PT-2026-43747 · Linux+3 · Linux+129

Published 2026-05-27 · Updated 2026-05-29 · CVE-2026-45880

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the PCI/P2PDMA component where the p2pmem alloc mmap() function fails to invoke percpu ref put() to release the per-CPU reference of pgmap acquired after gen pool alloc owner() when vm insert page() fails. This leads to a situation where memunmap pages() hangs indefinitely during the removal of a PCI device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-45880

Affected Products

Linux

Linux-Allwinner-5.19

Linux-Aws

Linux-Aws-5.0

Linux-Aws-5.11

Linux-Aws-5.13

Linux-Aws-5.19

Linux-Aws-5.3

Linux-Aws-5.8

Linux-Aws-6.14

Linux-Aws-6.17

Linux-Aws-6.2

Linux-Aws-6.5

Linux-Aws-6.8

Linux-Aws-Fips

Linux-Azure

Linux-Azure-5.11

Linux-Azure-5.13

Linux-Azure-5.19

Linux-Azure-5.3

Linux-Azure-5.8

Linux-Azure-6.11

Linux-Azure-6.14

Linux-Azure-6.17

Linux-Azure-6.2

Linux-Azure-6.5

Linux-Azure-6.8

Linux-Azure-Edge

Linux-Azure-Fde

Linux-Azure-Fde-5.19

Linux-Azure-Fde-6.14

Linux-Azure-Fde-6.17

Linux-Azure-Fde-6.2

Linux-Azure-Fde-6.8

Linux-Azure-Fips

Linux-Azure-Nvidia

Linux-Azure-Nvidia-6.14

Linux-Bluefield

Linux-Fips

Linux-Gcp

Linux-Gcp-5.11

Linux-Gcp-5.13

Linux-Gcp-5.19

Linux-Gcp-5.3

Linux-Gcp-5.8

Linux-Gcp-6.11

Linux-Gcp-6.14

Linux-Gcp-6.17

Linux-Gcp-6.2

Linux-Gcp-6.5

Linux-Gcp-6.8

Linux-Gcp-Fips

Linux-Gke

Linux-Gke-4.15

Linux-Gkeop-5.15

Linux-Gke-5.4

Linux-Gkeop

Linux-Hwe

Linux-Hwe-5.11

Linux-Hwe-5.13

Linux-Hwe-5.19

Linux-Hwe-5.8

Linux-Hwe-6.11

Linux-Hwe-6.14

Linux-Hwe-6.17

Linux-Hwe-6.2

Linux-Hwe-6.5

Linux-Hwe-6.8

Linux-Hwe-Edge

Linux-Ibm

Linux-Ibm-6.8

Linux-Intel-5.13

Linux-Intel-Iot-Realtime

Linux-Lowlatency

Linux-Lowlatency-Hwe-5.19

Linux-Lowlatency-Hwe-6.11

Linux-Lowlatency-Hwe-6.2

Linux-Lowlatency-Hwe-6.5

Linux-Lowlatency-Hwe-6.8

Linux-Lts

Linux-Nvidia

Linux-Nvidia-6.11

Linux-Nvidia-6.17

Linux-Nvidia-6.2

Linux-Nvidia-6.5

Linux-Nvidia-6.8

Linux-Nvidia-Lowlatency

Linux-Nvidia-Tegra

Linux-Oem

Linux-Oem-5.10

Linux-Oem-5.13

Linux-Oem-5.14

Linux-Oem-5.17

Linux-Oem-5.6

Linux-Oem-6.0

Linux-Oem-6.1

Linux-Oem-6.11

Linux-Oem-6.14

Linux-Oem-6.17

Linux-Oem-6.5

Linux-Oem-6.8

Linux-Oracle

Linux-Oracle-5.0

Linux-Oracle-5.11

Linux-Oracle-5.13

Linux-Oracle-5.3

Linux-Oracle-5.8

Linux-Oracle-6.14

Linux-Oracle-6.17

Linux-Oracle-6.5

Linux-Oracle-6.8

Linux-Raspi

Linux-Raspi-Realtime

Linux-Raspi2

Linux-Realtime

Linux-Realtime-6.14

Linux-Realtime-6.17

Linux-Realtime-6.8

Linux-Riscv

Linux-Riscv-5.11

Linux-Riscv-5.19

Linux-Riscv-5.8

Linux-Riscv-6.14

Linux-Riscv-6.17

Linux-Riscv-6.5

Linux-Riscv-6.8

Linux-Starfive-5.19

Linux-Starfive-6.2

Linux-Starfive-6.5

Linux-Xilinx

References · 14

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-45880 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-45880 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45880 · Security Note
• https://ubuntu.com/security/CVE-2026-45880 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-45880 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-45880 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-45880 · Vendor Advisory
• https://git.kernel.org/linus/6220694c52a5a04102b48109e4f24e958b559bd3 · Note
• https://git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f · Note
• https://git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3 · Note
• https://git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-45880 · Note
• https://git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40 · Note
• https://git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38 · Note