{"id":"CVE-2026-97551","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: initialise args->total for parent pointer updates\n\nxfs_parent_da_args_init() builds an xfs_da_args from a zeroed\nxfs_parent_args (kmem_cache_zalloc), leaving args-…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: initialise args->total for parent pointer updates\n\nxfs_parent_da_args_init() builds an xfs_da_args from a zeroed\nxfs_parent_args (kmem_cache_zalloc), leaving args-…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= b7c62d90c12c6cc86f10b8a62cefe0029374b6ff < 9ad85bce62cadfdf4242f6e6bbff2a52e51d30f1","Linux >= b7c62d90c12c6cc86f10b8a62cefe0029374b6ff < c66e138af626cad4210da449996ae9e07ee63add","Linux >= b7c62d90c12c6cc86f10b8a62cefe0029374b6ff < ac9032882d673dd6679e1d873a2dc0131a1aeb43","Linux >= b7c62d90c12c6cc86f10b8a62cefe0029374b6ff < 8e4ebb6afaa34bd2e8ce52da231003d24111c2d6","Linux 6.10"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:05.530","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97551","references":[{"url":"https://git.kernel.org/stable/c/8e4ebb6afaa34bd2e8ce52da231003d24111c2d6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9ad85bce62cadfdf4242f6e6bbff2a52e51d30f1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ac9032882d673dd6679e1d873a2dc0131a1aeb43","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c66e138af626cad4210da449996ae9e07ee63add","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97551.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97551"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541303"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97551"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97551"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97551.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-25T11:06:38.918Z","epss":0.002,"epssPercentile":0.09781,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-191"],"slug":"CVE-2026-97551","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nxfs: initialise args->total for parent pointer updates\n\nxfs_parent_da_args_init() builds an xfs_da_args from a zeroed\nxfs_parent_args (kmem_cache_zalloc), leaving args->total == 0.\nxfs_da_grow_inode_int() treats that field as a running block reservation\nand subtracts from it; because it is an xfs_extlen_t (uint32_t), the\nfirst attr-fork growth wraps it to ~0U.  That defeats the free-space\ncheck in xfs_alloc_space_available(), and when it coincides with an AG\nthat has exactly zero available blocks the allocation is clamped to\nmaxlen 0 and returns -ENOSPC, which xfs_defer_finish_noroll() escalates\nto a filesystem shutdown.\n\nSet args->total the way the log recovery path does\n(xfs_attri_recover_work(), xfs_attr_item.c:706), in the add and replace\npaths that can grow the fork.  Removals and lookups never grow it, so\nthey leave the field alone, matching that switch.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97551.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212404,"id":"CVE-2026-97551","ts":1790668181864,"field":"cvss","old":null,"new":"5.5"},{"seq":212403,"id":"CVE-2026-97551","ts":1790668181864,"field":"severity","old":"none","new":"medium"}]}