In the Linux kernel, the following vulnerability has been resolved:
proc: fix UAF in proc_get_inode()
Fix race between rmmod and /proc/XXX's inode instantiation.
The bug is that pde->proc_ops don't belong to /proc, it belongs to a module, therefore dereferencing it after /proc entry has been registered is a bug unless use_pde/unuse_pde() pair has been used.
use_pde/unuse_pde can be avoided (2 atomic ops!) because pde->proc_ops never changes so information necessary for inode instantiation can be saved _before_ proc_register() in PDE itself and used later, avoiding pde->proc_ops->... dereference.
rmmod lookup sys_delete_module proc_lookup_de pde_get(de); proc_get_inode(dir->i_sb, de); mod->exit() proc_remove remove_proc_subtree proc_entry_rundown(de); free_module(mod);
if (S_ISREG(inode->i_mode)) if (de->proc_ops->proc_read_iter) --> As module is already freed, will trigger UAF
BUG: unable to handle page fault for address: fffffbfff80a702b PGD 817fc4067 P4D 817fc4067 PUD 817fc0067 PMD 102ef4067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 26 UID: 0 PID: 2667 Comm: ls Tainted: G Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:proc_get_inode+0x302/0x6e0 RSP: 0018:ffff88811c837998 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffffffffc0538140 RCX: 0000000000000007 RDX: 1ffffffff80a702b RSI: 0000000000000001 RDI: ffffffffc0538158 RBP: ffff8881299a6000 R08: 0000000067bbe1e5 R09: 1ffff11023906f20 R10: ffffffffb560ca07 R11: ffffffffb2b43a58 R12: ffff888105bb78f0 R13: ffff888100518048 R14: ffff8881299a6004 R15: 0000000000000001 FS: 00007f95b9686840(0000) GS:ffff8883af100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff80a702b CR3: 0000000117dd2000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> proc_lookup_de+0x11f/0x2e0 __lookup_slow+0x188/0x350 walk_component+0x2ab/0x4f0 path_lookupat+0x120/0x660 filename_lookup+0x1ce/0x560 vfs_statx+0xac/0x150 __do_sys_newstat+0x96/0x110 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e
[[email protected]: don't do 2 atomic ops on the common path]
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-debug-modules-coreUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-rt-debug-kvmUpgrade kernel-uki-virtUpgrade kernel-docUpgrade kernel-debug-uki-virtUpgrade kernel-debug-modules-extraUpgrade kernel-develUpgrade kernel-modules-coreUpgrade kernel-rt-64k-develUpgrade kernel-debugUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-develUpgrade kernel-64k-modules-coreUpgrade kernel-coreUpgrade kernel-64k-develUpgrade kernel-debug-coreUpgrade kernel-64k-coreUpgrade kernel-zfcpdumpUpgrade kernel-64k-debug-develUpgrade kernel-64k-modules-extraUpgrade kernel-64k-debug-modulesUpgrade kernel-rt-64k-modules-coreUpgrade kernel-tools-libsUpgrade kernel-debug-modulesUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-64k-debug-modules-coreUpgrade kernel-headersUpgrade kernel-zfcpdump-modulesUpgrade kernel-modulesUpgrade kernel-modules-extraUpgrade kernel-rt-debugUpgrade kernel-debug-develUpgrade rtlaUpgrade kernel-rt-modulesUpgrade kernel-rt-64k-coreUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-modules-coreUpgrade perfUpgrade kernel-64k-debug-coreUpgrade kernelUpgrade python3-perfUpgrade kernel-devel-matchedUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-cross-headersUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rtUpgrade kernel-64k-modulesUpgrade kernel-64k-debugUpgrade kernel-rt-64k-modulesUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-toolsUpgrade rvUpgrade kernel-tools-libs-develUpgrade kernel-abi-stablelistsUpgrade kernel-rt-64k-debug-develUpgrade kernel-64k-devel-matchedUpgrade kernel-rt-coreUpgrade kernel-64kUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-rt-kvmUpgrade kernel-uki-virt-addonsUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-coreUpgrade libperfUpgrade kernel-rt-64kUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-modules-extraUpgrade kernel-rt-64k-debugUpgrade kernel-rt-64k-modules-extra | Jul 4, 2025 | Apr 3, 2025 |
