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CVE-2026-64170— spi: qup: fix error pointer deref after DMA setup failure

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基金会开源的一款操作系统内核。 Linux kernel 4.1版本存在安全漏洞，该漏洞源于DMA设置失败后未清除DMA通道指针，可能导致解引用错误指针。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 612762e82ae6058d69b4ce734598491bf030afe7< 0bb3bd442f0bdad3932739a61dd6c580c9c1955e affected
612762e82ae6058d69b4ce734598491bf030afe7< d577c55d189e7ae150973058d13e299b6855633f affected
612762e82ae6058d69b4ce734598491bf030afe7< 9e673affb92c29d9ba879bf4ea81c5e840166b56 affected
612762e82ae6058d69b4ce734598491bf030afe7< 45760b72e84c1a1498f1a8a9047184c85299da20 affected
612762e82ae6058d69b4ce734598491bf030afe7< 8f9b61d255b1e989b8913b06c8ebe0aba5e1b238 affected
612762e82ae6058d69b4ce734598491bf030afe7< 4bb4764f2c51f03f657a28029eb0595d8223aab5 affected
612762e82ae6058d69b4ce734598491bf030afe7< 4f4051e9d644c371c50de4a042b85bba6727d5c3 affected
612762e82ae6058d69b4ce734598491bf030afe7< a7e8f3efd50a165ba0189f6dc57f7e51a7d149db affected
… +10 more rows
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I. Basic Information for CVE-2026-64170

Vulnerability Information
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Vulnerability Title
spi: qup: fix error pointer deref after DMA setup failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: spi: qup: fix error pointer deref after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to the clear the DMA channel pointers on setup failure to avoid dereferencing an error pointer (or attempting to release a channel a second time) on later probe errors or driver unbind. This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.
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基金会开源的一款操作系统内核。 Linux kernel 4.1版本存在安全漏洞，该漏洞源于DMA设置失败后未清除DMA通道指针，可能导致解引用错误指针。
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 612762e82ae6058d69b4ce734598491bf030afe7 ~ 0bb3bd442f0bdad3932739a61dd6c580c9c1955e -
Linux Linux 4.1 -

II. Public POCs for CVE-2026-64170

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III. Intelligence Information for CVE-2026-64170

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Patches & Fixes for CVE-2026-64170 (7)

Same Patch Batch · Linux · 2026-07-19 · 429 CVEs total

CVE-2026-63795 10.0 CRITICAL 9p: avoid putting oldfid in p9_client_walk() error path
CVE-2026-63887 9.8 CRITICAL scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf
CVE-2026-63994 9.8 CRITICAL tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]()
CVE-2026-64035 9.8 CRITICAL igc: set tx buffer type for SMD frames
CVE-2026-64142 9.8 CRITICAL ksmbd: close durable scavenger races against m_fp_list lookups
CVE-2026-63993 9.8 CRITICAL vxlan: do not reuse cached ip_hdr() value after skb_tunnel_check_pmtu()
CVE-2026-53399 9.8 CRITICAL nfsd: release layout stid on setlease failure
CVE-2026-53398 9.8 CRITICAL NFSD: Fix SECINFO_NO_NAME decode error cleanup
CVE-2026-63825 9.8 CRITICAL gcov: use atomic counter updates to fix concurrent access crashes
CVE-2026-64025 9.8 CRITICAL bpf, skmsg: fix verdict sk_data_ready racing with ktls rx
CVE-2026-64033 9.8 CRITICAL RDMA/rtrs: Fix use-after-free in path file creation cleanup
CVE-2026-63886 9.8 CRITICAL scsi: target: iscsi: Validate CHAP_R length before base64 decode
CVE-2026-64125 9.8 CRITICAL net: bcmgenet: keep RBUF EEE/PM disabled
CVE-2026-64091 9.8 CRITICAL batman-adv: tt: fix TOCTOU race for reported vlans
CVE-2026-63808 9.8 CRITICAL exfat: fix potential use-after-free in exfat_find_dir_entry()
CVE-2026-63978 9.8 CRITICAL net/handshake: Drain pending requests at net namespace exit
CVE-2026-63979 9.8 CRITICAL net/handshake: hand off the pinned file reference to accept_doit
CVE-2026-64132 9.8 CRITICAL ipv6: ioam: refresh hdr pointer before ioam6_event()
CVE-2026-64136 9.8 CRITICAL smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked()
CVE-2026-63800 9.8 CRITICAL pNFS: Fix use-after-free in pnfs_update_layout()

Showing top 20 of 429 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64170

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