In the Linux kernel, the following vulnerability has been resolved:
watch_queue: fix pipe accounting mismatch
Currently, watch_queue_set_size() modifies the pipe buffers charged to user->pipe_bufs without updating the pipe->nr_accounted on the pipe itself, due to the if (!pipe_has_watch_queue()) test in pipe_resize_ring(). This means that when the pipe is ultimately freed, we decrement user->pipe_bufs by something other than what than we had charged to it, potentially leading to an underflow. This in turn can cause subsequent too_many_pipe_buffers_soft() tests to fail with -EPERM.
To remedy this, explicitly account for the pipe usage in watch_queue_set_size() to match the number set via account_pipe_buffers()
(It's unclear why watch_queue_set_size() does not update nr_accounted; it may be due to intentional overprovisioning in watch_queue_set_size()?)
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-develUpgrade kernel-livepatch-5.10.236-227.928Upgrade kernel-develUpgrade perfUpgrade kernel-headersUpgrade kernel-livepatch-5.15.180-122.191Upgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade bpftool-debuginfoUpgrade bpftoolUpgrade python-perfUpgrade kernel-tools-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernelUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-tools-debuginfoUpgrade kernel-livepatch-6.12.23-29.97Upgrade kernel-libbpfUpgrade kernel-develUpgrade perf6.12-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade perfUpgrade kernel-libbpf-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade python3-perfUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftoolUpgrade kernel6.12-debuginfoUpgrade kernelUpgrade python3-perf6.12Upgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-livepatch-6.1.134-150.224Upgrade bpftool-debuginfoUpgrade kernel-modules-extraUpgrade perf6.12Upgrade kernel-libbpf-staticUpgrade kernel-headersUpgrade kernel6.12-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade kernel-libbpf-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel6.12Upgrade kernel-modules-extra-common | Aug 5, 2025 | Apr 16, 2025 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Apr 29, 2025 | Apr 16, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 16, 2025 |
| Suse | — | Upgrade kselftests-kmp-defaultUpgrade kernel-symsUpgrade kernel-macrosUpgrade dtb-hisiliconUpgrade dtb-mediatekUpgrade kernel-obs-qaUpgrade dtb-rockchipUpgrade dtb-xilinxUpgrade kernel-64kb-optionalUpgrade kernel-azure-vdsoUpgrade kernel-syms-rtUpgrade reiserfs-kmp-rtUpgrade kernel-rt-develUpgrade kernel-debugUpgrade dlm-kmp-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-docsUpgrade kernel-syms-azureUpgrade kernel-kvmsmall-develUpgrade dlm-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kernel-default-optionalUpgrade dtb-qcomUpgrade cluster-md-kmp-defaultUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-azureUpgrade kernel-rt_debug-vdsoUpgrade gfs2-kmp-64kbUpgrade kernel-64kb-develUpgrade kernel-default-extraUpgrade dtb-armUpgrade kernel-devel-azureUpgrade cluster-md-kmp-azureUpgrade gfs2-kmp-rtUpgrade dtb-amdUpgrade kernel-debug-develUpgrade kernel-defaultUpgrade dtb-socionextUpgrade kernel-default-base-rebuildUpgrade dtb-apmUpgrade kernel-rt-livepatch-develUpgrade ocfs2-kmp-rtUpgrade dtb-amlogicUpgrade kernel-devel-rtUpgrade kernel-kvmsmallUpgrade kernel-develUpgrade kernel-rt_debugUpgrade gfs2-kmp-azureUpgrade dtb-appleUpgrade kernel-source-vanillaUpgrade kernel-rt-extraUpgrade kernel-default-livepatchUpgrade kernel-source-azureUpgrade dtb-marvellUpgrade ocfs2-kmp-azureUpgrade ocfs2-kmp-64kbUpgrade kernel-docs-htmlUpgrade kernel-default-vdsoUpgrade kernel-64kbUpgrade dlm-kmp-64kbUpgrade dtb-nvidiaUpgrade kernel-debug-vdsoUpgrade kselftests-kmp-64kbUpgrade kernel-source-rtUpgrade dtb-freescaleUpgrade dtb-broadcomUpgrade dtb-amazonUpgrade dlm-kmp-rtUpgrade dtb-lgUpgrade kernel-rt_debug-develUpgrade kernel-sourceUpgrade kernel-default-baseUpgrade dtb-alteraUpgrade reiserfs-kmp-64kbUpgrade kernel-64kb-extraUpgrade dtb-renesasUpgrade cluster-md-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade kernel-rt-vdsoUpgrade kernel-obs-buildUpgrade kernel-default-livepatch-develUpgrade kernel-default-develUpgrade kernel-azure-optionalUpgrade dtb-sprdUpgrade dtb-exynosUpgrade dtb-caviumUpgrade kernel-azure-extraUpgrade kernel-rtUpgrade kernel-azure-develUpgrade dtb-allwinnerUpgrade cluster-md-kmp-rtUpgrade kernel-kvmsmall-vdsoUpgrade kselftests-kmp-azureUpgrade kernel-rt-optionalUpgrade kernel-azureUpgrade gfs2-kmp-default | Dec 5, 2025 | May 21, 2025 |
