Description
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 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
7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 to < baa42b756d183a59572f3890981a3d32b8d05d40affected7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 to < 51b7181cfbedf289ce794b6d97a1c596c309ec38affected7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 to < e19cce88ec4c4877f4ff2469099b9cf23cc3e93eaffected7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 to < a1f4dc72efc3204db95d052058d785cad7ce755faffected7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 to < 6220694c52a5a04102b48109e4f24e958b559bd3affected
Linux Linux
Default version status: affected
6.2affected0 to < 6.2unaffected6.6.128 to ≤ 6.6.*unaffected6.12.75 to ≤ 6.12.*unaffected6.18.14 to ≤ 6.18.*unaffected6.19.4 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
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 ↗