In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: fix use-after-free bug
The bug can be triggered by sending a single amdgpu_gem_userptr_ioctl to the AMDGPU DRM driver on any ASICs with an invalid address and size. The bug was reported by Joonkyo Jung <[email protected]>. For example the following code:
static void Syzkaller1(int fd) { struct drm_amdgpu_gem_userptr arg; int ret;
arg.addr = 0xffffffffffff0000; arg.size = 0x80000000; /*2 Gb*/ arg.flags = 0x7; ret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg); }
Due to the address and size are not valid there is a failure in amdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert-> check_shl_overflow, but we even the amdgpu_hmm_register failure we still call amdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address. The following stack is below when the issue is reproduced when Kazan is enabled:
[ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020 [ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340 [ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80 [ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246 [ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b [ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260 [ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25 [ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00 [ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260 [ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000 [ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0 [ +0.000010] Call Trace: [ +0.000006] <TASK> [ +0.000007] ? show_regs+0x6a/0x80 [ +0.000018] ? __warn+0xa5/0x1b0 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [ +0.000018] ? report_bug+0x24a/0x290 [ +0.000022] ? handle_bug+0x46/0x90 [ +0.000015] ? exc_invalid_op+0x19/0x50 [ +0.000016] ? asm_exc_invalid_op+0x1b/0x20 [ +0.000017] ? kasan_save_stack+0x26/0x50 [ +0.000017] ? mmu_interval_notifier_remove+0x23b/0x340 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [ +0.000019] ? mmu_interval_notifier_remove+0x23b/0x340 [ +0.000020] ? __pfx_mmu_interval_notifier_remove+0x10/0x10 [ +0.000017] ? kasan_save_alloc_info+0x1e/0x30 [ +0.000018] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? __kasan_kmalloc+0xb1/0xc0 [ +0.000018] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? __kasan_check_read+0x11/0x20 [ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu] [ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu] [ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu] [ +0.004291] ? do_syscall_64+0x5f/0xe0 [ +0.000023] ? srso_return_thunk+0x5/0x5f [ +0.000017] drm_gem_object_free+0x3b/0x50 [drm] [ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu] [ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004270] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? __this_cpu_preempt_check+0x13/0x20 [ +0.000015] ? srso_return_thunk+0x5/0x5f [ +0.000013] ? sysvec_apic_timer_interrupt+0x57/0xc0 [ +0.000020] ? srso_return_thunk+0x5/0x5f [ +0.000014] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ +0.000022] ? drm_ioctl_kernel+0x17b/0x1f0 [drm] [ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm] [ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm] [ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d ---truncated---
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-cross-headersUpgrade perfUpgrade kernel-rt-kvmUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-rtUpgrade kernel-rt-modules-extraUpgrade kernel-toolsUpgrade bpftoolUpgrade kernelUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libs-develUpgrade kernel-rt-develUpgrade kernel-modules-extraUpgrade kernel-docUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debugUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdump-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-modulesUpgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-debug-develUpgrade kernel-rt-modulesUpgrade kernel-headersUpgrade kernel-modulesUpgrade kernel-tools-libsUpgrade kernel-rt-coreUpgrade kernel-coreUpgrade kernel-devel | Jul 3, 2024 | Apr 2, 2024 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Apr 14, 2025 | Apr 2, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade bpftool | Jun 26, 2024 | Apr 2, 2024 |
| Oracle_linux | — | Upgrade kernel | Jul 3, 2024 | Apr 2, 2024 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Jul 3, 2024 | Apr 2, 2024 |
