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CVE-2022-49055— drm/amdkfd: Check for potential null return of kmalloc_array()

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kmalloc_array可能返回空指针，导致空指针取消引用。

AI Predicted 5.5 Difficulty: Easy EPSS 0.26% · P18

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux f3a398183f7b9ef78f6b71ee9f7641e046403bcb< 32cf90a521dcc0f136db7ee5ba32bfe5f79e460e affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< 40bf32dbfef866c83a3e74800b81d79e52b6d20b affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< 94869bb0de69a812f70231b0eb480bb2f7ae73a6 affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< c7a268b33882d5feaafd29c1734456f41ba41396 affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< 1d7a5aae884ca727d41c7ed15d4c82fdb67c040c affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< f2658d5966bcee8c3eb487875f459756d4f7cdfc affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< 0a692c625e373fef692ffbc7fc41f8a025f01cb7 affected
f3a398183f7b9ef78f6b71ee9f7641e046403bcb< ebbb7bb9e80305820dc2328a371c1b35679f2667 affected
… +10 more rows
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I. Basic Information for CVE-2022-49055

Vulnerability Information
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Vulnerability Title
drm/amdkfd: Check for potential null return of kmalloc_array()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check for potential null return of kmalloc_array() As the kmalloc_array() may return null, the 'event_waiters[i].wait' would lead to null-pointer dereference. Therefore, it is better to check the return value of kmalloc_array() to avoid this confusion.
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kmalloc_array可能返回空指针，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 f3a398183f7b9ef78f6b71ee9f7641e046403bcb ~ 32cf90a521dcc0f136db7ee5ba32bfe5f79e460e -
Linux Linux 4.2 -

II. Public POCs for CVE-2022-49055

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III. Intelligence Information for CVE-2022-49055

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Patches & Fixes for CVE-2022-49055 (8)

Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total

CVE-2022-49149 9.8 CRITICAL rxrpc: Fix call timer start racing with call destruction
CVE-2022-49280 9.8 CRITICAL NFSD: prevent underflow in nfssvc_decode_writeargs()
CVE-2022-49093 9.8 CRITICAL skbuff: fix coalescing for page_pool fragment recycling
CVE-2022-49094 9.8 CRITICAL net/tls: fix slab-out-of-bounds bug in decrypt_internal
CVE-2022-49356 9.8 CRITICAL SUNRPC: Trap RDMA segment overflows
CVE-2022-49407 9.8 CRITICAL dlm: fix plock invalid read
CVE-2022-49418 9.8 CRITICAL NFSv4: Fix free of uninitialized nfs4_label on referral lookup.
CVE-2022-49561 9.8 CRITICAL netfilter: conntrack: re-fetch conntrack after insertion
CVE-2022-49362 9.8 CRITICAL NFSD: Fix potential use-after-free in nfsd_file_put()
CVE-2022-49194 9.8 CRITICAL net: bcmgenet: Use stronger register read/writes to assure ordering
CVE-2022-49260 9.8 CRITICAL crypto: hisilicon/sec - fix the aead software fallback for engine
CVE-2022-49201 9.8 CRITICAL ibmvnic: fix race between xmit and reset
CVE-2022-49058 9.1 CRITICAL cifs: potential buffer overflow in handling symlinks
CVE-2022-49328 8.8 HIGH mt76: fix use-after-free by removing a non-RCU wcid pointer
CVE-2022-49238 8.8 HIGH ath11k: free peer for station when disconnect from AP for QCA6390/WCN6855
CVE-2022-49471 8.8 HIGH rtw89: cfo: check mac_id to avoid out-of-bounds
CVE-2022-49159 8.8 HIGH scsi: qla2xxx: Implement ref count for SRB
CVE-2022-49500 8.8 HIGH wl1251: dynamically allocate memory used for DMA
CVE-2022-49479 8.8 HIGH mt76: fix tx status related use-after-free race on station removal
CVE-2022-49519 8.8 HIGH ath10k: skip ath10k_halt during suspend for driver state RESTARTING

Showing top 20 of 706 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49055

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