In the Linux kernel, the following vulnerability has been resolved:
net: Fix TOCTOU issue in sk_is_readable()
sk->sk_prot->sock_is_readable is a valid function pointer when sk resides in a sockmap. After the last sk_psock_put() (which usually happens when socket is removed from sockmap), sk->sk_prot gets restored and sk->sk_prot->sock_is_readable becomes NULL.
This makes sk_is_readable() racy, if the value of sk->sk_prot is reloaded after the initial check. Which in turn may lead to a null pointer dereference.
Ensure the function pointer does not turn NULL after the check.
CVSS Details
- CVSS 3.1 Base Score: 4.7
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/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 perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.239-236.958Upgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-5.15.186-128.192Upgrade kernel-tools-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-develUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade perfUpgrade kernelUpgrade bpftool | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-libbpf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.12-modules-extraUpgrade python3-perf6.12-debuginfoUpgrade kernel-toolsUpgrade python3-perf6.12Upgrade perf6.12-debuginfoUpgrade python3-perfUpgrade kernel-livepatch-6.12.35-55.103Upgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-modules-extra-commonUpgrade kernel-debuginfoUpgrade perfUpgrade kernel6.12Upgrade kernel-livepatch-6.1.144-170.251Upgrade kernel6.12-debuginfoUpgrade kernel-libbpf-staticUpgrade bpftoolUpgrade kernelUpgrade kernel-libbpfUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade perf6.12Upgrade python3-perf-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-modules-extra | Aug 5, 2025 | Jul 3, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 4, 2025 | Jul 4, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernel | Dec 12, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools | Sep 15, 2025 | Sep 9, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perfUpgrade bpftool | Oct 24, 2025 | Sep 9, 2025 |
| Oracle_linux | — | Upgrade kernel-uek | Sep 10, 2025 | Jul 3, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jul 3, 2025 |
| Suse | — | Upgrade dtb-hisiliconUpgrade dtb-mediatekUpgrade kernel-rt-develUpgrade kernel-syms-rtUpgrade kernel-rt-livepatchUpgrade kernel-debugUpgrade kernel-default-optionalUpgrade kernel-obs-qaUpgrade kernel-rt-livepatch-develUpgrade kernel-kvmsmallUpgrade dtb-freescaleUpgrade kernel-default-extraUpgrade kernel-devel-rtUpgrade kernel-default-vdsoUpgrade kernel-zfcpdumpUpgrade ocfs2-kmp-rtUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt_debugUpgrade kernel-sourceUpgrade dlm-kmp-64kbUpgrade kernel-azure-vdsoUpgrade kernel-64kb-optionalUpgrade kernel-default-develUpgrade kernel-devel-azureUpgrade dtb-appleUpgrade kernel-kvmsmall-develUpgrade kernel-macrosUpgrade kernel-64kbUpgrade kernel-syms-azureUpgrade cluster-md-kmp-azureUpgrade dtb-amdUpgrade gfs2-kmp-64kbUpgrade kernel-rtUpgrade dtb-amlogicUpgrade kselftests-kmp-defaultUpgrade kselftests-kmp-64kbUpgrade dlm-kmp-azureUpgrade gfs2-kmp-rtUpgrade kernel-source-azureUpgrade kernel-azure-extraUpgrade dtb-apmUpgrade dtb-armUpgrade kernel-symsUpgrade cluster-md-kmp-defaultUpgrade dtb-xilinxUpgrade dtb-lgUpgrade dtb-exynosUpgrade dtb-amazonUpgrade kernel-default-livepatchUpgrade kernel-default-manUpgrade kernel-64kb-develUpgrade kernel-debug-develUpgrade dtb-rockchipUpgrade dtb-qcomUpgrade dtb-alteraUpgrade kernel-develUpgrade dtb-sprdUpgrade dlm-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kernel-obs-buildUpgrade reiserfs-kmp-64kbUpgrade ocfs2-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade kernel-azure-optionalUpgrade kernel-rt-extraUpgrade kernel-docs-htmlUpgrade dtb-socionextUpgrade kernel-source-rtUpgrade kselftests-kmp-azureUpgrade kernel-rt-vdsoUpgrade gfs2-kmp-defaultUpgrade reiserfs-kmp-defaultUpgrade kernel-docsUpgrade cluster-md-kmp-rtUpgrade ocfs2-kmp-64kbUpgrade kernel-source-vanillaUpgrade kernel-rt-optionalUpgrade kernel-default-base-rebuildUpgrade kernel-azureUpgrade dtb-renesasUpgrade ocfs2-kmp-defaultUpgrade dlm-kmp-rtUpgrade kernel-azure-develUpgrade dtb-caviumUpgrade dtb-nvidiaUpgrade kernel-default-livepatch-develUpgrade kernel-default-baseUpgrade kernel-64kb-extraUpgrade dtb-marvellUpgrade dtb-allwinnerUpgrade reiserfs-kmp-azureUpgrade kernel-rt_debug-develUpgrade kernel-defaultUpgrade kernel-debug-vdsoUpgrade gfs2-kmp-azureUpgrade dtb-broadcomUpgrade cluster-md-kmp-64kbUpgrade reiserfs-kmp-rt | Dec 5, 2025 | Aug 18, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-oem-22.04cUpgrade linux-image-6.14.0-1012-oemUpgrade linux-image-6.14.0-1016-gcp-64kUpgrade linux-image-6.14.0-32-generic-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-ibmUpgrade linux-image-ibm-6.8Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-azure-6.8Upgrade linux-image-5.15.0-1034-nvidia-tegra-igxUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-oem-22.04aUpgrade linux-image-generic-lpaeUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-5.15.0-156-generic-lpaeUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-azure-fipsUpgrade linux-image-realtime-5.15Upgrade linux-image-5.15.0-1092-realtimeUpgrade