CVE-2026-45880

PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails

3Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackepss 0.2%

probabilidad de explotación

0.2%top 95% de las CVE

explotación observada

noninguna fuente lo reporta

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().

Productos afectados

Linux · Linux

Referencias

https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38 https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3 https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40 https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e