In the Linux kernel, the following vulnerability has been resolved:
net: gro: don't merge zcopy skbs
skb_gro_receive() can currently copy frags between the source and GRO skb, without checking the zerocopy status, and in particular the SKBFL_MANAGED_FRAG_REFS flag.
When SKBFL_MANAGED_FRAG_REFS is set, the skb doesn't hold a reference on the pages in shinfo->frags. Appending those frags to another skb's frags without fixing up the page refcount can lead to UAF.
When either the last skb in the GRO chain (the one we would append frags to) or the source skb is zerocopy, don't merge the skbs.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-modules-coreUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-64k-modules-extraUpgrade kernel-devel-matchedUpgrade python3-perfUpgrade kernel-64k-modules-extraUpgrade kernel-zfcpdump-coreUpgrade kernel-64k-devel-matchedUpgrade kernel-develUpgrade kernel-rt-coreUpgrade kernel-64k-debug-modules-coreUpgrade kernel-uki-virtUpgrade kernel-64k-debug-devel-matchedUpgrade perfUpgrade libperfUpgrade kernel-zfcpdump-develUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-rt-modulesUpgrade kernel-docUpgrade kernel-64k-debugUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-headersUpgrade kernel-rtUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-64kUpgrade kernel-debug-devel-matchedUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-debug-develUpgrade kernel-rt-64k-modulesUpgrade rvUpgrade kernel-abi-stablelistsUpgrade kernel-modulesUpgrade kernel-rt-64k-develUpgrade kernel-64kUpgrade kernel-64k-debug-modulesUpgrade kernel-debug-develUpgrade kernelUpgrade kernel-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-64k-modules-coreUpgrade kernel-debug-coreUpgrade kernel-rt-debug-coreUpgrade kernel-64k-develUpgrade kernel-64k-modulesUpgrade kernel-debugUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-debugUpgrade kernel-rt-modules-coreUpgrade kernel-64k-debug-coreUpgrade kernel-rt-develUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-64k-modules-coreUpgrade kernel-toolsUpgrade kernel-cross-headersUpgrade rtlaUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-64k-coreUpgrade kernel-debug-modules-coreUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-rt-64k-debugUpgrade kernel-debug-uki-virtUpgrade kernel-64k-coreUpgrade kernel-coreUpgrade kernel-64k-debug-devel | Jul 9, 2026 | Jul 6, 2026 |
| Amazon_linux_2023 | — | Upgrade perf-debuginfoUpgrade kernel6.12Upgrade perf6.12-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel6.18Upgrade kernel-livepatch-6.18.30-61.119Upgrade bpftoolUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel-modules-extra-commonUpgrade kernel6.12-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.18-debuginfoUpgrade kernel-develUpgrade kernel6.18-develUpgrade kernel6.18-debuginfo-common-aarch64Upgrade bpftool6.18Upgrade kernel-livepatch-6.1.172-216.339Upgrade bpftool-debuginfoUpgrade bpftool6.12-debuginfoUpgrade perfUpgrade perf6.18Upgrade python3-perf6.18-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-livepatch-6.12.88-119.160Upgrade kernel-tools-develUpgrade kernel6.18-headersUpgrade kernel6.12-modules-extraUpgrade python3-perf6.18Upgrade kernel6.18-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade python3-perf6.12-debuginfoUpgrade kernelUpgrade perf6.12Upgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool6.18-debuginfoUpgrade kernel6.12-headersUpgrade perf6.18-debuginfoUpgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel6.18-toolsUpgrade kernel6.12-modules-extra-commonUpgrade python3-perf6.12Upgrade bpftool6.12Upgrade kernel6.18-modules-extraUpgrade kernel6.12-toolsUpgrade kernel6.12-debuginfo-common-aarch64 | Jun 23, 2026 | Jun 9, 2026 |
| Debian | — | Upgrade linux-6.1Upgrade linux | Jul 5, 2026 | Jul 5, 2026 |
| Redhat Openshift | — | Upgrade rhcos | Aug 10, 2026 | May 19, 2026 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Jun 24, 2026 | May 19, 2026 |
| Rocky_linux | — | Upgrade kernel-uki-virtUpgrade kernel-develUpgrade python3-perfUpgrade rvUpgrade perfUpgrade kernel-coreUpgrade kernel-modules-coreUpgrade kernel-modulesUpgrade kernel-devel-matchedUpgrade kernel-debuginfo-common-s390xUpgrade perf-debuginfoUpgrade kernel-debug-develUpgrade kernel-toolsUpgrade libperf-debuginfoUpgrade kernel-debugUpgrade kernel-debug-devel-matchedUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-uki-virt-addonsUpgrade kernel-zfcpdumpUpgrade kernel-zfcpdump-develUpgrade libperfUpgrade kernel-modules-extraUpgrade kernel-debug-modulesUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-tools-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modules-extraUpgrade kernel-debuginfoUpgrade kernel-debug-debuginfoUpgrade kernel-zfcpdump-modulesUpgrade rtlaUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-libsUpgrade kernel-debug-uki-virtUpgrade kernel-debug-modules-coreUpgrade kernel-debug-core | Jul 13, 2026 | Jul 11, 2026 |
| Ubuntu | — | Upgrade linux-image-7.0.0-28-generic-64kUpgrade linux-image-6.8.0-134-lowlatency-64kUpgrade linux-image-oem-7.0Upgrade linux-image-xilinxUpgrade linux-image-6.8.0-1032-xilinxUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-7.0.0-1007-azureUpgrade linux-image-virtual-7.0Upgrade linux-image-lowlatencyUpgrade linux-image-generic-64k-7.0Upgrade linux-image-azure-6.8Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.8.0-1059-azureUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-7.0.0-28-genericUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oem-26.04Upgrade linux-image-azure-7.0Upgrade linux-image-6.8.0-134-lowlatencyUpgrade linux-image-lowlatency-6.8Upgrade linux-image-oem-26.04aUpgrade linux-image-azureUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-7.0.0-1008-oemUpgrade linux-image-generic-7.0Upgrade linux-image-xilinx-6.8 | Jun 16, 2026 | Jun 9, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | Jun 9, 2026 |
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