| Ubuntu | — | Upgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1038-oracleUpgrade linux-image-gcpUpgrade linux-image-virtualUpgrade linux-image-kvmUpgrade linux-image-5.15.0-142-lowlatency-64kUpgrade linux-image-6.11.0-1024-oemUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1041-azureUpgrade linux-image-5.15.0-1091-azureUpgrade linux-image-5.15.0-142-generic-lpaeUpgrade linux-image-azure-fips-6.8Upgrade linux-image-aws-lts-22.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-20.04dUpgrade linux-image-6.14.0-1008-gcpUpgrade linux-image-generic-6.8Upgrade linux-image-5.15.0-142-fipsUpgrade linux-image-azure-6.11Upgrade linux-image-5.15.0-1086-awsUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-6.8.0-1041-awsUpgrade linux-image-oem-22.04bUpgrade linux-image-5.15.0-1086-aws-fipsUpgrade linux-image-gke-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-86-generic-64kUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-1050-xilinx-zynqmpUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.8.0-1041-nvidia-lowlatency-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.8.0-1041-nvidiaUpgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-6.8.0-1029-azure-nvidiaUpgrade linux-image-6.11.0-1016-gcpUpgrade linux-image-6.11.0-1015-lowlatency-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-gke-64kUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-oem-24.04bUpgrade linux-image-ibmUpgrade linux-image-6.11.0-28-genericUpgrade linux-image-6.14.0-1007-raspiUpgrade linux-image-azure-fde-6.11Upgrade linux-image-6.8.0-86-lowlatency-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.15.0-142-generic-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-azureUpgrade linux-image-5.15.0-1086-realtimeUpgrade linux-image-ibm-classicUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-5.15.0-142-genericUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-6.11.0-1016-gcp-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-1041-raspiUpgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-5.15.0-1028-nvidia-tegra-igx-rtUpgrade linux-image-6.8.0-1038-oracle-64kUpgrade linux-image-5.15.0-142-lowlatencyUpgrade linux-image-generic-64k-6.8Upgrade linux-image-6.11.0-28-generic-64kUpgrade linux-image-6.8.0-1025-gkeopUpgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-6.11.0-1018-azureUpgrade linux-image-gke-5.15Upgrade linux-image-lowlatency-6.11Upgrade linux-image-azure-fde-edgeUpgrade linux-image-6.14.0-22-genericUpgrade linux-image-azure-cvmUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-awsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-86-genericUpgrade linux-image-nvidia-64kUpgrade linux-image-5.15.0-1068-gkeopUpgrade linux-image-6.8.0-1041-nvidia-64kUpgrade linux-image-oracle-64kUpgrade linux-image-6.11.0-1017-oracle-64kUpgrade linux-image-azure-fdeUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-6.8.0-1041-nvidia-lowlatencyUpgrade linux-image-6.8.0-2032-raspi-realtimeUpgrade linux-image-azure-fipsUpgrade linux-image-6.14.0-1007-awsUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1038-gke-64kUpgrade linux-image-5.15.0-1039-nvidia-tegraUpgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-5.15.0-1028-nvidia-tegra-igxUpgrade linux-image-gcp-fipsUpgrade linux-image-ibm-6.8Upgrade linux-image-6.11.0-1015-awsUpgrade linux-image-6.14.0-1004-realtimeUpgrade linux-image-5.15.0-1083-oracleUpgrade linux-image-intel-iotgUpgrade linux-image-oem-20.04Upgrade linux-image-5.15.0-1080-nvidiaUpgrade linux-image-azure-6.8Upgrade linux-image-gkeUpgrade linux-image-gcp-64kUpgrade linux-image-6.14.0-22-generic-64kUpgrade linux-image-6.14.0-1007-aws-64kUpgrade linux-image-raspiUpgrade linux-image-gkeop-5.15Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.15.0-1082-kvmUpgrade linux-image-5.15.0-1080-nvidia-lowlatencyUpgrade linux-image-6.8.0-1042-gcpUpgrade linux-image-6.14.0-1007-azureUpgrade linux-image-6.11.0-1017-oracleUpgrade linux-image-5.15.0-1078-ibmUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.1-1036-realtimeUpgrade linux-image-gke-64k-6.8Upgrade linux-image-5.15.0-1079-intel-iot-realtimeUpgrade linux-image-oem-22.04dUpgrade linux-image-oem-20.04bUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-64kUpgrade linux-image-6.11.0-1015-lowlatencyUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-1091-azure-fipsUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-5.15.0-1085-gcp-fipsUpgrade linux-image-5.15.0-1083-gkeUpgrade linux-image-azure-lts-22.04Upgrade linux-image-gkeopUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-6.8.0-1044-azure-fipsUpgrade linux-image-5.15.0-1081-intel-iotgUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-realtime-6.8.1Upgrade linux-image-generic-64kUpgrade linux-image-genericUpgrade linux-image-6.8.0-1039-ibmUpgrade linux-image-6.14.0-1008-gcp-64kUpgrade linux-image-6.14.0-1007-azure-fdeUpgrade linux-image-6.11.0-1014-raspiUpgrade linux-image-5.15.0-1086-aws-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-intelUpgrade linux-image-fipsUpgrade linux-image-virtual-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-5.15.0-1085-gcpUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1042-gcp-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-6.14.0-1007-oracle-64kUpgrade linux-image-5.15.0-1039-nvidia-tegra-rtUpgrade linux-image-6.8.0-1038-gkeUpgrade linux-image-6.11.0-1011-realtimeUpgrade linux-image-realtimeUpgrade linux-image-6.14.0-1007-oracleUpgrade linux-image-gcp-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-nvidiaUpgrade linux-image-lowlatency-6.8Upgrade linux-image-6.8.0-1041-aws-64kUpgrade linux-image-5.15.0-1080-raspiUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oracleUpgrade linux-image-6.8.0-86-lowlatencyUpgrade linux-image-generic-hwe-20.04 | Jun 20, 2025 | Apr 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 17, 2025 | Apr 16, 2025 |
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