| Rocky_linux | — | Upgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernelUpgrade python3-perfUpgrade kernel-cross-headersUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modules-extraUpgrade bpftoolUpgrade kernel-rtUpgrade perfUpgrade kernel-rt-kvmUpgrade kernel-modules-extraUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debugUpgrade bpftool-debuginfoUpgrade kernel-rt-develUpgrade kernel-debug-develUpgrade kernel-rt-coreUpgrade kernel-headersUpgrade kernel-debug-debuginfoUpgrade kernel-rt-debug-debuginfoUpgrade kernel-tools-libsUpgrade kernel-rt-modulesUpgrade kernel-modulesUpgrade kernel-coreUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-debug-coreUpgrade kernel-rt-debug-kvmUpgrade kernel-rt-debug-develUpgrade kernel-debugUpgrade python3-perf-debuginfoUpgrade kernel-debug-modules-extraUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-modulesUpgrade kernel-rt-debuginfoUpgrade kernel-tools-debuginfo | Jul 16, 2024 | Apr 2, 2024 |
| Suse | — | Upgrade reiserfs-kmp-64kbUpgrade reiserfs-kmp-defaultUpgrade kernel-defaultUpgrade dtb-freescaleUpgrade dtb-lgUpgrade ocfs2-kmp-defaultUpgrade ocfs2-kmp-azureUpgrade kselftests-kmp-azureUpgrade kernel-rt-optionalUpgrade kernel-obs-buildUpgrade kernel-default-develUpgrade dtb-broadcomUpgrade dtb-amdUpgrade kernel-debug-vdsoUpgrade kernel-azure-extraUpgrade kernel-64kb-develUpgrade dtb-rockchipUpgrade dtb-allwinnerUpgrade kselftests-kmp-64kbUpgrade kernel-source-azureUpgrade kernel-azure-optionalUpgrade kernel-develUpgrade kernel-azureUpgrade dtb-renesasUpgrade kernel-source-vanillaUpgrade kernel-rt_debug-livepatch-develUpgrade ocfs2-kmp-64kbUpgrade kernel-rt-develUpgrade dtb-xilinxUpgrade kernel-rt_debug-develUpgrade kernel-rt-vdsoUpgrade kernel-default-livepatchUpgrade kernel-source-rtUpgrade dlm-kmp-rtUpgrade kernel-default-optionalUpgrade dtb-caviumUpgrade kernel-default-baseUpgrade dtb-amazonUpgrade kernel-rt-extraUpgrade kernel-default-vdsoUpgrade kernel-default-livepatch-develUpgrade gfs2-kmp-defaultUpgrade kernel-rt-livepatchUpgrade cluster-md-kmp-rtUpgrade kernel-debug-develUpgrade gfs2-kmp-azureUpgrade dtb-nvidiaUpgrade dtb-hisiliconUpgrade dtb-exynosUpgrade dtb-alteraUpgrade cluster-md-kmp-64kbUpgrade dlm-kmp-64kbUpgrade kernel-64kb-extraUpgrade dtb-sprdUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-sourceUpgrade kernel-debugUpgrade kernel-docs-htmlUpgrade dtb-appleUpgrade kernel-rt-livepatch-develUpgrade dtb-amlogicUpgrade kernel-rt_debugUpgrade dtb-mediatekUpgrade kernel-rtUpgrade kernel-64kbUpgrade gfs2-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-64kb-optionalUpgrade kernel-zfcpdumpUpgrade ocfs2-kmp-rtUpgrade dlm-kmp-defaultUpgrade kernel-debug-livepatch-develUpgrade gfs2-kmp-64kbUpgrade kernel-default-base-rebuildUpgrade kernel-default-extraUpgrade kernel-kvmsmall-vdsoUpgrade kernel-syms-rtUpgrade kselftests-kmp-rtUpgrade reiserfs-kmp-rtUpgrade kernel-azure-vdsoUpgrade kernel-syms-azureUpgrade dtb-armUpgrade kernel-rt_debug-vdsoUpgrade kernel-azure-develUpgrade dtb-marvellUpgrade dtb-apmUpgrade dtb-socionextUpgrade kernel-kvmsmallUpgrade kernel-devel-azureUpgrade kernel-macrosUpgrade kernel-64kb-livepatch-develUpgrade dtb-qcomUpgrade reiserfs-kmp-azureUpgrade kernel-docsUpgrade kernel-kvmsmall-develUpgrade kernel-devel-rtUpgrade cluster-md-kmp-azureUpgrade cluster-md-kmp-defaultUpgrade kernel-azure-livepatch-develUpgrade kernel-obs-qaUpgrade kernel-symsUpgrade kselftests-kmp-default | May 15, 2024 | Apr 2, 2024 |
| Ubuntu | — | Upgrade linux-image-virtualUpgrade linux-image-6.8.0-1006-oracleUpgrade linux-image-6.8.0-1008-gcpUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-azureUpgrade linux-image-6.8.0-1006-oemUpgrade linux-image-kvmUpgrade linux-image-gcpUpgrade linux-image-6.8.0-1009-awsUpgrade linux-image-6.8.0-35-lowlatency-64kUpgrade linux-image-6.8.0-1008-azure-fdeUpgrade linux-image-6.8.0-1006-oracle-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-6.8.0-35-genericUpgrade linux-image-azure-fdeUpgrade linux-image-oracle-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-awsUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-oem-24.04Upgrade linux-image-oracleUpgrade linux-image-genericUpgrade linux-image-6.8.0-1004-gkeUpgrade linux-image-lowlatency-64kUpgrade linux-image-raspiUpgrade linux-image-6.8.0-35-lowlatencyUpgrade linux-image-lowlatencyUpgrade linux-image-6.8.0-1008-azureUpgrade linux-image-ibmUpgrade linux-image-generic-64kUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1005-raspiUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-1006-ibmUpgrade linux-image-6.8.0-35-generic-64k | Jul 1, 2024 | Apr 2, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Apr 2, 2024 |
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