linux-image-5.15.0-156-genericUpgrade linux-image-5.15.0-1085-intel-iot-realtimeUpgrade linux-image-5.15.0-1092-aws-fipsUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-gke-6.8Upgrade linux-image-5.15.0-1086-raspiUpgrade linux-image-5.15.0-1088-kvmUpgrade linux-image-aws-64k-6.14Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-gcp-6.8Upgrade linux-image-virtualUpgrade linux-image-6.14.0-1012-realtimeUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1086-ibmUpgrade linux-image-5.15.0-1096-azure-fipsUpgrade linux-image-aws-64k-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-fips-5.15Upgrade linux-image-virtual-6.14Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-oracleUpgrade linux-image-generic-64k-6.8Upgrade linux-image-oem-6.14Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-nvidia-5.15Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-oem-24.04bUpgrade linux-image-6.14.0-1013-oracleUpgrade linux-image-6.14.0-32-genericUpgrade linux-image-5.15.0-156-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-5.15.0-1075-gkeopUpgrade linux-image-5.15.0-156-fipsUpgrade linux-image-gkeop-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-oracle-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-oem-22.04bUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-oem-24.04cUpgrade linux-image-aws-lts-22.04Upgrade linux-image-gcp-5.15Upgrade linux-image-generic-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-lowlatencyUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-5.15.0-156-lowlatencyUpgrade linux-image-gke-5.15Upgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-awsUpgrade linux-image-kvmUpgrade linux-image-fips-6.8Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-aws-fips-6.8Upgrade linux-image-5.15.0-1087-nvidia-lowlatencyUpgrade linux-image-5.15.0-1092-awsUpgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1092-gcpUpgrade linux-image-xilinxUpgrade linux-image-oracle-64k-6.14Upgrade linux-image-5.15.0-1056-xilinx-zynqmpUpgrade linux-image-raspi-realtimeUpgrade linux-image-6.8.0-100-fipsUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-lowlatency-64kUpgrade linux-image-generic-5.15Upgrade linux-image-aws-64k-5.15Upgrade linux-image-generic-6.14Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1089-gkeUpgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gcp-6.14Upgrade linux-image-azureUpgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-ibm-5.15Upgrade linux-image-gkeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1051-azureUpgrade linux-image-realtimeUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-intelUpgrade linux-image-azure-5.15Upgrade linux-image-5.15.0-1092-aws-64kUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-6.14.0-1012-azureUpgrade linux-image-5.15.0-1096-azureUpgrade linux-image-5.15.0-1087-nvidiaUpgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-oracle-6.14Upgrade linux-image-intel-iotg-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-nvidia-6.8Upgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-fipsUpgrade linux-image-6.14.0-1014-raspiUpgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-5.15.0-1034-nvidia-tegra-igx-rtUpgrade linux-image-oracle-5.15Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-generic-64k-5.15Upgrade linux-image-gkeopUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-lowlatency-6.8Upgrade linux-image-generic-64k-6.14Upgrade linux-image-generic-64kUpgrade linux-image-gcp-fips-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-6.14.0-1013-aws-64kUpgrade linux-image-6.14.0-1013-awsUpgrade linux-image-5.15.0-1090-oracleUpgrade linux-image-5.15.0-1087-intel-iotgUpgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1046-awsUpgrade linux-image-realtime-6.8.1Upgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-5.15.0-156-generic-64kUpgrade linux-image-virtual-6.8Upgrade linux-image-realtime-6.14Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-raspi-5.15Upgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-nvidiaUpgrade linux-image-kvm-5.15Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-fipsUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-1045-nvidia-tegraUpgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-raspi-6.14Upgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-lowlatency-5.15Upgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1092-gcp-fipsUpgrade linux-image-5.15.0-1045-nvidia-tegra-rtUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.14.0-1016-gcpUpgrade linux-image-aws-fips-5.15Upgrade linux-image-aws-6.8Upgrade linux-image-6.14.0-1013-oracle-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-oem-22.04dUpgrade linux-image-gkeop-5.15Upgrade linux-image-gke-64kUpgrade linux-image-genericUpgrade linux-image-azure-6.14Upgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-6.14Upgrade linux-image-virtual-5.15Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-raspiUpgrade linux-image-oem-24.04Upgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-oem-22.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-raspi-6.8 | Jul 7, 2025 | Jul 3, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 2, 2025 | Jul 3, 2025 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub