Description
In the Linux kernel, the following vulnerability has been resolved: ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode There are many places that will get unhappy (and crash) when ext4_iget() returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, because the inode may not be initialized. This mechanism can be used to bypass some checks and cause panic. To solve this problem, we add a special iget flag EXT4_IGET_BAD. Only with this flag we'd be returning bad inode from ext4_iget(), otherwise we always return the error code if the inode is bad inode.(suggested by Jan Kara)
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2142dfa1de61e25b83198af0308ec7689cca25d3
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c0a738875c2e9c8c3366d792f8bf7fe508d5e5a5
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f7e6b5548f915d7aa435d0764d41eacfb49c6e09
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f725b290ed79ad61e4f721fee95a287892d8b1ad
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 488a5c2bf7543c3cd3f07a025f2e62be91599430
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023
5.4.229
5.10.163
5.15.87
6.0.18
6.1.4
6.2
References
git.kernel.org/...c/2142dfa1de61e25b83198af0308ec7689cca25d3
git.kernel.org/...c/c0a738875c2e9c8c3366d792f8bf7fe508d5e5a5
git.kernel.org/...c/f7e6b5548f915d7aa435d0764d41eacfb49c6e09
git.kernel.org/...c/f725b290ed79ad61e4f721fee95a287892d8b1ad
git.kernel.org/...c/488a5c2bf7543c3cd3f07a025f2e62be91599430
git.kernel.org/...c/63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023
