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CVE-2026-74487: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    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 as long as the entry exists. Removing the entry closes the interpreter file via filp_close() but never restores write access, leaving the inode's i_writecount permanently negative. Opening the interpreter for writing keeps failing with ETXTBSY long after the entry is gone until the inode is evicted from the inode cache. Commit 90f601b497d7 ("binfmt_misc: restore write access before closing files opened by open_exec()") fixed the same imbalance in the error path of bm_register_write() but the actual removal path has been leaking the write denial since the introduction of the flag. Restore write access in put_binfmt_handler() before closing the interpreter file.

    Засегнати продукти

    • Linux Linux: 948b701a607f123df92ed29084413e5dd8cda2ed преди 7873f987213695e3564c8c259e6db283e4739472; 948b701a607f123df92ed29084413e5dd8cda2ed преди 13efc628fdf641d901bdba07caa1c558e1bed046; 948b701a607f123df92ed29084413e5dd8cda2ed преди f1cf67f6be0babc73afa4ee0e27bdedffeeeb095; 948b701a607f123df92ed29084413e5dd8cda2ed преди dd9ba32169e73a3c3ba595cf1de1f4c69ceafb3c; 948b701a607f123df92ed29084413e5dd8cda2ed преди a50296cca2a1db9d8d21051e7d50f0cf3a4b7ec8; 948b701a607f123df92ed29084413e5dd8cda2ed преди fdc1d702bf3001586221fa07e598e876a0a854c5; 948b701a607f123df92ed29084413e5dd8cda2ed преди 3b522487a3a9162b1b519eefde7998d103e3e07b; 948b701a607f123df92ed29084413e5dd8cda2ed преди db1856ea9196cf6e015d12199a34c0b9313c7bfa
    • Linux Linux: 4.8; преди 4.8; 5.10.266 до 5.10.*; 5.15.217 до 5.15.*; 6.1.184 до 6.1.*; 6.6.153 до 6.6.*; 6.12.105 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

    История

    • 15 август 2026 Публикувано

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    CVE-2026-74487: Linux | freedomonline.bg