CVE-2025-68239

binfmt_misc: restore write access before closing files opened by open_exec()

Not available

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

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.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected e7850f4d844e0acfac7e570af611d89deade3146 < 54274ff90488b6c0f595a6518faed3cf0bc966eb ; affected e7850f4d844e0acfac7e570af611d89deade3146 < 480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f ; affected e7850f4d844e0acfac7e570af611d89deade3146 < fbab8c08e1a6dbaef81e22d672a7647553101d16 ; affected e7850f4d844e0acfac7e570af611d89deade3146 < 6cce7bc7fac8471c832696720d9c8f2a976d9c54 ; affected e7850f4d844e0acfac7e570af611d89deade3146 < e785f552ab04dbca01d31f0334f4561240b04459 ; affected e7850f4d844e0acfac7e570af611d89deade3146 < 90f601b497d76f40fa66795c3ecf625b6aced9fd
Linux · Linuxaffected 5.12 ; unaffected 0 < 5.12 ; unaffected 5.15.209 ≤ 5.15.* ; unaffected 6.1.167 ≤ 6.1.* ; unaffected 6.6.130 ≤ 6.6.* ; unaffected 6.12.78 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD