In the Linux kernel, the following vulnerability has been resolved:
um: Fix out-of-bounds read in LDT setup
syscall_stub_data() expects the data_count parameter to be the number of longs, not bytes.
================================================================== BUG: KASAN: stack-out-of-bounds in syscall_stub_data+0x70/0xe0 Read of size 128 at addr 000000006411f6f0 by task swapper/1
CPU: 0 PID: 1 Comm: swapper Not tainted 5.18.0+ #18 Call Trace: show_stack.cold+0x166/0x2a7 __dump_stack+0x3a/0x43 dump_stack_lvl+0x1f/0x27 print_report.cold+0xdb/0xf81 kasan_report+0x119/0x1f0 kasan_check_range+0x3a3/0x440 memcpy+0x52/0x140 syscall_stub_data+0x70/0xe0 write_ldt_entry+0xac/0x190 init_new_ldt+0x515/0x960 init_new_context+0x2c4/0x4d0 mm_init.constprop.0+0x5ed/0x760 mm_alloc+0x118/0x170 0x60033f48 do_one_initcall+0x1d7/0x860 0x60003e7b kernel_init+0x6e/0x3d4 new_thread_handler+0x1e7/0x2c0
The buggy address belongs to stack of task swapper/1 and is located at offset 64 in frame: init_new_ldt+0x0/0x960
This frame has 2 objects: [32, 40) 'addr' [64, 80) 'desc' ==================================================================
CVSS Details
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-coreUpgrade kernel-debugUpgrade kernel-rt-coreUpgrade kernel-debug-develUpgrade kernel-cross-headersUpgrade kernel-modulesUpgrade python3-perfUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-modules-extraUpgrade kernelUpgrade kernel-coreUpgrade kernel-rt-debugUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-headersUpgrade kernel-develUpgrade kernel-zfcpdump-develUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-rt-modulesUpgrade kernel-tools-libs-develUpgrade kernel-zfcpdump-coreUpgrade kernel-rtUpgrade kernel-tools-libsUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade bpftoolUpgrade kernel-zfcpdumpUpgrade kernel-docUpgrade kernel-debug-modulesUpgrade kernel-rt-develUpgrade perfUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-modules | Jun 12, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libs | May 13, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernelUpgrade kernel-toolsUpgrade bpftool | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade bpftool | Jul 1, 2025 | Feb 26, 2025 |
| Oracle_linux | — | Upgrade kernel | Jun 30, 2025 | Feb 26, 2025 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jun 11, 2025 | Feb 26, 2025 |
| Rocky_linux | — | Upgrade kernel-rtUpgrade kernel-coreUpgrade kernel-rt-coreUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debug-debuginfoUpgrade kernel-toolsUpgrade kernel-cross-headersUpgrade kernel-rt-kvmUpgrade kernel-modules-extraUpgrade perfUpgrade kernel-rt-modulesUpgrade kernel-debugUpgrade kernel-tools-libsUpgrade kernel-rt-develUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-coreUpgrade kernel-develUpgrade kernel-rt-debugUpgrade python3-perfUpgrade bpftool-debuginfoUpgrade kernel-debug-modulesUpgrade kernel-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-coreUpgrade bpftoolUpgrade python3-perf-debuginfoUpgrade kernel-debug-debuginfoUpgrade kernelUpgrade kernel-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-debug-modules-extraUpgrade kernel-debug-develUpgrade perf-debuginfoUpgrade kernel-tools-libs-develUpgrade kernel-headersUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debuginfo-common-x86_64 | Jul 31, 2025 | Jul 29, 2025 |
| Ubuntu | — | Upgrade linux-aws-fipsUpgrade linux-gcp-5.15Upgrade linux-gkeUpgrade linux-nvidiaUpgrade linux-gcpUpgrade linux-riscv-5.15Upgrade linux-kvmUpgrade linux-intel-iotg-5.15Upgrade linux-aws-hweUpgrade linux-azure-5.15Upgrade linux-fipsUpgrade linux-ibmUpgrade linux-hwe-5.4Upgrade linux-oracle-5.15Upgrade linux-oracle-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-intel-iotgUpgrade linux-realtimeUpgrade linux-raspi-5.4Upgrade linux-oracleUpgrade linux-aws-5.15Upgrade linuxUpgrade linux-gcp-4.15Upgrade linux-azure-fipsUpgrade linux-gcp-5.4Upgrade linux-hwe-5.15Upgrade linux-azure-5.4Upgrade linux-gcp-fipsUpgrade linux-azureUpgrade linux-iotUpgrade linux-gkeopUpgrade linux-ibm-5.4Upgrade linux-hweUpgrade linux-raspiUpgrade linux-aws-5.4Upgrade linux-azure-4.15Upgrade linux-lowlatencyUpgrade linux-aws | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 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