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CVE-2026-43283— net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle

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，该漏洞源于错误路径中dma_free_coherent使用了错误的dma句柄，可能导致缓冲区取消映射不当。

CVSS 8.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1564 · Hide Artifacts

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 6af55ff52b02d492d45db88df3e461fa51a6f753< 0f589ee54fd6d76d3f75e745f7f12c64cbd749e5 affected
6af55ff52b02d492d45db88df3e461fa51a6f753< accd0599bc8e73b962247c6c6c70ca7aa1f8e8d0 affected
6af55ff52b02d492d45db88df3e461fa51a6f753< 8320727be7ff704e07c87624efc2a4a75f54b3ce affected
6af55ff52b02d492d45db88df3e461fa51a6f753< 1e300c33ef3cc544c2b9c693778fe9490cfe9184 affected
6af55ff52b02d492d45db88df3e461fa51a6f753< 1b1371cd4032ae859838ebc74215f569987bb197 affected
6af55ff52b02d492d45db88df3e461fa51a6f753< 1b1d3c5d58a80a19d017a409aa2308162bab5bbf affected
6af55ff52b02d492d45db88df3e461fa51a6f753< 7e54ff938bebb173822b4c38b33fc164c1cabf92 affected
6af55ff52b02d492d45db88df3e461fa51a6f753< ffe68c3766997d82e9ccaf1cdbd47eba269c4aa2 affected
… +10 more rows
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I. Basic Information for CVE-2026-43283

Vulnerability Information
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Vulnerability Title
net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle dma_free_coherent() in error path takes priv->rx_buf.alloc_len as the dma handle. This would lead to improper unmapping of the buffer. Change the dma handle to priv->rx_buf.alloc_phys.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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，该漏洞源于错误路径中dma_free_coherent使用了错误的dma句柄，可能导致缓冲区取消映射不当。
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 6af55ff52b02d492d45db88df3e461fa51a6f753 ~ 0f589ee54fd6d76d3f75e745f7f12c64cbd749e5 -
Linux Linux 3.15 -

II. Public POCs for CVE-2026-43283

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III. Intelligence Information for CVE-2026-43283

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Patches & Fixes for CVE-2026-43283 (8)

Same Patch Batch · Linux · 2026-05-06 · 224 CVEs total

CVE-2026-43186 9.8 CRITICAL ipv6: ioam: fix heap buffer overflow in __ioam6_fill_trace_data()
CVE-2026-43185 9.8 CRITICAL ksmbd: fix signededness bug in smb_direct_prepare_negotiation()
CVE-2026-43125 9.8 CRITICAL dlm: validate length in dlm_search_rsb_tree
CVE-2026-43208 9.8 CRITICAL net: do not pass flow_id to set_rps_cpu()
CVE-2026-43198 9.8 CRITICAL tcp: fix potential race in tcp_v6_syn_recv_sock()
CVE-2026-43114 9.4 CRITICAL netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry
CVE-2026-43117 9.1 CRITICAL btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file()
CVE-2026-43083 9.1 CRITICAL net: ioam6: fix OOB and missing lock
CVE-2026-43197 9.1 CRITICAL netconsole: avoid OOB reads, msg is not nul-terminated
CVE-2026-43232 8.8 HIGH net: wan: farsync: Fix use-after-free bugs caused by unfinished tasklets
CVE-2026-43187 8.8 HIGH xfs: delete attr leaf freemap entries when empty
CVE-2026-43112 8.8 HIGH fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath
CVE-2026-43113 8.8 HIGH wifi: wl1251: validate packet IDs before indexing tx_frames
CVE-2026-43110 8.8 HIGH wifi: brcmfmac: validate bsscfg indices in IF events
CVE-2026-43215 8.8 HIGH cifs: Fix locking usage for tcon fields
CVE-2026-43176 8.8 HIGH wifi: rtw89: pci: validate release report content before using for RTL8922DE
CVE-2026-43239 8.8 HIGH smb: client: prevent races in ->query_interfaces()
CVE-2026-43158 8.8 HIGH xfs: fix freemap adjustments when adding xattrs to leaf blocks
CVE-2026-43249 8.8 HIGH 9p/xen: protect xen_9pfs_front_free against concurrent calls
CVE-2026-43172 8.8 HIGH wifi: iwlwifi: fix 22000 series SMEM parsing

Showing top 20 of 224 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-43283

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