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Unscored CVE-2025-71125 EUVD-2026-2491GHSA-hxvv-8gx6-fvgh

tracing: Do not register unsupported perf events

Published Jan 14, 2026 · Updated Oct 19, 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-5.4 Package: linux-aws-5.8 Package: linux-aws-6.14 Package: linux-aws-6.17 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-5.4 Package: linux-azure-5.8 Package: linux-azure-6.11 Package: linux-azure-6.14 Package: linux-azure-6.17 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-6.14 Package: linux-azure-fde-6.2 Package: linux-azure-fde-6.8 Package: linux-azure-fips Package: linux-azure-nvidia Package: linux-azure-nvidia-6.14 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-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.11 Package: linux-gcp-6.14 Package: linux-gcp-6.17 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-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.11 Package: linux-hwe-6.14 Package: linux-hwe-6.17 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-5.4 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-iot 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-6.17 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-6.14 Package: linux-oem-6.17 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-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.14 Package: linux-oracle-6.17 Package: linux-oracle-6.5 Package: linux-oracle-6.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-realtime-6.14 Package: linux-realtime-6.17 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-6.14 Package: linux-riscv-6.17 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:

tracing: Do not register unsupported perf events

Synthetic events currently do not have a function to register perf events.
This leads to calling the tracepoint register functions with a NULL
function pointer which triggers:

------------[ cut here ]------------
WARNING: kernel/tracepoint.c:175 at tracepoint_add_func+0x357/0x370, CPU#2: perf/2272
Modules linked in: kvm_intel kvm irqbypass
CPU: 2 UID: 0 PID: 2272 Comm: perf Not tainted 6.18.0-ftest-11964-ge022764176fc-dirty #323 PREEMPTLAZY
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-debian-1.17.0-1 04/01/2014
RIP: 0010:tracepoint_add_func+0x357/0x370
Code: 28 9c e8 4c 0b f5 ff eb 0f 4c 89 f7 48 c7 c6 80 4d 28 9c e8 ab 89 f4 ff 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc <0f> 0b 49 c7 c6 ea ff ff ff e9 ee fe ff ff 0f 0b e9 f9 fe ff ff 0f
RSP: 0018:ffffabc0c44d3c40 EFLAGS: 00010246
RAX: 0000000000000001 RBX: ffff9380aa9e4060 RCX: 0000000000000000
RDX: 000000000000000a RSI: ffffffff9e1d4a98 RDI: ffff937fcf5fd6c8
RBP: 0000000000000001 R08: 0000000000000007 R09: ffff937fcf5fc780
R10: 0000000000000003 R11: ffffffff9c193910 R12: 000000000000000a
R13: ffffffff9e1e5888 R14: 0000000000000000 R15: ffffabc0c44d3c78
FS: 00007f6202f5f340(0000) GS:ffff93819f00f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d3162281a8 CR3: 0000000106a56003 CR4: 0000000000172ef0
Call Trace:
<TASK>
tracepoint_probe_register+0x5d/0x90
synth_event_reg+0x3c/0x60
perf_trace_event_init+0x204/0x340
perf_trace_init+0x85/0xd0
perf_tp_event_init+0x2e/0x50
perf_try_init_event+0x6f/0x230
? perf_event_alloc+0x4bb/0xdc0
perf_event_alloc+0x65a/0xdc0
__se_sys_perf_event_open+0x290/0x9f0
do_syscall_64+0x93/0x7b0
? entry_SYSCALL_64_after_hwframe+0x76/0x7e
? trace_hardirqs_off+0x53/0xc0
entry_SYSCALL_64_after_hwframe+0x76/0x7e

Instead, have the code return -ENODEV, which doesn't warn and has perf
error out with:

# perf record -e synthetic:futex_wait
Error:
The sys_perf_event_open() syscall returned with 19 (No such device) for event (synthetic:futex_wait).
"dmesg | grep -i perf" may provide additional information.

Ideally perf should support synthetic events, but for now just fix the
warning. The support can come later.

