Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap() doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when trying to remove the PCI device. Fix it by adding the missed percpu_ref_put().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 before baa42b756d183a59572f3890981a3d32b8d05d40; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 before 51b7181cfbedf289ce794b6d97a1c596c309ec38; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 before e19cce88ec4c4877f4ff2469099b9cf23cc3e93e; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 before a1f4dc72efc3204db95d052058d785cad7ce755f; affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 before 6220694c52a5a04102b48109e4f24e958b559bd3 |
| Linux / Linux | affected 6.2; unaffected 0 before 6.2; unaffected 6.6.128 through 6.6.*; unaffected 6.12.75 through 6.12.*; unaffected 6.18.14 through 6.18.*; unaffected 6.19.4 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40
- https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38
- https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e
- https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f
- https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3