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CVE-2024-26647— drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()'

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于空指针取消引用。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 6ca7415f11af5200ab10bd420b513f846e9bfb99< 6aa5ede6665122f4c8abce3c6eba06b49e54d25c affected
6ca7415f11af5200ab10bd420b513f846e9bfb99< cf656fc7276e5b3709a81bc9d9639459be2b2647 affected
6ca7415f11af5200ab10bd420b513f846e9bfb99< 3bb9b1f958c3d986ed90a3ff009f1e77e9553207 affected
6.3 affected
< 6.3 unaffected
6.6.15≤ 6.6.* unaffected
6.7.3≤ 6.7.* unaffected
6.8≤ * unaffected
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I. Basic Information for CVE-2024-26647

Vulnerability Information
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Vulnerability Title
drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()'
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix late derefrence 'dsc' check in 'link_set_dsc_pps_packet()' In link_set_dsc_pps_packet(), 'struct display_stream_compressor *dsc' was dereferenced in a DC_LOGGER_INIT(dsc->ctx->logger); before the 'dsc' NULL pointer check. Fixes the below: drivers/gpu/drm/amd/amdgpu/../display/dc/link/link_dpms.c:905 link_set_dsc_pps_packet() warn: variable dereferenced before check 'dsc' (see line 903)
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，该漏洞源于空指针取消引用。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 6ca7415f11af5200ab10bd420b513f846e9bfb99 ~ 6aa5ede6665122f4c8abce3c6eba06b49e54d25c -
Linux Linux 6.3 -

II. Public POCs for CVE-2024-26647

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III. Intelligence Information for CVE-2024-26647

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Other References for CVE-2024-26647 (3)

Same Patch Batch · Linux · 2024-03-26 · 13 CVEs total

CVE-2023-52623 7.8 HIGH SUNRPC: Fix a suspicious RCU usage warning
CVE-2024-26646 7.8 HIGH thermal: intel: hfi: Add syscore callbacks for system-wide PM
CVE-2024-26644 btrfs: don't abort filesystem when attempting to snapshot deleted subvolume
CVE-2024-26645 tracing: Ensure visibility when inserting an element into tracing_map
CVE-2023-52621 bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
CVE-2023-52622 ext4: avoid online resizing failures due to oversized flex bg
CVE-2023-52624 drm/amd/display: Wake DMCUB before executing GPINT commands
CVE-2023-52625 drm/amd/display: Refactor DMCUB enter/exit idle interface
CVE-2023-52626 net/mlx5e: Fix operation precedence bug in port timestamping napi_poll context
CVE-2023-52627 iio: adc: ad7091r: Allow users to configure device events
CVE-2024-26648 drm/amd/display: Fix variable deferencing before NULL check in edp_setup_replay()
CVE-2024-26649 drm/amdgpu: Fix the null pointer when load rlc firmware

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26647

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