Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e7850f4d844e0acfac7e570af611d89deade3146 before 54274ff90488b6c0f595a6518faed3cf0bc966eb; affected e7850f4d844e0acfac7e570af611d89deade3146 before 480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f; affected e7850f4d844e0acfac7e570af611d89deade3146 before fbab8c08e1a6dbaef81e22d672a7647553101d16; affected e7850f4d844e0acfac7e570af611d89deade3146 before 6cce7bc7fac8471c832696720d9c8f2a976d9c54; affected e7850f4d844e0acfac7e570af611d89deade3146 before e785f552ab04dbca01d31f0334f4561240b04459; affected e7850f4d844e0acfac7e570af611d89deade3146 before 90f601b497d76f40fa66795c3ecf625b6aced9fd; affected 467a50d5db7deaf656e18a1f633be9ecd94b393a; affected 4a8b4124ea4156ca52918b66c750a69c6d932aa5; affected 3fe116e33a855bbfdd32dc207e9be2a41e3ed3a6; affected c0e0ab60d0b15469e69db93215dad009999f5a5b; affected 5ab9464a2a3c538eedbb438f1802f2fd98d0953f; affected d28492be82e19fc69cc69975fc2052b37ef0c821; affected 4.9.262 before 4.10; affected 4.14.226 before 4.15; affected 4.19.181 before 4.20; affected 5.4.106 before 5.5; affected 5.10.24 before 5.11; affected 5.11.7 before 5.12 |
| Linux / Linux | affected 5.12; unaffected 0 before 5.12; unaffected 5.15.209 through 5.15.*; unaffected 6.1.167 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.78 through 6.12.*; unaffected 6.17.9 through 6.17.*; unaffected 6.18 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/54274ff90488b6c0f595a6518faed3cf0bc966eb
- https://git.kernel.org/stable/c/480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f
- https://git.kernel.org/stable/c/fbab8c08e1a6dbaef81e22d672a7647553101d16
- https://git.kernel.org/stable/c/6cce7bc7fac8471c832696720d9c8f2a976d9c54
- https://git.kernel.org/stable/c/e785f552ab04dbca01d31f0334f4561240b04459
- https://git.kernel.org/stable/c/90f601b497d76f40fa66795c3ecf625b6aced9fd
ADP enrichment
No English description supplied.