mnt+0x222/0x3d0 fs/namespace.c:1254 task_work_run+0x14d/0x240 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [en l\u00ednea] exit_to_user_mode_loop kernel/entry /common.c:171 [en l\u00ednea] exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [en l\u00ednea] syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296 do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86 Entry_SYSCALL_64_after_hwframe+0x63/0xcd En f2fs_put_super(), intenta realizar una verificaci\u00f3n de cordura en el recuento de referencias sucias y de IO de f2fs, una vez que hay alguna fuga en el recuento de referencias, provocar\u00e1 p\u00e1nico. El caso ra\u00edz es que, durante f2fs_put_super(), si hay alg\u00fan error de IO en f2fs_wait_on_all_pages(), no pudimos truncar el cach\u00e9 de la p\u00e1gina de meta_inode m\u00e1s tarde, lo que gener\u00f3 p\u00e1nico, solucionemos este caso."}], "lastModified": "2024-12-31T20:02:14.890", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "87C16A4D-F50C-48AD-A389-36C557A9EEC7", "versionEndExcluding": "6.5.12", "versionStartIncluding": "6.4.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4CBFF885-A4D3-4F21-B6FD-4D770034C048", "versionEndExcluding": "6.6.2", "versionStartIncluding": "6.6"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}