🛡️ UBUNTU-CVE-2026-23274
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call mod_timer() on timer->timer. If the label was created first by revision 1 with XT_IDLETIMER_ALARM, the object uses alarm timer semantics and timer->timer is never initialized. Reusing that object from revision 0 causes mod_timer() on an uninitialized timer_list, triggering debugobjects warnings and possible panic when panic_on_warn=1. Fix this by rejecting revision 0 rule insertion when an existing timer with the same label is of ALARM type.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-03-20
Updated 2026-06-15
Modified 2026-06-12
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 6.17.0-29.29
linux-allwinner-5.19
linux-aws 6.17.0-1015.15
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.15 5.15.0-1108.115~20.04.1
linux-aws-5.19
linux-aws-5.3
linux-aws-5.8
linux-aws-6.14
linux-aws-6.17 6.17.0-1017.17~24.04.1
linux-aws-6.2
linux-aws-6.5
linux-aws-6.8 6.8.0-1057.60~22.04.1
linux-aws-fips 6.8.0-1055.58+fips1
linux-azure 6.17.0-1015.15
linux-azure-5.11
linux-azure-5.13
linux-azure-5.15 5.15.0-1114.123~20.04.1
linux-azure-5.19
linux-azure-5.3
linux-azure-5.8
linux-azure-6.11
linux-azure-6.14
linux-azure-6.17 6.17.0-1015.15~24.04.1
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 6.8.0-1059.65+fips1
linux-azure-nvidia
linux-azure-nvidia-6.14
linux-bluefield
linux-fips 6.8.0-116.116+fips1
linux-gcp 6.17.0-1018.19
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.15 5.15.0-1108.117~20.04.1
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.8
linux-gcp-6.11
linux-gcp-6.14
linux-gcp-6.17 6.17.0-1018.19~24.04.1
linux-gcp-6.2
linux-gcp-6.5
linux-gcp-6.8 6.8.0-1060.63~22.04.1
linux-gcp-fips 6.8.0-1058.61+fips1
linux-gke 6.8.0-1054.60
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop 6.8.0-1041.44
linux-gkeop-5.15
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.15 5.15.0-179.189~20.04.1
linux-hwe-5.19
linux-hwe-5.8
linux-hwe-6.11
linux-hwe-6.14
linux-hwe-6.17 6.17.0-29.29~24.04.1
linux-hwe-6.2
linux-hwe-6.5
linux-hwe-6.8 6.8.0-124.124~22.04.1
linux-hwe-edge
linux-ibm 6.8.0-1055.56
linux-ibm-5.15 5.15.0-1102.105~20.04.1
linux-ibm-6.8 6.8.0-1055.56~22.04.1
linux-intel-5.13
linux-intel-iot-realtime 5.15.0-1099.101
linux-intel-iotg 5.15.0-1103.109
linux-intel-iotg-5.15 5.15.0-1103.109~20.04.1
linux-kvm 5.15.0-1100.105
linux-lowlatency 6.8.0-117.117.1
linux-lowlatency-hwe-5.15 5.15.0-178.188~20.04.1
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 6.8.0-117.117.1~22.04.1
linux-nvidia 6.8.0-1054.57
linux-nvidia-6.11
linux-nvidia-6.17
linux-nvidia-6.2
linux-nvidia-6.5
linux-nvidia-6.8 6.8.0-1054.57~22.04.1
linux-nvidia-lowlatency 6.8.0-1054.57.1
linux-nvidia-tegra 6.8.0-1024.24
linux-nvidia-tegra-5.15 5.15.0-1060.60~20.04.1
linux-nvidia-tegra-igx 5.15.0-1049.49
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 6.17.0-1023.23
linux-oem-6.5
linux-oem-6.8
linux-oracle 6.17.0-1014.14
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.15
linux-oracle-5.3
linux-oracle-5.8
linux-oracle-6.14
linux-oracle-6.17 6.17.0-1014.14~24.04.1
linux-oracle-6.5
linux-oracle-6.8 6.8.0-1054.55~22.04.1
linux-raspi 6.17.0-1017.17
linux-raspi-realtime 6.8.0-2045.46
linux-raspi2
linux-realtime 6.17.0-1013.15
linux-realtime-6.14
linux-realtime-6.17 6.17.0-1013.15~24.04.1
linux-realtime-6.8 6.8.1-1051.52~22.04.1
linux-riscv 6.17.0-29.29.1
linux-riscv-5.11
linux-riscv-5.15 5.15.0-1102.106~20.04.1
linux-riscv-5.19
linux-riscv-5.8
linux-riscv-6.14
linux-riscv-6.17 6.17.0-29.29.1~24.04.1
linux-riscv-6.5
linux-riscv-6.8 6.8.0-117.117~22.04.1
linux-starfive-5.19
linux-starfive-6.2
linux-starfive-6.5
linux-xilinx
linux-xilinx-zynqmp

References

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