Skip to content
OpenAdvisories
High · 7.8 CVE-2025-21680 EUVD-2025-2629GHSA-8qfw-mmqm-63gq

pktgen: Avoid out-of-bounds access in get_imix_entries

Published Jan 31, 2025 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: kernel Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-6.8 Package: linux-aws-fips Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-6.8 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-6.8 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-6.8 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-6.8 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lowlatency-hwe-6.8 Package: linux-nvidia Package: linux-nvidia-6.11 Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-6.8 Package: linux-nvidia-lowlatency Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.8 Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-riscv-6.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Azure Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

pktgen: Avoid out-of-bounds access in get_imix_entries

Passing a sufficient amount of imix entries leads to invalid access to the
pkt_dev->imix_entries array because of the incorrect boundary check.

UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24
index 20 is out of range for type 'imix_pkt [20]'
CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
Call Trace:
<TASK>
dump_stack_lvl lib/dump_stack.c:117
__ubsan_handle_out_of_bounds lib/ubsan.c:429
get_imix_entries net/core/pktgen.c:874
pktgen_if_write net/core/pktgen.c:1063
pde_write fs/proc/inode.c:334
proc_reg_write fs/proc/inode.c:346
vfs_write fs/read_write.c:593
ksys_write fs/read_write.c:644
do_syscall_64 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130

Found by Linux Verification Center (linuxtesting.org) with SVACE.

[ fp: allow to fill the array completely; minor changelog cleanup ]

Affected products

VendorProductAffectedFixed
Linux Linux 5.15 5.15.177

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.12.11-1 —
Debian 13 linux 6.12.11-1 —
Debian 12 linux 6.1.128-1 DSA-5860-1
Debian 11 linux-6.1 6.1.128-1~deb11u1 DLA-4076-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1062.64 —
Ubuntu 24.04 LTS linux 6.8.0-62.65 USN-7595-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1030.32 USN-7595-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1030.35 USN-7596-1
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1018.19 USN-7596-2
Ubuntu 24.04 LTS linux-gcp 6.8.0-1031.33 USN-7595-5
Ubuntu 24.04 LTS linux-gcp-6.11 +1 6.11.0-1013.13~24.04.1 USN-7448-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1026.30 USN-7595-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1013.15 USN-7595-1
Ubuntu 24.04 LTS linux-hwe-6.11 6.11.0-24.24~24.04.1 USN-7445-1
Ubuntu 24.04 LTS linux-ibm 6.8.0-1027.27 USN-7595-1
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-62.65.1 USN-7595-1
Ubuntu 24.04 LTS linux-lowlatency-hwe-6.11 6.11.0-1012.13~24.04.1 USN-7445-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1029.32 USN-7595-1
Ubuntu 24.04 LTS linux-nvidia-6.11 6.11.0-1007.7 —
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1029.32.1 USN-7595-1
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1008.8 —
Ubuntu 24.04 LTS linux-oem-6.11 6.11.0-1020.20 USN-7445-1
Ubuntu 24.04 LTS linux-oem-6.8 6.8.0-1029.29 USN-7595-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1027.28 USN-7595-4
Ubuntu 24.04 LTS linux-raspi 6.8.0-1029.33 USN-7595-4
Ubuntu 24.04 LTS linux-riscv +2 No fix yet —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1017.18 —
Ubuntu 22.04 LTS linux +1 5.15.0-135.146 USN-7387-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1080.87 USN-7387-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1030.32~22.04.1 USN-7595-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1084.93 USN-7387-1
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1030.35~22.04.1 USN-7596-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1084.93.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1079.88 USN-7387-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1031.33~22.04.1 USN-7595-5
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1077.83 USN-7387-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1062.70 USN-7387-1
Ubuntu 22.04 LTS linux-hwe-6.8 6.8.0-64.67~22.04.1 USN-7653-1
Ubuntu 22.04 LTS linux-ibm 5.15.0-1072.75 USN-7387-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1027.27~22.04.1 —
Ubuntu 22.04 LTS linux-intel-iot-realtime 5.15.0-1073.75 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1075.81 USN-7387-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1076.81 USN-7388-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-62.65.1~22.04.1 USN-7595-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1074.75 USN-7387-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1029.32~22.04.1 USN-7595-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1033.33 USN-7389-1
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1021.21 USN-7389-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1027.28~22.04.1 USN-7595-4
Ubuntu 22.04 LTS linux-raspi 5.15.0-1074.77 USN-7387-1
Ubuntu 22.04 LTS linux-riscv +31 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.8 6.8.0-62.65~22.04.1 —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1044.48 USN-7390-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1080.87~20.04.1 USN-7388-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1086.95~20.04.1 USN-7421-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1086.95~20.04.1.1 USN-7421-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1081.90~20.04.1 USN-7459-2
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-136.147~20.04.1 USN-7407-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1074.77~20.04.1 USN-7458-1
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-135.146~20.04.1 USN-7387-1
Ubuntu 20.04 LTS linux-oracle-5.15 +1 5.15.0-1077.83~20.04.1 USN-7459-1, USN-7387-1
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1075.79~20.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2024.25 USN-7595-3
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1023.24 USN-7595-2
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1073.75 USN-7387-3
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1080.88 USN-7387-3
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1023.24~22.04.1 —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-78.78+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1080.87+fips1 USN-7387-2
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1083.92+fips1 USN-7387-2
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-135.146+fips1 USN-7387-2
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1079.88+fips1 USN-7387-2
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1039.39~20.04.1 —
ReleasePackageFixed inAdvisory
RHEL 10 rv +76 6.12.0-124.8.1.el10_1 RHSA-2025:20095

