{"id":"CVE-2026-74487","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-74487","generatedAt":"2026-10-27T23:57:32.220Z","title":"In the Linux kernel, the following vulnerability has been resolved: binfmt_misc: restore write access when removing an entry Registering an entry with the MISC_FMT_OPEN_FILE flag opens the interpreter via open_exec() which denies write access to it for…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbinfmt_misc: restore write access when removing an entry\n\nRegistering an entry with the MISC_FMT_OPEN_FILE flag opens the\ninterpreter via open_exec() which denies write access to it for as\nlong as the entry exists. Removing the entry closes the interpreter\nfile via filp_close() but never restores write access, leaving the\ninode's i_writecount permanently negative. Opening the interpreter\nfor writing keeps failing with ETXTBSY long after the entry is gone\nuntil the inode is evicted from the inode cache.\n\nCommit 90f601b497d7 (\"binfmt_misc: restore write access before\nclosing files opened by open_exec()\") fixed the same imbalance in the\nerror path of bm_register_write() but the actual removal path has\nbeen leaking the write denial since the introduction of the flag.\n\nRestore write access in put_binfmt_handler() before closing the\ninterpreter file.","published":"2026-08-15T13:17:54.000Z","lastModified":"2026-08-23T13:16:45.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00177,"percentile":0.07158,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/13efc628fdf641d901bdba07caa1c558e1bed046","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3b522487a3a9162b1b519eefde7998d103e3e07b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7873f987213695e3564c8c259e6db283e4739472","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a50296cca2a1db9d8d21051e7d50f0cf3a4b7ec8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/db1856ea9196cf6e015d12199a34c0b9313c7bfa","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dd9ba32169e73a3c3ba595cf1de1f4c69ceafb3c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f1cf67f6be0babc73afa4ee0e27bdedffeeeb095","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fdc1d702bf3001586221fa07e598e876a0a854c5","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74487","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}