CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL In
certain types of chips, such as VEGA20, reading the amdgpu_regs_smc file
could result in an abnormal null pointer access when the smc_rreg pointer
is NULL. Below are the steps to reproduce this issue and the corresponding
exception log: 1. Navigate to the directory: /sys/kernel/debug/dri/0 2.
Execute command: cat amdgpu_regs_smc 3. Exception Log:: [4005007.702554]
BUG: kernel NULL pointer dereference, address: 0000000000000000
[4005007.702562] #PF: supervisor instruction fetch in kernel mode
[4005007.702567] #PF: error_code(0x0010) - not-present page
[4005007.702570] PGD 0 P4D 0 [4005007.702576] Oops: 0010 [#1] SMP NOPTI
[4005007.702581] CPU: 4 PID: 62563 Comm: cat Tainted: G OE
5.15.0-43-generic #46-Ubunt u [4005007.702590] RIP: 0010:0x0
[4005007.702598] Code: Unable to access opcode bytes at RIP
0xffffffffffffffd6. [4005007.702600] RSP: 0018:ffffa82b46d27da0 EFLAGS:
00010206 [4005007.702605] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
ffffa82b46d27e68 [4005007.702609] RDX: 0000000000000001 RSI:
0000000000000000 RDI: ffff9940656e0000 [4005007.702612] RBP:
ffffa82b46d27dd8 R08: 0000000000000000 R09: ffff994060c07980
[4005007.702615] R10: 0000000000020000 R11: 0000000000000000 R12:
00007f5e06753000 [4005007.702618] R13: ffff9940656e0000 R14:
ffffa82b46d27e68 R15: 00007f5e06753000 [4005007.702622] FS:
00007f5e0755b740(0000) GS:ffff99479d300000(0000) knlGS:0000000000000000
[4005007.702626] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[4005007.702629] CR2: ffffffffffffffd6 CR3: 00000003253fc000 CR4:
00000000003506e0 [4005007.702633] Call Trace: [4005007.702636] <TASK>
[4005007.702640] amdgpu_debugfs_regs_smc_read+0xb0/0x120 [amdgpu]
[4005007.703002] full_proxy_read+0x5c/0x80 [4005007.703011]
vfs_read+0x9f/0x1a0 [4005007.703019] ksys_read+0x67/0xe0 [4005007.703023]
_x64_sys_read+0x19/0x20 [4005007.703028] do_syscall_64+0x5c/0xc0
[4005007.703034] ? do_user_addr_fault+0x1e3/0x670 [4005007.703040] ?
exit_to_user_mode_prepare+0x37/0xb0 [4005007.703047] ?
irqentry_exit_to_user_mode+0x9/0x20 [4005007.703052] ?
irqentry_exit+0x19/0x30 [4005007.703057] ? exc_page_fault+0x89/0x160
[4005007.703062] ? asm_exc_page_fault+0x8/0x30 [4005007.703068]
entry_SYSCALL_64_after_hwframe+0x44/0xae [4005007.703075] RIP:
0033:0x7f5e07672992 [4005007.703079] Code: c0 e9 b2 fe ff ff 50 48 8d 3d fa
b2 0c 00 e8 c5 1d 02 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00
85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 e c 28
48 89 54 24 [4005007.703083] RSP: 002b:00007ffe03097898 EFLAGS: 00000246
ORIG_RAX: 0000000000000000 [4005007.703088] RAX: ffffffffffffffda RBX:
0000000000020000 RCX: 00007f5e07672992 [4005007.703091] RDX:
0000000000020000 RSI: 00007f5e06753000 RDI: 0000000000000003
[4005007.703094] RBP: 00007f5e06753000 R08: 00007f5e06752010 R09:
00007f5e06752010 [4005007.703096] R10: 0000000000000022 R11:
0000000000000246 R12: 0000000000022000 [4005007.703099] R13:
0000000000000003 R14: 0000000000020000 R15: 0000000000020000
[4005007.703105] </TASK> [4005007.703107] Modules linked in: nf_tables
libcrc32c nfnetlink algif_hash af_alg binfmt_misc nls iso8859_1 ipmi_ssif
ast intel_rapl_msr intel_rapl_common drm_vram_helper drm_ttm_helper
amd64_edac t tm edac_mce_amd kvm_amd ccp mac_hid k10temp kvm acpi_ipmi
ipmi_si rapl sch_fq_codel ipmi_devintf ipm i_msghandler msr parport_pc
ppdev lp parport mtd pstore_blk efi_pstore ramoops pstore_zone reed_solo
mon ip_tables x_tables autofs4 ib_uverbs ib_core amdgpu(OE)
amddrm_ttm_helper(OE) amdttm(OE) iommu_v 2 amd_sched(OE) amdkcl(OE)
drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops cec rc_core
drm igb ahci xhci_pci libahci i2c_piix4 i2c_algo_bit xhci_pci_renesas dca
[4005007.703184] CR2: 0000000000000000 [4005007.703188] —[ en
—truncated—
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < any | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.15 | < any | UNKNOWN |
git.kernel.org/linus/5104fdf50d326db2c1a994f8b35dcd46e63ae4ad (6.7-rc1)
git.kernel.org/stable/c/174f62a0aa15c211e60208b41ee9e7cdfb73d455
git.kernel.org/stable/c/437e0fa907ba39b4d7eda863c03ea9cf48bd93a9
git.kernel.org/stable/c/5104fdf50d326db2c1a994f8b35dcd46e63ae4ad
git.kernel.org/stable/c/6c1b3d89a2dda79881726bb6e37af19c0936d736
git.kernel.org/stable/c/820daf9ffe2b0afb804567b10983fb38bc5ae288
git.kernel.org/stable/c/ba3c0796d292de84f2932cc5bbb0f771fc720996
git.kernel.org/stable/c/bf2d51eedf03bd61e3556e35d74d49e2e6112398
git.kernel.org/stable/c/f475d5502f33a6c5b149b0afe96316ad1962a64a
launchpad.net/bugs/cve/CVE-2023-52817
nvd.nist.gov/vuln/detail/CVE-2023-52817
security-tracker.debian.org/tracker/CVE-2023-52817
www.cve.org/CVERecord?id=CVE-2023-52817