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.
from 948b701a607f123df92ed29084413e5dd8cda2ed before 7873f987213695e3564c8c259e6db283e4739472; 948b701a607f123df92ed29084413e5dd8cda2ed builds before 13efc628fdf641d901bdba07caa1c558e1bed046; from 948b701a607f123df92ed29084413e5dd8cda2ed before f1cf67f6be0babc73afa4ee0e27bdedffeeeb095; from 948b701a607f123df92ed29084413e5dd8cda2ed before dd9ba32169e73a3c3ba595cf1de1f4c69ceafb3c; from 948b701a607f123df92ed29084413e5dd8cda2ed before a50296cca2a1db9d8d21051e7d50f0cf3a4b7ec8; from 948b701a607f123df92ed29084413e5dd8cda2ed before fdc1d702bf3001586221fa07e598e876a0a854c5; 948b701a607f123df92ed29084413e5dd8cda2ed builds before 3b522487a3a9162b1b519eefde7998d103e3e07b; from 948b701a607f123df92ed29084413e5dd8cda2ed before db1856ea9196cf6e015d12199a34c0b9313c7bfa
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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