Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix NULL i_assoc_inode dereference in nilfs_mdt_save_to_shadow_map The DAT inode's btree node cache (i_assoc_inode) is initialized lazily during btree operations. However, nilfs_mdt_save_to_shadow_map() assumes i_assoc_inode is already initialized when copying dirty pages to the shadow map during GC. If NILFS_IOCTL_CLEAN_SEGMENTS is called immediately after mount before any btree operation has occurred on the DAT inode, i_assoc_inode is NULL leading to a general protection fault. Fix this by calling nilfs_attach_btree_node_cache() on the DAT inode in nilfs_dat_read() at mount time, ensuring i_assoc_inode is always initialized before any GC operation can use it.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d626fcdabea2258be395a775bdbe09270e9bf73d before 6637bbcfb59df5b732a79e5ab1a74886a0b93d59; affected d05cc5395e36711edad8bdef6945f138d8a7097b before 837c7a59fb58f81b0db33848357f6a5d0d1250ad; affected e897be17a441fa637cd166fc3de1445131e57692 before 7902b1df1520a0880bcda7a3704cfacd17905a83; affected e897be17a441fa637cd166fc3de1445131e57692 before 7318e3549518ce8f14776a489d86488d80d7e2c8; affected e897be17a441fa637cd166fc3de1445131e57692 before 449ec5fc99f45974525ba9eea16b6670c45cd363; affected e897be17a441fa637cd166fc3de1445131e57692 before c36e206f302f1ddefed92d09ecbba070e1ae079e; affected e897be17a441fa637cd166fc3de1445131e57692 before 41de342278ae025c99cc8d33648773f05e306cf1; affected e897be17a441fa637cd166fc3de1445131e57692 before 97fb7afec404912d967a7d4715f37742666b3084; affected e897be17a441fa637cd166fc3de1445131e57692 before 4a4e0328edd9e9755843787d28f16dd4165f8b48; affected 6c3da8c0a35bbafe359d9166269d5590f29664de; affected 605babb979c213737618b1c837e89624e5ab11fd; affected 307d021b1a7f33048b624f7aaeaa75e3eae571f1; affected 1829b24a36ca12ca95b96d5478faeff40c17f2b6; affected 5.10.118 before 5.10.258; affected 5.15.42 before 5.15.209; affected 4.14.296 before 4.15; affected 4.19.245 before 4.20; affected 5.4.196 before 5.5; affected 5.17.10 before 5.18 |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.136 through 6.6.*; unaffected 6.12.83 through 6.12.*; unaffected 6.18.24 through 6.18.*; unaffected 6.19.14 through 6.19.*; unaffected 7.0.1 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6637bbcfb59df5b732a79e5ab1a74886a0b93d59
- https://git.kernel.org/stable/c/837c7a59fb58f81b0db33848357f6a5d0d1250ad
- https://git.kernel.org/stable/c/7902b1df1520a0880bcda7a3704cfacd17905a83
- https://git.kernel.org/stable/c/7318e3549518ce8f14776a489d86488d80d7e2c8
- https://git.kernel.org/stable/c/449ec5fc99f45974525ba9eea16b6670c45cd363
- https://git.kernel.org/stable/c/c36e206f302f1ddefed92d09ecbba070e1ae079e
- https://git.kernel.org/stable/c/41de342278ae025c99cc8d33648773f05e306cf1
- https://git.kernel.org/stable/c/97fb7afec404912d967a7d4715f37742666b3084
- https://git.kernel.org/stable/c/4a4e0328edd9e9755843787d28f16dd4165f8b48