{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-53052", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-53052", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-11-19T17:19:37.067Z", "updatedAt": "2026-05-11T20:49:53.409Z", "importedAt": "2026-10-24T01:57:20.494Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "io_uring/rw: fix missing NOWAIT check for O_DIRECT start write", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/rw: fix missing NOWAIT check for O_DIRECT start write\n\nWhen io_uring starts a write, it'll call kiocb_start_write() to bump the\nsuper block rwsem, preventing any freezes from happening while that\nwrite is in-flight. The freeze side will grab that rwsem for writing,\nexcluding any new writers from happening and waiting for existing writes\nto finish. But io_uring unconditionally uses kiocb_start_write(), which\nwill block if someone is currently attempting to freeze the mount point.\nThis causes a deadlock where freeze is waiting for previous writes to\ncomplete, but the previous writes cannot complete, as the task that is\nsupposed to complete them is blocked waiting on starting a new write.\nThis results in the following stuck trace showing that dependency with\nthe write blocked starting a new write:\n\ntask:fio state:D stack:0 pid:886 tgid:886 ppid:876\nCall trace:\n __switch_to+0x1d8/0x348\n __schedule+0x8e8/0x2248\n schedule+0x110/0x3f0\n percpu_rwsem_wait+0x1e8/0x3f8\n __percpu_down_read+0xe8/0x500\n io_write+0xbb8/0xff8\n io_issue_sqe+0x10c/0x1020\n io_submit_sqes+0x614/0x2110\n __arm64_sys_io_uring_enter+0x524/0x1038\n invoke_syscall+0x74/0x268\n el0_svc_common.constprop.0+0x160/0x238\n do_el0_svc+0x44/0x60\n el0_svc+0x44/0xb0\n el0t_64_sync_handler+0x118/0x128\n el0t_64_sync+0x168/0x170\nINFO: task fsfreeze:7364 blocked for more than 15 seconds.\n Not tainted 6.12.0-rc5-00063-g76aaf945701c #7963\n\nwith the attempting freezer stuck trying to grab the rwsem:\n\ntask:fsfreeze state:D stack:0 pid:7364 tgid:7364 ppid:995\nCall trace:\n __switch_to+0x1d8/0x348\n __schedule+0x8e8/0x2248\n schedule+0x110/0x3f0\n percpu_down_write+0x2b0/0x680\n freeze_super+0x248/0x8a8\n do_vfs_ioctl+0x149c/0x1b18\n __arm64_sys_ioctl+0xd0/0x1a0\n invoke_syscall+0x74/0x268\n el0_svc_common.constprop.0+0x160/0x238\n do_el0_svc+0x44/0x60\n el0_svc+0x44/0xb0\n el0t_64_sync_handler+0x118/0x128\n el0t_64_sync+0x168/0x170\n\nFix this by having the io_uring side honor IOCB_NOWAIT, and only attempt a\nblocking grab of the super block rwsem if it isn't set. For normal issue\nwhere IOCB_NOWAIT would always be set, this returns -EAGAIN which will\nhave io_uring core issue a blocking attempt of the write. That will in\nturn also get completions run, ensuring forward progress.\n\nSince freezing requires CAP_SYS_ADMIN in the first place, this isn't\nsomething that can be triggered by a regular user.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "status": "affected", "versionType": "git", "lessThan": "485d9232112b17f389b29497ff41b97b3189546b" }, { "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "status": "affected", "versionType": "git", "lessThan": "4e24041ba86d50aaa4c792ae2c88ed01b3d96243" }, { "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "status": "affected", "versionType": "git", "lessThan": "9e8debb8e51354b201db494689198078ec2c1e75" }, { "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "status": "affected", "versionType": "git", "lessThan": "003d2996964c03dfd34860500428f4cdf1f5879e" }, { "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "status": "affected", "versionType": "git", "lessThan": "26b8c48f369b7591f5679e0b90612f4862a32929" }, { "version": "2b188cc1bb857a9d4701ae59aa7768b5124e262e", "status": "affected", "versionType": "git", "lessThan": "1d60d74e852647255bd8e76f5a22dc42531e4389" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.1" }, { "version": "5.10.230", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.172", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.116", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.60", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.11.7", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.11.*" }, { "version": "6.12", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }