In the Linux kernel, the following vulnerability has been resolved:
drm/i915/gem: Really move i915_gem_context.link under ref protection
i915_perf assumes that it can use the i915_gem_context reference to protect its i915->gem.contexts.list iteration. However, this requires that we do not remove the context from the list until after we drop the final reference and release the struct. If, as currently, we remove the context from the list during context_close(), the link.next pointer may be poisoned while we are holding the context reference and cause a GPF:
[ 4070.573157] i915 0000:00:02.0: [drm:i915_perf_open_ioctl [i915]] filtering on ctx_id=0x1fffff ctx_id_mask=0x1fffff [ 4070.574881] general protection fault, probably for non-canonical address 0xdead000000000100: 0000 [#1] PREEMPT SMP [ 4070.574897] CPU: 1 PID: 284392 Comm: amd_performance Tainted: G E 5.17.9 #180 [ 4070.574903] Hardware name: Intel Corporation NUC7i5BNK/NUC7i5BNB, BIOS BNKBL357.86A.0052.2017.0918.1346 09/18/2017 [ 4070.574907] RIP: 0010:oa_configure_all_contexts.isra.0+0x222/0x350 [i915] [ 4070.574982] Code: 08 e8 32 6e 10 e1 4d 8b 6d 50 b8 ff ff ff ff 49 83 ed 50 f0 41 0f c1 04 24 83 f8 01 0f 84 e3 00 00 00 85 c0 0f 8e fa 00 00 00 <49> 8b 45 50 48 8d 70 b0 49 8d 45 50 48 39 44 24 10 0f 85 34 fe ff [ 4070.574990] RSP: 0018:ffffc90002077b78 EFLAGS: 00010202 [ 4070.574995] RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000000 [ 4070.575000] RDX: 0000000000000001 RSI: ffffc90002077b20 RDI: ffff88810ddc7c68 [ 4070.575004] RBP: 0000000000000001 R08: ffff888103242648 R09: fffffffffffffffc [ 4070.575008] R10: ffffffff82c50bc0 R11: 0000000000025c80 R12: ffff888101bf1860 [ 4070.575012] R13: dead0000000000b0 R14: ffffc90002077c04 R15: ffff88810be5cabc [ 4070.575016] FS: 00007f1ed50c0780(0000) GS:ffff88885ec80000(0000) knlGS:0000000000000000 [ 4070.575021] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4070.575025] CR2: 00007f1ed5590280 CR3: 000000010ef6f005 CR4: 00000000003706e0 [ 4070.575029] Call Trace: [ 4070.575033] <TASK> [ 4070.575037] lrc_configure_all_contexts+0x13e/0x150 [i915] [ 4070.575103] gen8_enable_metric_set+0x4d/0x90 [i915] [ 4070.575164] i915_perf_open_ioctl+0xbc0/0x1500 [i915] [ 4070.575224] ? asm_common_interrupt+0x1e/0x40 [ 4070.575232] ? i915_oa_init_reg_state+0x110/0x110 [i915] [ 4070.575290] drm_ioctl_kernel+0x85/0x110 [ 4070.575296] ? update_load_avg+0x5f/0x5e0 [ 4070.575302] drm_ioctl+0x1d3/0x370 [ 4070.575307] ? i915_oa_init_reg_state+0x110/0x110 [i915] [ 4070.575382] ? gen8_gt_irq_handler+0x46/0x130 [i915] [ 4070.575445] __x64_sys_ioctl+0x3c4/0x8d0 [ 4070.575451] ? __do_softirq+0xaa/0x1d2 [ 4070.575456] do_syscall_64+0x35/0x80 [ 4070.575461] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 4070.575467] RIP: 0033:0x7f1ed5c10397 [ 4070.575471] Code: 3c 1c e8 1c ff ff ff 85 c0 79 87 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a9 da 0d 00 f7 d8 64 89 01 48 [ 4070.575478] RSP: 002b:00007ffd65c8d7a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 4070.575484] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f1ed5c10397 [ 4070.575488] RDX: 00007ffd65c8d7c0 RSI: 0000000040106476 RDI: 0000000000000006 [ 4070.575492] RBP: 00005620972f9c60 R08: 000000000000000a R09: 0000000000000005 [ 4070.575496] R10: 000000000000000d R11: 0000000000000246 R12: 000000000000000a [ 4070.575500] R13: 000000000000000d R14: 0000000000000000 R15: 00007ffd65c8d7c0 [ 4070.575505] </TASK> [ 4070.575507] Modules linked in: nls_ascii(E) nls_cp437(E) vfat(E) fat(E) i915(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) crct10dif_pclmul(E) crc32_pclmul(E) crc32c_intel(E) aesni_intel(E) crypto_simd(E) intel_gtt(E) cryptd(E) ttm(E) rapl(E) intel_cstate(E) drm_kms_helper(E) cfbfillrect(E) syscopyarea(E) cfbimgblt(E) intel_uncore(E) sysfillrect(E) mei_me(E) sysimgblt(E) i2c_i801(E) fb_sys_fops(E) mei(E) intel_pch_thermal(E) i2c_smbus ---truncated---