Affected products

VendorProductAffectedFixed
Linux Linux 4.17 5.10.248

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 6.18.3-1 —
Debian 13 linux 6.12.69-1 DSA-6126-1
Debian 12 linux 6.1.162-1 DSA-6127-1
Debian 11 linux 5.10.249-1 DLA-4475-1
Debian 11 linux-6.1 6.1.162-1~deb11u1 DLA-4476-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 24.04 LTS linux-bluefield 6.8.0-1017.21 —
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1086.88 —
Ubuntu 25.10 linux 6.17.0-22.22 USN-8177-1
Ubuntu 25.10 linux-aws +1 6.17.0-1012.12 USN-8183-2, USN-8183-1
Ubuntu 25.10 linux-azure +1 6.17.0-1013.13 USN-8245-1
Ubuntu 25.10 linux-azure-fde No fix yet —
Ubuntu 25.10 linux-oracle 6.17.0-1011.11 USN-8183-2
Ubuntu 25.10 linux-realtime 6.17.0-1010.11 USN-8177-1
Ubuntu 25.10 linux-riscv 6.17.0-22.22.1 —
Ubuntu 24.04 LTS linux 6.8.0-110.110 USN-8179-1
Ubuntu 24.04 LTS linux-aws 6.8.0-1052.55 USN-8179-1
Ubuntu 24.04 LTS linux-aws-6.17 +1 6.17.0-1012.12~24.04.1 USN-8183-2, USN-8183-1
Ubuntu 24.04 LTS linux-azure 6.8.0-1054.60 USN-8258-1
Ubuntu 24.04 LTS linux-azure-6.17 6.17.0-1013.13~24.04.1 USN-8245-1
Ubuntu 24.04 LTS linux-azure-fde 6.8.0-1058.65 —
Ubuntu 24.04 LTS linux-azure-nvidia 6.8.0-1039.42 —
Ubuntu 24.04 LTS linux-gcp 6.8.0-1054.57 USN-8179-1
Ubuntu 24.04 LTS linux-gke 6.8.0-1050.56 USN-8179-1
Ubuntu 24.04 LTS linux-gkeop 6.8.0-1037.40 USN-8179-1
Ubuntu 24.04 LTS linux-hwe-6.17 6.17.0-22.22~24.04.1 USN-8183-2
Ubuntu 24.04 LTS linux-ibm 6.8.0-1051.51 USN-8179-1
Ubuntu 24.04 LTS linux-lowlatency 6.8.0-110.110.1 USN-8179-1
Ubuntu 24.04 LTS linux-nvidia 6.8.0-1051.54 USN-8185-1
Ubuntu 24.04 LTS linux-nvidia-6.17 6.17.0-1018.18 —
Ubuntu 24.04 LTS linux-nvidia-lowlatency 6.8.0-1051.54.1 USN-8185-2
Ubuntu 24.04 LTS linux-nvidia-tegra 6.8.0-1022.22 USN-8265-1
Ubuntu 24.04 LTS linux-oem-6.17 6.17.0-1020.20 USN-8245-1
Ubuntu 24.04 LTS linux-oracle 6.8.0-1049.50 USN-8203-1
Ubuntu 24.04 LTS linux-oracle-6.17 6.17.0-1011.11~24.04.1 USN-8183-2
Ubuntu 24.04 LTS linux-raspi 6.8.0-1052.56 USN-8179-3
Ubuntu 24.04 LTS linux-riscv +18 No fix yet —
Ubuntu 24.04 LTS linux-riscv-6.17 6.17.0-22.22.1~24.04.1 —
Ubuntu 24.04 LTS linux-xilinx 6.8.0-1028.29 USN-8261-1
Ubuntu 22.04 LTS linux +1 5.15.0-173.183 USN-8096-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1103.110 USN-8096-1
Ubuntu 22.04 LTS linux-aws-6.8 6.8.0-1052.55~22.04.1 USN-8179-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1109.118 USN-8163-2
Ubuntu 22.04 LTS linux-azure-6.8 6.8.0-1059.65~22.04.1 USN-8440-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1109.118.1 —
Ubuntu 22.04 LTS linux-azure-fde-6.8 6.8.0-1058.65~22.04.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1103.112 USN-8096-1
Ubuntu 22.04 LTS linux-gcp-6.8 6.8.0-1054.57~22.04.1 USN-8179-4
Ubuntu 22.04 LTS linux-gke 5.15.0-1099.105 USN-8096-3
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1086.94 USN-8096-1
Ubuntu 22.04 LTS linux-hwe-6.8 +1 6.8.0-110.110~22.04.1 USN-8179-3
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1097.100 USN-8141-1, USN-8096-1
Ubuntu 22.04 LTS linux-ibm-6.8 6.8.0-1051.51~22.04.1 USN-8179-3
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1098.104 USN-8096-1
Ubuntu 22.04 LTS linux-kvm 5.15.0-1095.100 USN-8096-1
Ubuntu 22.04 LTS linux-lowlatency-hwe-6.8 6.8.0-110.110.1~22.04.1 USN-8179-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1098.99 USN-8096-1
Ubuntu 22.04 LTS linux-nvidia-6.8 6.8.0-1051.54~22.04.1 USN-8185-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1055.55 USN-8096-1
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1044.44 USN-8096-5
Ubuntu 22.04 LTS linux-oracle 5.15.0-1100.106 USN-8096-1
Ubuntu 22.04 LTS linux-oracle-6.8 6.8.0-1049.50~22.04.1 USN-8203-1
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1067.71 USN-8096-1
Show 12 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2042.43 USN-8204-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime 6.8.1-1047.48 USN-8184-1