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 10 rv +74 6.12.0-124.8.1.el10_1 ALSA-2025:20095

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 10 kernel 6.12.0-124.8.1.el10_1 RLSA-2025:20095
ReleasePackageFixed inAdvisory
SLES 15 SP6 kernel-64kb +3 6.4.0-150600.23.42.2 SUSE-SU-2025:0856-1
SLES 15 SP6 kernel-azure +2 6.4.0-150600.8.31.1 SUSE-SU-2025:0847-1
SLES 15 SP6 kernel-coco +3 6.4.0-15061.18.coco15sp6.1 SUSE-SU-2025:0784-1
SLES 15 SP6 kernel-default-base 6.4.0-150600.23.42.2.150600.12.18.4 SUSE-SU-2025:0856-1
SLES 15 SP6 kernel-docs +2 6.4.0-150600.23.42.1 SUSE-SU-2025:0856-1
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLE Micro 6.1 kernel-default-base 6.4.0-28.1.21.6 SUSE-SU-2025:20270-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0-RT_Update_4 +1 3-1.1 SUSE-SU-2025:20402-1, SUSE-SU-2025:20401-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_2 +1 6-1.1 SUSE-SU-2025:20400-1, SUSE-SU-2025:20397-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_4 4-1.2 SUSE-SU-2025:20398-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_5 3-1.2 SUSE-SU-2025:20399-1
SLE Micro 6.1 kernel-livepatch-MICRO-6-0_Update_6 +1 1-3.1 SUSE-SU-2025:20270-1, SUSE-SU-2025:20260-1
SLE Micro 6.1 kernel-rt +4 6.4.0-28.1 SUSE-SU-2025:20270-1, SUSE-SU-2025:20260-1
SLE Micro 6.0 kernel-default-base 6.4.0-28.1.21.6 SUSE-SU-2025:20192-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0-RT_Update_4 +1 3-1.1 SUSE-SU-2025:20383-1, SUSE-SU-2025:20382-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_2 +1 6-1.1 SUSE-SU-2025:20386-1, SUSE-SU-2025:20381-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_3 +1 6-1.2 SUSE-SU-2025:20388-1, SUSE-SU-2025:20384-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_4 4-1.2 SUSE-SU-2025:20387-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_5 3-1.2 SUSE-SU-2025:20389-1
SLE Micro 6.0 kernel-livepatch-MICRO-6-0_Update_6 +1 1-3.1 SUSE-SU-2025:20192-1, SUSE-SU-2025:20190-1
SLE Micro 6.0 kernel-rt +4 6.4.0-28.1 SUSE-SU-2025:20192-1, SUSE-SU-2025:20190-1
SLE Live Patching 15 SP6 kernel-default 6.4.0-150600.23.42.2 SUSE-SU-2025:0856-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_0 16-150600.3.1 SUSE-SU-2025:01840-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_4 10-150600.2.1 SUSE-SU-2025:01853-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_5 9-150600.2.1 SUSE-SU-2025:01839-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_6 6-150600.2.1 SUSE-SU-2025:01851-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6-RT_Update_9 1-150600.1.3.2 SUSE-SU-2025:0955-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_2 15-150600.2.2 SUSE-SU-2025:01932-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_4 11-150600.2.2 SUSE-SU-2025:01930-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_6 +1 6-150600.2.2 SUSE-SU-2025:01957-1, SUSE-SU-2025:01944-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_8 2-150600.2.2 SUSE-SU-2025:01948-1
SLE Live Patching 15 SP6 kernel-livepatch-SLE15-SP6_Update_9 1-150600.13.3.4 SUSE-SU-2025:0856-1
SUSE Real Time Module 15 SP6 kernel-rt +3 6.4.0-150600.10.29.1 SUSE-SU-2025:0955-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.6 dtb-aarch64 +4 6.4.0-150600.23.42.1 SUSE-SU-2025:0856-1
openSUSE Leap 15.6 kernel-64kb +5 6.4.0-150600.23.42.2 SUSE-SU-2025:0856-1
openSUSE Leap 15.6 kernel-azure +2 6.4.0-150600.8.31.1 SUSE-SU-2025:0847-1
openSUSE Leap 15.6 kernel-default-base 6.4.0-150600.23.42.2.150600.12.18.4 SUSE-SU-2025:0856-1
openSUSE Leap 15.6 kernel-rt +3 6.4.0-150600.10.29.1 SUSE-SU-2025:0955-1

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.76.1-1 —
Azure Linux 2 (CBL-Mariner) kernel 5.15.180.1-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 kernel-uek +34 6.12.0-101.33.4.3.el10uek ELSA-2025-20530, ELSA-2025-20480

Advisories 50

References