CVE-2026-74487binfmt_misc: restore write access when removing an entry
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < 7873f987213695e3564c8c259e6db283e4739472
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < 13efc628fdf641d901bdba07caa1c558e1bed046
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < f1cf67f6be0babc73afa4ee0e27bdedffeeeb095
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < dd9ba32169e73a3c3ba595cf1de1f4c69ceafb3c
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < a50296cca2a1db9d8d21051e7d50f0cf3a4b7ec8
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < fdc1d702bf3001586221fa07e598e876a0a854c5
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < 3b522487a3a9162b1b519eefde7998d103e3e07b
- affected 948b701a607f123df92ed29084413e5dd8cda2ed – < db1856ea9196cf6e015d12199a34c0b9313c7bfa
- affected 4.8
- unaffected < 4.8
- unaffected 5.10.266 – ≤ 5.10.*
- unaffected 5.15.217 – ≤ 5.15.*
- unaffected 6.1.184 – ≤ 6.1.*
- unaffected 6.6.153 – ≤ 6.6.*
- unaffected 6.12.105 – ≤ 6.12.*
- unaffected 6.18.44 – ≤ 6.18.*
- unaffected 7.1.8 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/7873f987213695e3564c8c259e6db283e4739472 (opens in a new tab)
- https://git.kernel.org/stable/c/13efc628fdf641d901bdba07caa1c558e1bed046 (opens in a new tab)
- https://git.kernel.org/stable/c/f1cf67f6be0babc73afa4ee0e27bdedffeeeb095 (opens in a new tab)
- https://git.kernel.org/stable/c/dd9ba32169e73a3c3ba595cf1de1f4c69ceafb3c (opens in a new tab)
- https://git.kernel.org/stable/c/a50296cca2a1db9d8d21051e7d50f0cf3a4b7ec8 (opens in a new tab)
- https://git.kernel.org/stable/c/fdc1d702bf3001586221fa07e598e876a0a854c5 (opens in a new tab)
- https://git.kernel.org/stable/c/3b522487a3a9162b1b519eefde7998d103e3e07b (opens in a new tab)
- https://git.kernel.org/stable/c/db1856ea9196cf6e015d12199a34c0b9313c7bfa (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-59680 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-74487)Record last updated .