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CVE-2026-46080— ocfs2: split transactions in dio completion to avoid credit exhaustion

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ocfs2中直接I/O完成时事务拆分不当可能导致信用耗尽。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.14% · P3

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c15471f79506830f80eca0e7fe09b8213953ab5f< 97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8 affected
c15471f79506830f80eca0e7fe09b8213953ab5f< 1e99bb19994246514d63e656492904176f9d5edd affected
c15471f79506830f80eca0e7fe09b8213953ab5f< 91e05ac2336d00d5b99fc774be4bd50039084796 affected
c15471f79506830f80eca0e7fe09b8213953ab5f< 886f97fa59d0bbfa9859fb1a66dd9e014b522d89 affected
c15471f79506830f80eca0e7fe09b8213953ab5f< ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e affected
c15471f79506830f80eca0e7fe09b8213953ab5f< 3c636a3edca9c3f180b3079f94fe7e115730d9c6 affected
c15471f79506830f80eca0e7fe09b8213953ab5f< 069c3fb310e9336cf48cfdf8748a32c29fd0193d affected
c15471f79506830f80eca0e7fe09b8213953ab5f< d647c5b2fbf81560818dacade360abc8c00a9665 affected
… +10 more rows
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I. Basic Information for CVE-2026-46080

Vulnerability Information
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Vulnerability Title
ocfs2: split transactions in dio completion to avoid credit exhaustion
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ocfs2: split transactions in dio completion to avoid credit exhaustion During ocfs2 dio operations, JBD2 may report warnings via following call trace: ocfs2_dio_end_io_write ocfs2_mark_extent_written ocfs2_change_extent_flag ocfs2_split_extent ocfs2_try_to_merge_extent ocfs2_extend_rotate_transaction ocfs2_extend_trans jbd2__journal_restart start_this_handle output: JBD2: kworker/6:2 wants too many credits credits:5450 rsv_credits:0 max:5449 To prevent exceeding the credits limit, modify ocfs2_dio_end_io_write() to handle extents in a batch of transaction. Additionally, relocate ocfs2_del_inode_from_orphan(). The orphan inode should only be removed from the orphan list after the extent tree update is complete. This ensures that if a crash occurs in the middle of extent tree updates, we won't leave stale blocks beyond EOF. This patch also changes the logic for updating the inode size and removing orphan, making it similar to ext4_dio_write_end_io(). Both operations are performed only when everything looks good. Finally, thanks to Jans and Joseph for providing the bug fix prototype and suggestions.
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ocfs2中直接I/O完成时事务拆分不当可能导致信用耗尽。
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 c15471f79506830f80eca0e7fe09b8213953ab5f ~ 97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8 -
Linux Linux 4.6 -

II. Public POCs for CVE-2026-46080

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III. Intelligence Information for CVE-2026-46080

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Patches & Fixes for CVE-2026-46080 (7)

Other References for CVE-2026-46080 (1)

Same Patch Batch · Linux · 2026-05-27 · 275 CVEs total

CVE-2026-45988 9.8 CRITICAL rxrpc: Fix re-decryption of RESPONSE packets
CVE-2026-45898 9.8 CRITICAL RDMA/iwcm: Fix workqueue list corruption by removing work_list
CVE-2026-46039 9.8 CRITICAL rxgk: Fix potential integer overflow in length check
CVE-2026-45972 9.8 CRITICAL smb: client: fix potential UAF and double free in smb2_open_file()
CVE-2026-46043 9.1 CRITICAL RDMA/rxe: Validate pad and ICRC before payload_size() in rxe_rcv
CVE-2026-46056 8.8 HIGH Bluetooth: hci_event: fix potential UAF in SSP passkey handlers
CVE-2026-45945 8.8 HIGH iommu/vt-d: Fix race condition during PASID entry replacement
CVE-2026-45843 8.2 HIGH slip: bound decode() reads against the compressed packet length
CVE-2026-46037 8.2 HIGH ipv4: icmp: validate reply type before using icmp_pointers
CVE-2025-71311 8.2 HIGH fs/ntfs3: Initialize new folios before use
CVE-2026-46010 8.1 HIGH rxrpc: Fix error handling in rxgk_extract_token()
CVE-2026-46099 8.1 HIGH net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels
CVE-2026-46076 7.9 HIGH KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-45931 7.8 HIGH accel/amdxdna: Hold mm structure across iommu_sva_unbind_device()
CVE-2026-45935 7.8 HIGH fs/ntfs3: Fix slab-out-of-bounds read in DeleteIndexEntryRoot
CVE-2026-45909 7.8 HIGH clk: mediatek: Drop __initconst from gates
CVE-2026-46065 7.8 HIGH fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info
CVE-2026-46058 7.8 HIGH media: amphion: Fix race between m2m job_abort and device_run
CVE-2026-46015 7.8 HIGH tcp: call sk_data_ready() after listener migration
CVE-2026-45959 7.8 HIGH crypto: ccp - Fix a crash due to incorrect cleanup usage of kfree

Showing top 20 of 275 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46080

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