binfmt_misc: restore write access before closing files opened by open_exec()
Summary
| CVE | CVE-2025-68239 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-12-16 15:15:53 UTC |
| Updated | 2026-06-01 17:16:37 UTC |
| Description | In the Linux kernel, the following vulnerability has been resolved: binfmt_misc: restore write access before closing files opened by open_exec() bm_register_write() opens an executable file using open_exec(), which internally calls do_open_execat() and denies write access on the file to avoid modification while it is being executed. However, when an error occurs, bm_register_write() closes the file using filp_close() directly. This does not restore the write permission, which may cause subsequent write operations on the same file to fail. Fix this by calling exe_file_allow_write_access() before filp_close() to restore the write permission properly. |
Risk And Classification
EPSS: 0.000580000 probability, percentile 0.183980000 (date 2026-06-04)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 54274ff90488b6c0f595a6518faed3cf0bc966eb git | Not specified |
| CNA | Linux | Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f git | Not specified |
| CNA | Linux | Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 fbab8c08e1a6dbaef81e22d672a7647553101d16 git | Not specified |
| CNA | Linux | Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 6cce7bc7fac8471c832696720d9c8f2a976d9c54 git | Not specified |
| CNA | Linux | Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 e785f552ab04dbca01d31f0334f4561240b04459 git | Not specified |
| CNA | Linux | Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 90f601b497d76f40fa66795c3ecf625b6aced9fd git | Not specified |
| CNA | Linux | Linux | affected 467a50d5db7deaf656e18a1f633be9ecd94b393a git | Not specified |
| CNA | Linux | Linux | affected 4a8b4124ea4156ca52918b66c750a69c6d932aa5 git | Not specified |
| CNA | Linux | Linux | affected 3fe116e33a855bbfdd32dc207e9be2a41e3ed3a6 git | Not specified |
| CNA | Linux | Linux | affected c0e0ab60d0b15469e69db93215dad009999f5a5b git | Not specified |
| CNA | Linux | Linux | affected 5ab9464a2a3c538eedbb438f1802f2fd98d0953f git | Not specified |
| CNA | Linux | Linux | affected d28492be82e19fc69cc69975fc2052b37ef0c821 git | Not specified |
| CNA | Linux | Linux | affected 4.9.262 4.10 semver | Not specified |
| CNA | Linux | Linux | affected 4.14.226 4.15 semver | Not specified |
| CNA | Linux | Linux | affected 4.19.181 4.20 semver | Not specified |
| CNA | Linux | Linux | affected 5.4.106 5.5 semver | Not specified |
| CNA | Linux | Linux | affected 5.10.24 5.11 semver | Not specified |
| CNA | Linux | Linux | affected 5.11.7 5.12 semver | Not specified |
| CNA | Linux | Linux | affected 5.12 | Not specified |
| CNA | Linux | Linux | unaffected 5.12 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.167 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.130 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.78 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.17.9 6.17.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/54274ff90488b6c0f595a6518faed3cf0bc966eb | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/90f601b497d76f40fa66795c3ecf625b6aced9fd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/6cce7bc7fac8471c832696720d9c8f2a976d9c54 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e785f552ab04dbca01d31f0334f4561240b04459 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/fbab8c08e1a6dbaef81e22d672a7647553101d16 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.