CVE-2026-74487
CVE CVE-2026-74487EUVD EUVD-2026-59680Published 2026-08-15T12:27:18.000ZLast changed 2026-08-17T05:20:21.000Z
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 7.1.8; 948b701a607f123df92ed29084413e5dd8cda2ed <fdc1d702bf3001586221fa07e598e876a0a854c5; 948b701a607f123df92ed29084413e5dd8cda2ed <3b522487a3a9162b1b519eefde7998d103e3e07b; patch: 7.2; patch: 6.18.44; 4.8; 948b701a607f123df92ed29084413e5dd8cda2ed <db1856ea9196cf6e015d12199a34c0b9313c7bfa; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
Does this concern one of your customers?
This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.
Try it for 28 daysPatchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.