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.14 No fix yet —
Ubuntu Pro Realtime 24.04 LTS linux-realtime-6.17 6.17.0-1010.11~24.04.1 USN-8177-2
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1094.96 USN-8116-1
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1102.111 USN-8096-4
Ubuntu Pro Realtime 22.04 LTS linux-realtime-6.8 6.8.1-1047.48~22.04.1 USN-8184-1
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-updates 24.04 LTS linux-aws-fips 6.8.0-1052.55+fips1 USN-8179-2
Ubuntu Pro FIPS-updates 24.04 LTS linux-azure-fips 6.8.0-1053.59+fips1 —
Ubuntu Pro FIPS-updates 24.04 LTS linux-fips 6.8.0-110.110+fips2 USN-8179-2
Ubuntu Pro FIPS-updates 24.04 LTS linux-gcp-fips 6.8.0-1054.57+fips1 USN-8179-2
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1103.110+fips1 USN-8096-2
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1109.118+fips1 USN-8163-1
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-173.183+fips1 USN-8096-2
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1103.112+fips1 USN-8096-2
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 20.04 LTS linux +10 No fix yet —
Ubuntu Pro 20.04 LTS linux-aws-5.15 5.15.0-1103.110~20.04.1 USN-8096-3
Ubuntu Pro 20.04 LTS linux-azure-5.15 5.15.0-1110.119~20.04.1 USN-8243-1
Ubuntu Pro 20.04 LTS linux-gcp-5.15 5.15.0-1103.112~20.04.1 USN-8096-3
Ubuntu Pro 20.04 LTS linux-hwe-5.15 +1 5.15.0-173.183~20.04.1 USN-8096-3
Ubuntu Pro 20.04 LTS linux-ibm-5.15 5.15.0-1097.100~20.04.1 USN-8096-1
Ubuntu Pro 20.04 LTS linux-intel-iotg-5.15 5.15.0-1098.104~20.04.1 USN-8096-3
Ubuntu Pro 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1055.55~20.04.1 USN-8096-1
Ubuntu Pro 20.04 LTS linux-oracle-5.15 5.15.0-1100.106~20.04.1 USN-8096-3
Ubuntu Pro 20.04 LTS linux-riscv-5.15 5.15.0-1097.101~20.04.1 —
Ubuntu Pro 18.04 LTS linux-aws-5.4 +6 No fix yet —
ReleasePackageFixed inAdvisory
SLES 15 SP7 kernel-64kb +7 6.4.0-150700.53.34.1 SUSE-SU-2026:1081-1
SLES 15 SP7 kernel-default-base 6.4.0-150700.53.34.1.150700.17.23.1 SUSE-SU-2026:1081-1
Show 7 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 kernel-64kb +8 6.12.0-160000.27.1 SUSE-SU-2026:20931-1
SLES for SAP 16.0 kernel-default-base 6.12.0-160000.27.1.160000.2.8 SUSE-SU-2026:20931-1
SLES 16.0 kernel-64kb +8 6.12.0-160000.27.1 SUSE-SU-2026:20931-1
SLES 16.0 kernel-default-base 6.12.0-160000.27.1.160000.2.8 SUSE-SU-2026:20931-1
SLE Micro 6.2 kernel-default-base 6.12.0-160000.27.1.160000.2.8 SUSE-SU-2026:20838-1
SLE Micro 6.2 kernel-rt +5 6.12.0-160000.27.1 SUSE-SU-2026:20873-1, SUSE-SU-2026:20838-1
SLE Micro 6.1 kernel-default-base 6.4.0-41.1.21.18 SUSE-SU-2026:21114-1
SLE Micro 6.1 kernel-rt +4 6.4.0-41.1 SUSE-SU-2026:21255-1, SUSE-SU-2026:21114-1
SLE Micro 6.0 kernel-default-base 6.4.0-41.1.21.18 SUSE-SU-2026:21123-1
SLE Micro 6.0 kernel-source +2 6.4.0-41.1 SUSE-SU-2026:21123-1
SLE Live Patching 15 SP7 kernel-default 6.4.0-150700.53.34.1 SUSE-SU-2026:1081-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7-RT_Update_10 1-150700.1.3.1 SUSE-SU-2026:0962-1
SLE Live Patching 15 SP7 kernel-livepatch-SLE15-SP7_Update_10 1-150700.15.3.1 SUSE-SU-2026:1081-1
SUSE Real Time Module 15 SP7 kernel-rt +2 6.4.0-150700.7.34.1 SUSE-SU-2026:0962-1
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 kernel-default-base 6.12.0-160000.27.1.160000.2.8 openSUSE-SU-2026:20416-1
openSUSE Leap 16.0 kernel-rt +11 6.12.0-160000.27.1 openSUSE-SU-2026:20416-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.12.64-87.122 +1 1:1.0-0.amzn2023 ALAS2023-2026-1494, ALAS2023-2026-1423
Amazon Linux 2023 perf +14 1:6.1.161-183.298.amzn2023 ALAS2023-2026-1494
Amazon Linux 2023 perf6.12 +14 1:6.12.64-87.122.amzn2023 ALAS2023-2026-1423

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 kernel 6.6.121.1-1 —

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 kernel-uek +34 6.12.0-108.64.6.3.el10uek ELSA-2026-50112
Oracle Linux 8 bpftool +18 5.15.0-318.199.3.2.el9uek ELSA-2026-50145

Advisories 46

References