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Vulnerability · Published Jan 31, 2025 · Assigned by Linux

CVE-2025-21676net: fec: handle page_pool_dev_alloc_pages error

High 7.5

In plain English

A high-severity null pointer dereference in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 60.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: net: fec: handle page_pool_dev_alloc_pages error The fec_enet_update_cbd function calls page_pool_dev_alloc_pages but did not handle the case when it returned NULL. There was a WARN_ON(!new_page) but it would still proceed to use the NULL pointer and then crash. This case does seem somewhat rare but when the system is under memory pressure it can happen. One case where I can duplicate this with some frequency is when writing over a smbd share to a SATA HDD attached to an imx6q. Setting /proc/sys/vm/min_free_kbytes to higher values also seems to solve the problem for my test case. But it still seems wrong that the fec driver ignores the memory allocation error and can crash. This commit handles the allocation error by dropping the current packet.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.170-1DEBIAN-CVE-2025-21676
Debian:13linux6.12.11-1DEBIAN-CVE-2025-21676
Debian:14linux6.12.11-1DEBIAN-CVE-2025-21676
Ubuntu:24.04:LTSlinux6.8.0-62.65USN-7595-1
Ubuntu:24.04:LTSlinux6.8.0-62.65UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-aws6.8.0-1030.32USN-7595-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1030.32UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1030.32~22.04.1USN-7595-1
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1030.32~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-azure6.8.0-1030.35UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-azure6.8.0-1030.35USN-7596-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1013.13~24.04.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1013.13~24.04.1USN-7448-1
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1030.35~22.04.1USN-7596-1
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1030.35~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1018.19UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1018.19USN-7596-2
Ubuntu:24.04:LTSlinux-gcp6.8.0-1031.33USN-7595-5
Ubuntu:24.04:LTSlinux-gcp6.8.0-1031.33UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1013.13~24.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1031.33~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1031.33~22.04.1USN-7595-5
Ubuntu:24.04:LTSlinux-gke6.8.0-1026.30UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-gke6.8.0-1026.30USN-7595-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1013.15USN-7595-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1013.15UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-24.24~24.04.1USN-7445-1
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-24.24~24.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-64.67~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-ibm6.8.0-1027.27USN-7595-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1027.27UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1027.27~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-62.65.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-62.65.1USN-7595-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1012.13~24.04.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1012.13~24.04.1USN-7445-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-62.65.1~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-62.65.1~22.04.1USN-7595-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1029.32USN-7595-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1029.32UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1029.32~22.04.1USN-7595-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1029.32~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1029.32.1USN-7595-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1029.32.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1008.8UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1020.20USN-7445-1
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1020.20UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1029.29USN-7595-1
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1029.29UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-oracle6.8.0-1027.28UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-oracle6.8.0-1027.28USN-7595-4
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1027.28~22.04.1USN-7595-4
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1027.28~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-raspi6.8.0-1029.33UBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-raspi6.8.0-1029.33USN-7595-4
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-62.65~22.04.1UBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-21676
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-21676
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2025-21676

Affected products (as reported)

VendorProductVersions
Linux Linux 95698ff6177b5f1f13f251da60e7348413046ae4 – before eacdcc14f3c8d4c1447565521e792ddb3a67e08d95698ff6177b5f1f13f251da60e7348413046ae4 – before 8a0097db0544b658c159ac787319737712063a2395698ff6177b5f1f13f251da60e7348413046ae4 – before 1425cb829556398f594658512d49292f988a2ab095698ff6177b5f1f13f251da60e7348413046ae4 – before 001ba0902046cb6c352494df610718c0763e77a5
Linux Linux 6.1

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References