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.15.180-122.191Upgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-toolsUpgrade kernel-livepatch-5.10.236-227.928Upgrade bpftoolUpgrade bpftool-debuginfoUpgrade python-perfUpgrade perf | Apr 30, 2025 | Apr 3, 2025 |
| Amazon_linux_2023 | — | Upgrade kernel-toolsUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-modules-extraUpgrade kernel6.12Upgrade perf6.12Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-libbpf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-libbpfUpgrade perf-debuginfoUpgrade kernel-livepatch-6.12.22-27.96Upgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel6.12-modules-extraUpgrade python3-perf-debuginfoUpgrade python3-perfUpgrade kernel-livepatch-6.1.132-147.221Upgrade perfUpgrade python3-perf6.12-debuginfoUpgrade kernel-tools-develUpgrade kernel-libbpf-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel6.12-debuginfoUpgrade kernel-develUpgrade perf6.12-debuginfoUpgrade kernel-libbpf-staticUpgrade kernelUpgrade python3-perf6.12Upgrade kernel-modules-extra-common | May 14, 2025 | Apr 3, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Apr 14, 2025 | Apr 3, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libs | Jul 11, 2025 | Apr 3, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernelUpgrade bpftool | Jun 13, 2025 | Apr 3, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade bpftoolUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perf | Jun 11, 2025 | Apr 3, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Jul 1, 2025 | Apr 3, 2025 |
| Oracle_linux | — | Upgrade kernel | Jun 30, 2025 | Apr 3, 2025 |
| Redhat_linux | — | Upgrade kernel-rtNo solution existsUpgrade kernel | Jun 17, 2025 | Apr 3, 2025 |
| Rocky_linux | — | Upgrade kernel-rt-kvmUpgrade kernel-cross-headersUpgrade kernel-debugUpgrade kernel-rt-debug-kvmUpgrade rtlaUpgrade kernel-coreUpgrade kernel-rt-develUpgrade kernel-rt-modules-extraUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade perf-debuginfoUpgrade kernel-debug-coreUpgrade python3-perf-debuginfoUpgrade kernel-modulesUpgrade kernel-rt-debug-debuginfoUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debug-uki-virtUpgrade kernel-rt-debugUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-zfcpdump-develUpgrade perfUpgrade kernel-rt-coreUpgrade kernelUpgrade python3-perfUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-develUpgrade kernel-debuginfoUpgrade kernel-tools-libsUpgrade kernel-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernel-rt-modulesUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-zfcpdump-modulesUpgrade rvUpgrade libperf-debuginfoUpgrade kernel-uki-virtUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rtUpgrade kernel-headersUpgrade kernel-debug-modulesUpgrade kernel-debuginfo-common-s390xUpgrade kernel-zfcpdumpUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-debug-modules-extraUpgrade kernel-debug-devel-matchedUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-debuginfoUpgrade kernel-modules-coreUpgrade kernel-debug-debuginfoUpgrade libperfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-modules-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debug-modules-coreUpgrade kernel-devel-matchedUpgrade kernel-rt-debug-core | Oct 6, 2025 | Oct 3, 2025 |
