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CVE-2022-50535— drm/amd/display: Fix potential null-deref in dm_resume

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，该漏洞源于未检查dc_link是否为空，可能导致空指针取消引用。

AI Predicted 4.4 Difficulty: Easy EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 22

VendorProduct Version RangeStatus
Linux Linux e0082f71e5d2481ce59d49dbfd3677f5fdc85836< fd79b61af2782f8875c78f50cdb8630ec43e2990 affected
dd9b4b435a56a7a29c7d1ccc6479847354842255< d236103782de25736996a45bd36ac2a89bdc93c6 affected
4b44cd5840577479ee6ed387371dd1d1252ca921< 9f73793b81637c60ccc83cc508645310b8ab7d80 affected
6a03581ccffa571bfa1a9f3a097e1a4d7164fd2d< bb9a5562beb982aa5ebb73c521c49596ff8b8030 affected
f4346fb3edf7720db3f7f5e1cab1f667cd024280< 8e365f1bd672cc9320a936f6ae6f8087aa40e9bc affected
f4346fb3edf7720db3f7f5e1cab1f667cd024280< 00b655fa96b4e941351cc4bf5ca755a65ae94a8e affected
f4346fb3edf7720db3f7f5e1cab1f667cd024280< 7a7175a2cd84b7874bebbf8e59f134557a34161b affected
2983416458b2e09f7246e8e55df78ccf5968693b affected
… +14 more rows
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I. Basic Information for CVE-2022-50535

Vulnerability Information
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Vulnerability Title
drm/amd/display: Fix potential null-deref in dm_resume
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix potential null-deref in dm_resume [Why] Fixing smatch error: dm_resume() error: we previously assumed 'aconnector->dc_link' could be null [How] Check if dc_link null at the beginning of the loop, so further checks can be dropped.
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，该漏洞源于未检查dc_link是否为空，可能导致空指针取消引用。
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 e0082f71e5d2481ce59d49dbfd3677f5fdc85836 ~ fd79b61af2782f8875c78f50cdb8630ec43e2990 -
Linux Linux 5.18 -

II. Public POCs for CVE-2022-50535

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III. Intelligence Information for CVE-2022-50535

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Patches & Fixes for CVE-2022-50535 (7)

Same Patch Batch · Linux · 2025-10-07 · 118 CVEs total

CVE-2023-53629 9.8 CRITICAL fs: dlm: fix use after free in midcomms commit
CVE-2023-53630 8.8 HIGH iommufd: Fix unpinning of pages when an access is present
CVE-2023-53676 8.8 HIGH scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show()
CVE-2023-53675 8.8 HIGH scsi: ses: Fix possible desc_ptr out-of-bounds accesses
CVE-2023-53673 8.8 HIGH Bluetooth: hci_event: call disconnect callback before deleting conn
CVE-2023-53679 8.3 HIGH wifi: mt7601u: fix an integer underflow
CVE-2023-53635 8.2 HIGH netfilter: conntrack: fix wrong ct->timeout value
CVE-2022-50555 7.8 HIGH tipc: fix a null-ptr-deref in tipc_topsrv_accept
CVE-2023-53659 7.8 HIGH iavf: Fix out-of-bounds when setting channels on remove
CVE-2023-53619 7.8 HIGH netfilter: conntrack: Avoid nf_ct_helper_hash uses after free
CVE-2023-53660 7.8 HIGH bpf, cpumap: Handle skb as well when clean up ptr_ring
CVE-2023-53643 7.8 HIGH nvme-tcp: don't access released socket during error recovery
CVE-2023-53645 7.8 HIGH bpf: Make bpf_refcount_acquire fallible for non-owning refs
CVE-2023-53646 7.8 HIGH drm/i915/perf: add sentinel to xehp_oa_b_counters
CVE-2023-53669 7.8 HIGH tcp: fix skb_copy_ubufs() vs BIG TCP
CVE-2023-53626 7.8 HIGH ext4: fix possible double unlock when moving a directory
CVE-2023-53627 7.8 HIGH scsi: hisi_sas: Grab sas_dev lock when traversing the members of sas_dev.list
CVE-2022-50528 7.8 HIGH drm/amdkfd: Fix memory leakage
CVE-2023-53683 7.8 HIGH fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode()
CVE-2022-50543 7.8 HIGH RDMA/rxe: Fix mr->map double free

Showing top 20 of 118 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-50535

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