{"apiVersion":"1.0","identifier":"CVE-2026-74486","description":"In the Linux kernel, the following vulnerability has been resolved: binfmt_misc: use exe_file_deny_write_access() for the interpreter clone For MISC_FMT_OPEN_FILE entries load_misc_binary() clones the registered interpreter file and denies write access to the clone via plain deny_write_access(). The clone is installed as bprm->interpreter and later released by the exec machinery through exe_file_allow_write_access() which skips the i_writecount increment for files with FMODE_FSNOTIFY_HSM set. The deny and allow side can therefore come to different conclusions when pre-content watches are in play: if a pre-content watch is added to the interpreter after registration every subsequent exec through that entry takes a write denial on the clone that is never paired with a write allowance, driving the interpreter inode-s i_writecount further down with each exec and leaving the interpreter unwritable even after the entry and all its users are gone. Take the write denial via exe_file_deny_write_access() so both sides of the pairing base their decision on the same file mode, and propagate failure instead of silently ignoring it: an interpreter that is concurrently open for writing now fails the exec with ETXTBSY, exactly like an interpreter freshly opened via open_exec() would.","publishedAt":"2026-08-15T13:17:53","lastModifiedAt":"2026-08-23T13:16:44","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74486","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00177,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74486","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74486","en":"https://www.redsauce.net/en/cves/CVE-2026-74486","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74486","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74486","de":"https://www.redsauce.net/de/cves/CVE-2026-74486","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74486","el":"https://www.redsauce.net/el/cves/CVE-2026-74486"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74486"}}