In the Linux kernel, the following vulnerability has been resolved:
netfilter: handle unreadable frags
sashiko reports: When an skb with unreadable fragments (such as from devmem TCP, where skb_frags_readable(skb) returns false) is processed by the u32 module, skb_copy_bits() will safely return a negative error code [..]
xt_u32: bail out with hotdrop in this case. gather_frags: return -1, just as if we had no fragment header. nfnetlink_queue: restrict to the linear part. nfnetlink_log: restrict to the linear part.
v2: - skb_zerocopy helpers don't copy readable flag, i.e. nfnetlink_queue is broken too xt_u32 shouldn't return true if hotdrop was set.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.12-develUpgrade kernel6.12-toolsUpgrade kernel6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.18Upgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.18-headersUpgrade kernel6.12-modules-extraUpgrade microvm-kernel6.18Upgrade kernel6.18-modules-extraUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-tools-develUpgrade bpftool6.12-debuginfoUpgrade perf6.12-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool6.18-debuginfoUpgrade kernel-livepatch-6.18.39-79.141Upgrade kernel6.18-develUpgrade perf6.18-debuginfoUpgrade perf6.12Upgrade perf6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-debuginfo-common-x86_64Upgrade bpftool6.18Upgrade python3-perf6.18-debuginfoUpgrade kernel6.18-debuginfoUpgrade kernel-livepatch-6.12.100-125.179Upgrade kernel6.12-headersUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.12Upgrade bpftool6.12Upgrade python3-perf6.18 | Aug 18, 2026 | Jul 25, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Jul 28, 2026 | Jul 28, 2026 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 31, 2026 | Jul 25, 2026 |
| Rocky_linux | — | Upgrade kernel-uki-virt-addonsUpgrade kernel-debug-debuginfoUpgrade rvUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-coreUpgrade kernel-toolsUpgrade kernel-zfcpdump-modulesUpgrade kernel-rt-modules-coreUpgrade kernel-debug-modules-coreUpgrade libperfUpgrade kernel-devel-matchedUpgrade kernel-debug-modulesUpgrade kernel-uki-virtUpgrade kernel-modules-coreUpgrade kernel-zfcpdumpUpgrade kernel-rtUpgrade kernel-rt-debuginfoUpgrade kernel-modules-extra-matchedUpgrade kernel-debug-modules-extraUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-modulesUpgrade kernel-debug-devel-matchedUpgrade kernel-debuginfo-common-s390xUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-debug-modules-extraUpgrade libperf-debuginfoUpgrade kernel-debug-develUpgrade kernel-rt-debug-coreUpgrade kernel-rt-develUpgrade kernel-coreUpgrade python3-perfUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-tools-libsUpgrade kernel-rt-modules-extraUpgrade rtlaUpgrade kernel-develUpgrade kernel-rt-debug-modulesUpgrade kernel-debugUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debug-develUpgrade kernel-modulesUpgrade kernel-rt-debugUpgrade perf-debuginfoUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-zfcpdump-develUpgrade kernel-debuginfoUpgrade kernel-debug-coreUpgrade python3-perf-debuginfoUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-coreUpgrade kernel-modules-extraUpgrade kernel-debug-uki-virtUpgrade perfUpgrade kernel-zfcpdump-debuginfo | Sep 23, 2026 | Sep 19, 2026 |
| Ubuntu | — | Upgrade linux-image-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-aws-64kUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-raspi-7.0Upgrade linux-image-virtualUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-generic-7.0Upgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-oem-7.0Upgrade linux-image-generic-64k-7.0Upgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-gcpUpgrade linux-image-awsUpgrade linux-image-raspi-realtimeUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-oem-26.04bUpgrade linux-image-virtual-hwe-26.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-realtime-hwe-26.04Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-7.0.0-31-genericUpgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-gcp-64kUpgrade linux-image-gkeUpgrade linux-image-oem-26.04aUpgrade linux-image-7.0.0-1012-awsUpgrade linux-image-ibm-7.0Upgrade linux-image-nvidia-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-genericUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-raspiUpgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-oem-26.04Upgrade linux-image-gke-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-generic-64kUpgrade linux-image-gke-7.0Upgrade linux-image-7.0.0-1013-oemUpgrade linux-image-nvidia-bosUpgrade linux-image-nvidiaUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-gcp-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-realtimeUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-realtime-64k-7.0Upgrade linux-image-gke-64k-7.0Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1011-gcp-64k | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 31, 2026 | Jul 25, 2026 |
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