Description
In the Linux kernel, the following vulnerability has been resolved: fs: fix UAF/GPF bug in nilfs_mdt_destroy In alloc_inode, inode_init_always() could return -ENOMEM if security_inode_alloc() fails, which causes inode->i_private uninitialized. Then nilfs_is_metadata_file_inode() returns true and nilfs_free_inode() wrongly calls nilfs_mdt_destroy(), which frees the uninitialized inode->i_private and leads to crashes(e.g., UAF/GPF). Fix this by moving security_inode_alloc just prior to this_cpu_inc(nr_inodes)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d1ff475d7c83289d0a7faef346ea3bbf90818badaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c0aa76b0f17f59dd9c9d3463550a2986a1d592e4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ec2aab115eb38ac4992ea2fcc2a02fbe7af5cf48affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 70e4f70d54e0225f91814e8610477d65f33cefe4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1e555c3ed1fce4b278aaebe18a64a934cece57d8affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 64b79e632869ad3ef6c098a4731d559381da1115affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 81de80330fa6907aec32eb54c5619059e6e36452affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2a96b532098284ecf8e4849b8b9e5fc7a28bdee9affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2e488f13755ffbb60f307e991b27024716a33b29affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected4.9.331 to ≤ 4.9.*unaffected4.14.296 to ≤ 4.14.*unaffected4.19.262 to ≤ 4.19.*unaffected5.4.218 to ≤ 5.4.*unaffected5.10.148 to ≤ 5.10.*unaffected5.15.73 to ≤ 5.15.*unaffected5.19.15 to ≤ 5.19.*unaffected6.0.1 to ≤ 6.0.*unaffected6.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/d1ff475d7c83289d0a7faef346ea3bbf90818bad ↗
- https://git.kernel.org/stable/c/c0aa76b0f17f59dd9c9d3463550a2986a1d592e4 ↗
- https://git.kernel.org/stable/c/ec2aab115eb38ac4992ea2fcc2a02fbe7af5cf48 ↗
- https://git.kernel.org/stable/c/70e4f70d54e0225f91814e8610477d65f33cefe4 ↗
- https://git.kernel.org/stable/c/1e555c3ed1fce4b278aaebe18a64a934cece57d8 ↗
- https://git.kernel.org/stable/c/64b79e632869ad3ef6c098a4731d559381da1115 ↗
- https://git.kernel.org/stable/c/81de80330fa6907aec32eb54c5619059e6e36452 ↗
- https://git.kernel.org/stable/c/2a96b532098284ecf8e4849b8b9e5fc7a28bdee9 ↗
- https://git.kernel.org/stable/c/2e488f13755ffbb60f307e991b27024716a33b29 ↗