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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix data corruption in dsync block recovery for small block sizes\n\nThe helper function nilfs_recovery_copy_block() of\nnilfs_recovery_dsync_blocks(), which recovers data from logs created by\ndata sync writes during a mount after an unclean shutdown, incorrectly\ncalculates the on-page offset when copying repair data to the file's page\ncache. In environments where the block size is smaller than the page\nsize, this flaw can cause data corruption and leak uninitialized memory\nbytes during the recovery process.\n\nFix these issues by correcting this byte offset calculation on the page."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: nilfs2: corrige la corrupci\u00f3n de datos en la recuperaci\u00f3n de bloques dsync para tama\u00f1os de bloques peque\u00f1os La funci\u00f3n auxiliar nilfs_recovery_copy_block() de nilfs_recovery_dsync_blocks(), que recupera datos de los registros creados por escrituras de sincronizaci\u00f3n de datos durante un montaje despu\u00e9s un apagado incorrecto calcula incorrectamente el desplazamiento en la p\u00e1gina al copiar los datos de reparaci\u00f3n en la memoria cach\u00e9 de la p\u00e1gina del archivo. En entornos donde el tama\u00f1o del bloque es menor que el tama\u00f1o de la p\u00e1gina, esta falla puede causar corrupci\u00f3n de datos y p\u00e9rdida de bytes de memoria no inicializados durante el proceso de recuperaci\u00f3n. Solucione estos problemas corrigiendo este c\u00e1lculo de desplazamiento de bytes en la p\u00e1gina."}], "id": "CVE-2024-26697", "lastModified": "2024-11-05T10:15:42.287", "metrics": {}, "published": "2024-04-03T15:15:52.880", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/120f7fa2008e3bd8b7680b4ab5df942decf60fd5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2000016bab499074e6248ea85aeea7dd762355d9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e1480538ef60bfee5473dfe02b1ecbaf1a4aa0d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/364a66be2abdcd4fd426ffa44d9b8f40aafb3caa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5278c3eb6bf5896417572b52adb6be9d26e92f65"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/67b8bcbaed4777871bb0dcc888fb02a614a98ab1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c9c68d64fd3284f7097ed6ae057c8441f39fcd3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6efe6dbaaf504f5b3f8a5c3f711fe54e7dda0ba"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: nilfs2: fix data corruption in dsync block recovery for small block sizes", "id": "2273119", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273119"}, "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"}, "cwe": "CWE-99", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnilfs2: fix data corruption in dsync block recovery for small block sizes\nThe helper function nilfs_recovery_copy_block() of\nnilfs_recovery_dsync_blocks(), which recovers data from logs created by\ndata sync writes during a mount after an unclean shutdown, incorrectly\ncalculates the on-page offset when copying repair data to the file's page\ncache. In environments where the block size is smaller than the page\nsize, this flaw can cause data corruption and leak uninitialized memory\nbytes during the recovery process.\nFix these issues by correcting this byte offset calculation on the page.", "A flaw was found in the Linux kernel, which affects the NILFS2 file system. This issue involves data corruption during dsync block recovery operations when using small block sizes, possibly leading to unexpected data loss or corruption."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-26697", "package_state": [{"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": "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": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26697\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26697\nhttps://lore.kernel.org/linux-cve-announce/2024040338-CVE-2024-26697-9521@gregkh/T"], "statement": "Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.", "threat_severity": "Moderate", "upstream_fix": "kernel 4.19.307, kernel 5.4.269, kernel 5.10.210, kernel 5.15.149, kernel 6.1.79, kernel 6.6.18, kernel 6.7.6, kernel 6.8"}