Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass Export anon_inode_make_secure_inode() to allow KVM guest_memfd to create anonymous inodes with proper security context. This replaces the current pattern of calling alloc_anon_inode() followed by inode_init_security_anon() for creating security context manually. This change also fixes a security regression in secretmem where the S_PRIVATE flag was not cleared after alloc_anon_inode(), causing LSM/SELinux checks to be bypassed for secretmem file descriptors. As guest_memfd currently resides in the KVM module, we need to export this symbol for use outside the core kernel. In the future, guest_memfd might be moved to core-mm, at which point the symbols no longer would have to be exported. When/if that happens is still unclear.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2bfe15c5261212130f1a71f32a300bcf426443d4 before 66d29d757c968d2bee9124816da5d718eb352959; affected 2bfe15c5261212130f1a71f32a300bcf426443d4 before e3eed01347721cd7a8819568161c91d538fbf229; affected 2bfe15c5261212130f1a71f32a300bcf426443d4 before f94c422157f3e43dd31990567b3e5d54b3e5b32b; affected 2bfe15c5261212130f1a71f32a300bcf426443d4 before 6ca45ea48530332a4ba09595767bd26d3232743b; affected 2bfe15c5261212130f1a71f32a300bcf426443d4 before cbe4134ea4bc493239786220bd69cb8a13493190 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.1.146 through 6.1.*; unaffected 6.6.97 through 6.6.*; unaffected 6.12.37 through 6.12.*; unaffected 6.15.6 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/66d29d757c968d2bee9124816da5d718eb352959
- https://git.kernel.org/stable/c/e3eed01347721cd7a8819568161c91d538fbf229
- https://git.kernel.org/stable/c/f94c422157f3e43dd31990567b3e5d54b3e5b32b
- https://git.kernel.org/stable/c/6ca45ea48530332a4ba09595767bd26d3232743b
- https://git.kernel.org/stable/c/cbe4134ea4bc493239786220bd69cb8a13493190
ADP enrichment
No English description supplied.