阿里云漏洞库

漏洞描述

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---

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
https://git.kernel.org/stable/c/713fa3e4591f65f804bdc88e8648e219fabc9ee1
https://git.kernel.org/stable/c/d119888b09bd567e07c6b93a07f175df88857e02
https://git.kernel.org/stable/c/f799e0568d6c153368b177e0bbbde7dcc4ce7f1d

受影响软件情况

1
#	类型	厂商	产品	版本	影响面
	运行在以下环境
	系统	debian_10	linux	*		Up to (excluding) 4.19.304-1
	运行在以下环境
	系统	debian_11	linux	*		Up to (excluding) 5.10.209-2
	运行在以下环境
	系统	debian_12	linux	*		Up to (excluding) 6.0.2-1
	运行在以下环境
	系统	linux	linux_kernel	*	From (including) 5.15	Up to (excluding) 5.15.71
	运行在以下环境
	系统	linux	linux_kernel	*	From (including) 5.16	Up to (excluding) 5.19.12

攻击路径

本地
攻击复杂度

复杂
权限要求

普通权限
影响范围

越权影响
EXP成熟度

未验证
补丁情况

官方补丁
数据保密性

无影响
数据完整性

无影响
服务器危害

无影响
全网数量

N/A

CWE-ID	漏洞类型
NVD-CWE-noinfo

中危 drm/i915/gem：确实将 i915_gem_context.link 移动到引用保护下 (CVE-2022-48662)

漏洞描述

解决建议

参考链接

受影响软件情况