{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74486","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.905Z","datePublished":"2026-08-15T12:27:17.609Z","dateUpdated":"2026-08-23T12:47:25.566Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-23T12:47:25.566Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbinfmt_misc: use exe_file_deny_write_access() for the interpreter clone\n\nFor MISC_FMT_OPEN_FILE entries load_misc_binary() clones the\nregistered interpreter file and denies write access to the clone via\nplain deny_write_access(). The clone is installed as\nbprm->interpreter and later released by the exec machinery through\nexe_file_allow_write_access() which skips the i_writecount increment\nfor files with FMODE_FSNOTIFY_HSM set.\n\nThe deny and allow side can therefore come to different conclusions\nwhen pre-content watches are in play: if a pre-content watch is added\nto the interpreter after registration every subsequent exec through\nthat entry takes a write denial on the clone that is never paired\nwith a write allowance, driving the interpreter inode's i_writecount\nfurther down with each exec and leaving the interpreter unwritable\neven after the entry and all its users are gone.\n\nTake the write denial via exe_file_deny_write_access() so both sides\nof the pairing base their decision on the same file mode, and\npropagate failure instead of silently ignoring it: an interpreter\nthat is concurrently open for writing now fails the exec with\nETXTBSY, exactly like an interpreter freshly opened via open_exec()\nwould."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/binfmt_misc.c"],"versions":[{"version":"5b432413f7bbbc8b935138490a57be05c1921684","lessThan":"c65eb018c12179b5e2c7afe1f0956298576fecec","status":"affected","versionType":"git"},{"version":"bb4715098d8e340bbbdd3a874b31f89867c8067e","lessThan":"2bd860b7e752a51185960143cab9fec7bf32c84e","status":"affected","versionType":"git"},{"version":"c152be5adc0975c75cc4f50891c9072d52d60b47","lessThan":"eea4b7c7711b1e425272d23352af157f45f4c3e3","status":"affected","versionType":"git"},{"version":"bf5ed2ef5cdb7b47ce606e3d48ea6eb803b31503","lessThan":"2fdf8b07bee5ef99ec77773a6be05fbb8ee5cdb9","status":"affected","versionType":"git"},{"version":"483217fd6f7ccd98b3ed2531a54f75ed144b4499","lessThan":"f1e7ea3c8e070f19771cdaef55bbeda1359ad490","status":"affected","versionType":"git"},{"version":"0357ef03c94ef835bd44a0658b8edb672a9dbf51","lessThan":"255a758697da87a205e072e0cfc35897b8f743b1","status":"affected","versionType":"git"},{"version":"0357ef03c94ef835bd44a0658b8edb672a9dbf51","lessThan":"f0edbaf487e4653a680a7abb91c1df94cb7886aa","status":"affected","versionType":"git"},{"version":"0357ef03c94ef835bd44a0658b8edb672a9dbf51","lessThan":"fa5990ca8fd917003e526036bcc50413edb9722c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/binfmt_misc.c"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"6.18.44","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.8","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.18.44"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c65eb018c12179b5e2c7afe1f0956298576fecec"},{"url":"https://git.kernel.org/stable/c/2bd860b7e752a51185960143cab9fec7bf32c84e"},{"url":"https://git.kernel.org/stable/c/eea4b7c7711b1e425272d23352af157f45f4c3e3"},{"url":"https://git.kernel.org/stable/c/2fdf8b07bee5ef99ec77773a6be05fbb8ee5cdb9"},{"url":"https://git.kernel.org/stable/c/f1e7ea3c8e070f19771cdaef55bbeda1359ad490"},{"url":"https://git.kernel.org/stable/c/255a758697da87a205e072e0cfc35897b8f743b1"},{"url":"https://git.kernel.org/stable/c/f0edbaf487e4653a680a7abb91c1df94cb7886aa"},{"url":"https://git.kernel.org/stable/c/fa5990ca8fd917003e526036bcc50413edb9722c"}],"title":"binfmt_misc: use exe_file_deny_write_access() for the interpreter clone","x_generator":{"engine":"bippy-1.2.0"}}}}