CVE-2025-68239 | THREATINT

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.

PUBLISHED Reserved 2025-12-16 | Published 2025-12-16 | Updated 2025-12-16 | Assigner Linux

Product status

Default status

unaffected

e7850f4d844e0acfac7e570af611d89deade3146 (git) before e785f552ab04dbca01d31f0334f4561240b04459

affected

e7850f4d844e0acfac7e570af611d89deade3146 (git) before 90f601b497d76f40fa66795c3ecf625b6aced9fd

affected

467a50d5db7deaf656e18a1f633be9ecd94b393a (git)

affected

4a8b4124ea4156ca52918b66c750a69c6d932aa5 (git)

affected

3fe116e33a855bbfdd32dc207e9be2a41e3ed3a6 (git)

affected

c0e0ab60d0b15469e69db93215dad009999f5a5b (git)

affected

5ab9464a2a3c538eedbb438f1802f2fd98d0953f (git)

affected

d28492be82e19fc69cc69975fc2052b37ef0c821 (git)

affected

Default status

affected

5.12

affected

Any version before 5.12

unaffected

6.17.9 (semver)

unaffected

6.18 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/e785f552ab04dbca01d31f0334f4561240b04459

git.kernel.org/...c/90f601b497d76f40fa66795c3ecf625b6aced9fd

cve.org (CVE-2025-68239)

nvd.nist.gov (CVE-2025-68239)

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