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CVE-2026-43132— dm-verity: correctly handle dm_bufio_client_create() 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dm-verity中未正确处理dm_bufio_client_create失败，可能导致崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a739ff3f543afbb4a041c16cd0182c8e8d366e70< 6283e49af87a9c121bb01e5a64a7fe5706c210bc affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< d3e1f1adc8a0289efe2d2cdc90edb8c6ffe0b5ef affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< 5c2217ddb3b7e7ac25f4ebe9061258fc8f1c9167 affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< 031f2adc1499b112a39ac316bbab3c80bba16cf2 affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< 9b8dc1d327e2928f3da59ced0595d850d31c0936 affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< 451cc650e40e8c3222d37877a9e4be0fcaacb9c8 affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< b154a868a3856fb5216c4f82981d8a503832e095 affected
a739ff3f543afbb4a041c16cd0182c8e8d366e70< 119f4f04186fa4f33ee6bd39af145cdaff1ff17f affected
… +10 more rows
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I. Basic Information for CVE-2026-43132

Vulnerability Information
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Vulnerability Title
dm-verity: correctly handle dm_bufio_client_create() failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: dm-verity: correctly handle dm_bufio_client_create() failure If either of the calls to dm_bufio_client_create() in verity_fec_ctr() fails, then dm_bufio_client_destroy() is later called with an ERR_PTR() argument. That causes a crash. Fix this.
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dm-verity中未正确处理dm_bufio_client_create失败，可能导致崩溃。
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 a739ff3f543afbb4a041c16cd0182c8e8d366e70 ~ 6283e49af87a9c121bb01e5a64a7fe5706c210bc -
Linux Linux 4.5 -

II. Public POCs for CVE-2026-43132

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III. Intelligence Information for CVE-2026-43132

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Patches & Fixes for CVE-2026-43132 (8)

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

CVE-2026-43208 9.8 CRITICAL net: do not pass flow_id to set_rps_cpu()
CVE-2026-43125 9.8 CRITICAL dlm: validate length in dlm_search_rsb_tree
CVE-2026-43198 9.8 CRITICAL tcp: fix potential race in tcp_v6_syn_recv_sock()
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-2026-43114 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-2026-43197 9.1 CRITICAL netconsole: avoid OOB reads, msg is not nul-terminated
CVE-2026-43083 9.1 CRITICAL net: ioam6: fix OOB and missing lock
CVE-2026-43158 8.8 HIGH xfs: fix freemap adjustments when adding xattrs to leaf blocks
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-2026-43249 8.8 HIGH 9p/xen: protect xen_9pfs_front_free against concurrent calls
CVE-2026-43239 8.8 HIGH smb: client: prevent races in ->query_interfaces()
CVE-2026-43232 8.8 HIGH net: wan: farsync: Fix use-after-free bugs caused by unfinished tasklets
CVE-2026-43283 8.8 HIGH net: ethernet: ec_bhf: Fix dma_free_coherent() dma handle
CVE-2026-43172 8.8 HIGH wifi: iwlwifi: fix 22000 series SMEM parsing
CVE-2026-43176 8.8 HIGH wifi: rtw89: pci: validate release report content before using for RTL8922DE
CVE-2026-43215 8.8 HIGH cifs: Fix locking usage for tcon fields

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-2026-43132

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