| Suse | — | Upgrade kernel-kvmsmall-vdsoUpgrade cluster-md-kmp-rtUpgrade kernel-default-baseUpgrade kselftests-kmp-defaultUpgrade gfs2-kmp-defaultUpgrade dtb-sprdUpgrade kernel-source-rtUpgrade kernel-rt-vdsoUpgrade dtb-rockchipUpgrade reiserfs-kmp-defaultUpgrade ocfs2-kmp-defaultUpgrade kernel-preempt-develUpgrade dtb-renesasUpgrade kernel-source-vanillaUpgrade reiserfs-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-azureUpgrade kernel-rt-optionalUpgrade kernel-64kb-extraUpgrade dtb-armUpgrade kselftests-kmp-rtUpgrade dlm-kmp-azureUpgrade ocfs2-kmp-azureUpgrade kernel-default-base-rebuildUpgrade dtb-nvidiaUpgrade kernel-rt_debug-develUpgrade dtb-socionextUpgrade kernel-rt-extraUpgrade kernel-obs-buildUpgrade kernel-debug-vdsoUpgrade gfs2-kmp-azureUpgrade kernel-default-livepatch-develUpgrade kernel-develUpgrade kernel-64kb-optionalUpgrade kernel-azure-vdsoUpgrade kernel-macrosUpgrade kernel-obs-qaUpgrade kernel-kvmsmallUpgrade ocfs2-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-default-livepatchUpgrade kernel-sourceUpgrade kernel-default-extraUpgrade kernel-azure-optionalUpgrade dtb-amlogicUpgrade kernel-syms-rtUpgrade kernel-default-develUpgrade kernel-azure-extraUpgrade kernel-preemptUpgrade gfs2-kmp-64kbUpgrade dtb-marvellUpgrade dlm-kmp-64kbUpgrade kernel-zfcpdumpUpgrade dtb-qcomUpgrade kernel-symsUpgrade kernel-syms-azureUpgrade kernel-kvmsmall-develUpgrade kernel-debugUpgrade kernel-devel-azureUpgrade dtb-lgUpgrade dtb-exynosUpgrade kernel-rt-livepatch-develUpgrade cluster-md-kmp-azureUpgrade dtb-apmUpgrade dtb-hisiliconUpgrade dtb-appleUpgrade dtb-amazonUpgrade dtb-alteraUpgrade kernel-default-vdsoUpgrade gfs2-kmp-rtUpgrade kernel-debug-develUpgrade kernel-rt_debug-vdsoUpgrade kernel-rtUpgrade kernel-docs-htmlUpgrade kernel-64kbUpgrade dtb-xilinxUpgrade kernel-devel-rtUpgrade dtb-mediatekUpgrade dtb-freescaleUpgrade ocfs2-kmp-rtUpgrade kselftests-kmp-64kbUpgrade cluster-md-kmp-defaultUpgrade kernel-azure-develUpgrade kernel-64kb-develUpgrade dtb-broadcom | Dec 5, 2025 | Jun 19, 2025 |
| Ubuntu | — | Upgrade linux-image-oem-24.04bUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-awsUpgrade linux-image-azure-6.11Upgrade linux-image-ibm-classicUpgrade linux-image-5.15.0-1086-aws-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-6.11.0-1016-gcp-64kUpgrade linux-image-6.11.0-1018-azure-fdeUpgrade linux-image-6.8.0-84-lowlatencyUpgrade linux-image-5.15.0-1078-ibmUpgrade linux-image-5.15.0-142-genericUpgrade linux-image-6.8.0-85-genericUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-oem-22.04Upgrade linux-image-6.8.1-1034-realtimeUpgrade linux-image-6.8.0-85-generic-64kUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-5.15.0-1080-raspiUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-6.8.0-1037-ibmUpgrade linux-image-ibm-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-6.8.0-1037-oracleUpgrade linux-image-fipsUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-ibmUpgrade linux-image-oem-20.04dUpgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1039-nvidia-lowlatencyUpgrade linux-image-gke-5.15Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-gcp-6.8Upgrade linux-image-azure-fde-6.8Upgrade linux-image-5.15.0-1068-gkeopUpgrade linux-image-6.8.0-84-lowlatency-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1038-azureUpgrade linux-image-5.15.0-1083-gkeUpgrade linux-image-azure-fde-6.11Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-5.15.0-1080-nvidia-lowlatencyUpgrade linux-image-6.8.0-1040-gcpUpgrade linux-image-aws-64kUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-6.8.0-84-generic-64kUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1036-gke-64kUpgrade linux-image-gkeop-6.8Upgrade linux-image-6.11.0-1011-realtimeUpgrade linux-image-6.11.0-1015-lowlatencyUpgrade linux-image-azure-cvmUpgrade linux-image-oem-20.04Upgrade linux-image-azure-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-6.11.0-28-genericUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-6.11.0-1018-azureUpgrade linux-image-realtimeUpgrade linux-image-generic-6.8Upgrade linux-image-raspi-nolpaeUpgrade linux-image-oem-22.04bUpgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.8.0-1039-nvidia-64kUpgrade