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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade perf-debuginfoUpgrade kernel-toolsUpgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.15.73-48.135Upgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade perfUpgrade kernelUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-develUpgrade kernel-tools-devel | Jun 11, 2024 | Apr 28, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Apr 28, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 28, 2024 |
| Suse | — | Upgrade dtb-nvidiaUpgrade dlm-kmp-defaultUpgrade kernel-kvmsmallUpgrade dtb-mediatekUpgrade dtb-xilinxUpgrade kernel-devel-azureUpgrade kernel-macrosUpgrade dtb-amlogicUpgrade kernel-defaultUpgrade kernel-devel-rtUpgrade kernel-symsUpgrade kernel-zfcpdumpUpgrade reiserfs-kmp-azureUpgrade reiserfs-kmp-rtUpgrade ocfs2-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-debug-livepatch-develUpgrade kernel-rt_debug-vdsoUpgrade kselftests-kmp-defaultUpgrade kernel-azure-livepatch-develUpgrade dtb-armUpgrade dtb-socionextUpgrade kernel-syms-rtUpgrade gfs2-kmp-64kbUpgrade kernel-obs-qaUpgrade kernel-default-base-rebuildUpgrade kernel-64kb-develUpgrade kernel-azure-vdsoUpgrade kernel-debugUpgrade kernel-rt-livepatch-develUpgrade kernel-rt_debugUpgrade dtb-apmUpgrade kernel-azure-develUpgrade dtb-rockchipUpgrade kernel-rt-develUpgrade kernel-kvmsmall-develUpgrade kernel-default-baseUpgrade cluster-md-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kernel-default-extraUpgrade kernel-docsUpgrade gfs2-kmp-rtUpgrade kernel-64kb-livepatch-develUpgrade kernel-64kb-optionalUpgrade dtb-hisiliconUpgrade dtb-qcomUpgrade dtb-amdUpgrade kernel-debug-vdsoUpgrade kernel-rt-extraUpgrade kernel-default-livepatchUpgrade kernel-syms-azureUpgrade kernel-azureUpgrade dtb-caviumUpgrade kernel-default-develUpgrade ocfs2-kmp-defaultUpgrade kernel-sourceUpgrade kernel-rt_debug-develUpgrade dlm-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-rtUpgrade kernel-64kbUpgrade gfs2-kmp-defaultUpgrade cluster-md-kmp-64kbUpgrade kernel-obs-buildUpgrade kernel-rt-livepatchUpgrade kernel-azure-optionalUpgrade kernel-develUpgrade kernel-source-rtUpgrade kernel-64kb-extraUpgrade dtb-sprdUpgrade dtb-allwinnerUpgrade dlm-kmp-64kbUpgrade ocfs2-kmp-azureUpgrade ocfs2-kmp-64kbUpgrade kernel-default-optionalUpgrade dtb-freescaleUpgrade dtb-broadcomUpgrade dtb-amazonUpgrade dtb-alteraUpgrade dtb-appleUpgrade cluster-md-kmp-rtUpgrade kselftests-kmp-64kbUpgrade cluster-md-kmp-azureUpgrade reiserfs-kmp-64kbUpgrade kernel-rt-optionalUpgrade dtb-exynosUpgrade dtb-marvellUpgrade dtb-renesasUpgrade kernel-docs-htmlUpgrade kernel-default-vdsoUpgrade kselftests-kmp-azureUpgrade dtb-lgUpgrade kernel-default-livepatch-develUpgrade kernel-debug-develUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-azure-extraUpgrade gfs2-kmp-azureUpgrade kernel-kvmsmall-vdsoUpgrade kernel-source-vanillaUpgrade reiserfs-kmp-defaultUpgrade kernel-source-azureUpgrade kernel-rt-vdso | Aug 9, 2024 | Apr 28, 2024 |
| Ubuntu | — | Upgrade linux-gkeopUpgrade linux-nvidiaUpgrade linux-lowlatencyUpgrade linux-azure-5.15Upgrade linux-oracle-5.15Upgrade linux-azure-fde-5.15Upgrade linux-oracleUpgrade linuxUpgrade linux-ibmUpgrade linux-intel-iotg-5.15Upgrade linux-azureUpgrade linux-awsUpgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-hwe-5.15Upgrade linux-gkeop-5.15Upgrade linux-realtimeUpgrade linux-aws-5.15Upgrade linux-riscv-5.15Upgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-azure-fdeUpgrade linux-gcp-5.15Upgrade linux-gcpUpgrade linux-kvm | Nov 19, 2024 | Apr 28, 2024 |
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