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CVE-2026-31451— ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio

AI Predicted 4.3 Difficulty: Hard EPSS 0.01% · P2

Affected Version Matrix 12

VendorProductVersion RangeStatus
LinuxLinux46c7f254543dedcf134ad05091ed2b935a9a597d< 65c6c30ce6362c1c684568744ea510c921a756cdaffected
46c7f254543dedcf134ad05091ed2b935a9a597d< d4b3f370c3d8f7ce565d4a718572c9f7c12f77edaffected
46c7f254543dedcf134ad05091ed2b935a9a597d< 823849a26af089ffc5dfdd2ae4b9d446b46a0cdaaffected
46c7f254543dedcf134ad05091ed2b935a9a597d< a7d600e04732a7d29b107c91fe3aec64cf6ce7f2affected
46c7f254543dedcf134ad05091ed2b935a9a597d< 356227096eb66e41b23caf7045e6304877322edfaffected
3.8affected
< 3.8unaffected
6.6.131≤ 6.6.*unaffected
… +4 more rows
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I. Basic Information for CVE-2026-31451

Vulnerability Information
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Vulnerability Title
ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio Replace BUG_ON() with proper error handling when inline data size exceeds PAGE_SIZE. This prevents kernel panic and allows the system to continue running while properly reporting the filesystem corruption. The error is logged via ext4_error_inode(), the buffer head is released to prevent memory leak, and -EFSCORRUPTED is returned to indicate filesystem corruption.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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ext4_read_inline_folio函数未正确处理内联数据大小超过PAGE_SIZE的情况，可能导致内核恐慌。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 46c7f254543dedcf134ad05091ed2b935a9a597d ~ 65c6c30ce6362c1c684568744ea510c921a756cd -
LinuxLinux 3.8 -

II. Public POCs for CVE-2026-31451

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III. Intelligence Information for CVE-2026-31451

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Same Patch Batch · Linux · 2026-04-22 · 100 CVEs total

CVE-2026-314789.8 CRITICALksmbd: replace hardcoded hdr2_len with offsetof() in smb2_calc_max_out_buf_len()
CVE-2026-314639.8 CRITICALiomap: fix invalid folio access when i_blkbits differs from I/O granularity
CVE-2026-314449.8 CRITICALksmbd: fix use-after-free and NULL deref in smb_grant_oplock()
CVE-2026-314369.8 CRITICALdmaengine: idxd: fix possible wrong descriptor completion in llist_abort_desc()
CVE-2026-315019.8 CRITICALnet: ti: icssg-prueth: fix use-after-free of CPPI descriptor in RX path
CVE-2026-314489.4 CRITICALext4: avoid infinite loops caused by residual data
CVE-2026-314508.8 HIGHext4: publish jinode after initialization
CVE-2026-314328.8 HIGHksmbd: fix OOB write in QUERY_INFO for compound requests
CVE-2026-314338.8 HIGHksmbd: fix potencial OOB in get_file_all_info() for compound requests
CVE-2026-314358.8 HIGHnetfs: Fix read abandonment during retry
CVE-2026-314768.2 HIGHksmbd: do not expire session on binding failure
CVE-2026-314648.1 HIGHscsi: ibmvfc: Fix OOB access in ibmvfc_discover_targets_done()
CVE-2026-315138.1 HIGHBluetooth: L2CAP: Fix stack-out-of-bounds read in l2cap_ecred_conn_req
CVE-2026-314887.8 HIGHdrm/amd/display: Do not skip unrelated mode changes in DSC validation
CVE-2026-314947.8 HIGHnet: macb: use the current queue number for stats
CVE-2026-314797.8 HIGHdrm/xe: always keep track of remap prev/next
CVE-2026-315027.8 HIGHteam: fix header_ops type confusion with non-Ethernet ports
CVE-2026-314537.8 HIGHxfs: avoid dereferencing log items after push callbacks
CVE-2026-315047.8 HIGHnet: fix fanout UAF in packet_release() via NETDEV_UP race
CVE-2026-315057.8 HIGHiavf: fix out-of-bounds writes in iavf_get_ethtool_stats()

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-31451

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