linux-image-5.15.0-142-generic-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-oracleUpgrade linux-image-lowlatencyUpgrade linux-image-virtualUpgrade linux-image-gkeUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1039-nvidiaUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-nvidia-64kUpgrade linux-image-oracle-64kUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-intelUpgrade linux-image-raspi-realtimeUpgrade linux-image-5.15.0-142-generic-lpaeUpgrade linux-image-6.8.0-84-genericUpgrade linux-image-5.15.0-1085-gcpUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-6.8.0-2031-raspi-realtimeUpgrade linux-image-azure-lts-22.04Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.8.0-1025-azure-nvidiaUpgrade linux-image-nvidia-tegraUpgrade linux-image-azure-nvidia-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-5.15.0-1085-gcp-fipsUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-oem-22.04cUpgrade linux-image-raspiUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-generic-64k-6.8Upgrade linux-image-6.8.0-1036-gkeUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-kvmUpgrade linux-image-6.8.0-1036-azureUpgrade linux-image-6.8.0-1037-oracle-64kUpgrade linux-image-5.15.0-1079-intel-iot-realtimeUpgrade linux-image-5.15.0-1028-nvidia-tegra-igxUpgrade linux-image-lowlatency-6.8Upgrade linux-image-5.15.0-1086-awsUpgrade linux-image-gke-64kUpgrade linux-image-6.11.0-1016-gcpUpgrade linux-image-lowlatency-64k-6.11Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-5.15.0-1039-nvidia-tegraUpgrade linux-image-6.8.0-1039-aws-64kUpgrade linux-image-5.15.0-142-fipsUpgrade linux-image-5.15.0-1091-azureUpgrade linux-image-6.8.0-1039-awsUpgrade linux-image-6.8.0-1040-gcp-64kUpgrade linux-image-raspi-6.8Upgrade linux-image-oem-20.04bUpgrade linux-image-genericUpgrade linux-image-5.15.0-1028-nvidia-tegra-igx-rtUpgrade linux-image-6.11.0-1014-raspiUpgrade linux-image-5.15.0-1086-aws-fipsUpgrade linux-image-5.15.0-1083-intel-iotgUpgrade linux-image-5.15.0-1050-xilinx-zynqmpUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gkeopUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-azure-nvidiaUpgrade linux-image-azureUpgrade linux-image-aws-6.8Upgrade linux-image-5.15.0-1083-oracleUpgrade linux-image-6.8.0-1039-raspiUpgrade linux-image-5.15.0-1080-nvidiaUpgrade linux-image-nvidia-6.8Upgrade linux-image-oracle-6.8Upgrade linux-image-6.11.0-1015-awsUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-6.8.0-1036-azure-fdeUpgrade linux-image-6.11.0-1015-lowlatency-64kUpgrade linux-image-5.15.0-1039-nvidia-tegra-rtUpgrade linux-image-5.15.0-1081-intel-iotgUpgrade linux-image-azure-fdeUpgrade linux-image-6.8.0-1039-nvidia-lowlatency-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-gke-6.8Upgrade linux-image-gcp-fipsUpgrade linux-image-azure-nvidia-lts-24.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1038-azure-fdeUpgrade linux-image-5.15.0-1091-azure-fipsUpgrade linux-image-oem-22.04dUpgrade linux-image-azure-fde-edgeUpgrade linux-image-6.11.0-1017-oracle-64kUpgrade linux-image-aws-fipsUpgrade linux-image-5.15.0-142-lowlatency-64kUpgrade linux-image-6.11.0-1024-oemUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1023-gkeopUpgrade linux-image-6.11.0-28-generic-64kUpgrade linux-image-6.11.0-1017-oracleUpgrade linux-image-5.15.0-142-lowlatencyUpgrade linux-image-5.15.0-1086-realtimeUpgrade linux-image-5.15.0-1082-kvmUpgrade linux-image-oem-20.04cUpgrade linux-image-virtual-6.8Upgrade linux-image-nvidiaUpgrade linux-image-gke-64k-6.8Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-generic-64kUpgrade linux-image-gcp-64kUpgrade linux-image-azure-fipsUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-lowlatency-6.11Upgrade linux-image-gkeop-5.15 | Jun 20, 2025 | Apr 3, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Apr 3, 2025 |
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