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CVE-2021-47348— drm/amd/display: Avoid HDCP over-read and corruption

AI Predicted 4.3 Difficulty: Hard EPSS 0.99% · P59

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProductVersion RangeStatus
LinuxLinux4c283fdac08abf3211533f70623c90a34f41d08d< c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2eaffected
4c283fdac08abf3211533f70623c90a34f41d08d< 44c7c901cb368a9f2493748f213b247b5872639faffected
4c283fdac08abf3211533f70623c90a34f41d08d< 3b2b93a485fb7a970bc8b5daef16f4cf579d172faffected
4c283fdac08abf3211533f70623c90a34f41d08d< 06888d571b513cbfc0b41949948def6cb81021b2affected
5.5affected
< 5.5unaffected
5.10.51≤ 5.10.*unaffected
5.12.18≤ 5.12.*unaffected
… +2 more rows
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I. Basic Information for CVE-2021-47348

Vulnerability Information
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Vulnerability Title
drm/amd/display: Avoid HDCP over-read and corruption
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid HDCP over-read and corruption Instead of reading the desired 5 bytes of the actual target field, the code was reading 8. This could result in a corrupted value if the trailing 3 bytes were non-zero, so instead use an appropriately sized and zero-initialized bounce buffer, and read only 5 bytes before casting to u64.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于HDCP 过度读取和损坏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux 4c283fdac08abf3211533f70623c90a34f41d08d ~ c5b518f4b98dbb2bc31b6a55e6aaa1e0e2948f2e -
LinuxLinux 5.5 -

II. Public POCs for CVE-2021-47348

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III. Intelligence Information for CVE-2021-47348

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Other References for CVE-2021-47348 (3)

Same Patch Batch · Linux · 2024-05-21 · 361 CVEs total

CVE-2023-527329.8 CRITICALceph: blocklist the kclient when receiving corrupted snap trace
CVE-2023-527559.8 CRITICALksmbd: fix slab out of bounds write in smb_inherit_dacl()
CVE-2021-473289.8 CRITICALscsi: iscsi: Fix conn use after free during resets
CVE-2023-527419.8 CRITICALcifs: Fix use-after-free in rdata->read_into_pages()
CVE-2021-473789.8 CRITICALnvme-rdma: destroy cm id before destroy qp to avoid use after free
CVE-2021-472329.8 CRITICALcan: j1939: fix Use-after-Free, hold skb ref while in use
CVE-2021-474279.8 CRITICALscsi: iscsi: Fix iscsi_task use after free
CVE-2023-528468.8 HIGHhsr: Prevent use after free in prp_create_tagged_frame()
CVE-2023-528018.8 HIGHiommufd: Fix missing update of domains_itree after splitting iopt_area
CVE-2023-527988.8 HIGHwifi: ath11k: fix dfs radar event locking
CVE-2021-473888.8 HIGHmac80211: fix use-after-free in CCMP/GCMP RX
CVE-2021-473908.8 HIGHKVM: x86: Fix stack-out-of-bounds memory access from ioapic_write_indirect()
CVE-2023-527908.8 HIGHswiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC
CVE-2023-527698.8 HIGHwifi: ath12k: fix htt mlo-offset event locking
CVE-2023-527768.8 HIGHwifi: ath12k: fix dfs-radar and temperature event locking
CVE-2021-473088.8 HIGHscsi: libfc: Fix array index out of bound exception
CVE-2023-528298.4 HIGHwifi: ath12k: fix possible out-of-bound write in ath12k_wmi_ext_hal_reg_caps()
CVE-2021-472408.4 HIGHnet: qrtr: fix OOB Read in qrtr_endpoint_post
CVE-2021-473528.4 HIGHvirtio-net: Add validation for used length
CVE-2021-472448.2 HIGHmptcp: Fix out of bounds when parsing TCP options

Showing top 20 of 361 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47348

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