ocfs2: split transactions in dio completion to avoid credit exhaustion
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.16% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 069c3fb310e9336cf48cfdf8748a32c29fd0193d, 1e99bb19994246514d63e656492904176f9d5edd, 3c636a3edca9c3f180b3079f94fe7e115730d9c6; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1.
Low priority for now. Upgrade to Linux Linux 069c3fb310e9336cf48cfdf8748a32c29fd0193d, 1e99bb19994246514d63e656492904176f9d5edd, 3c636a3edca9c3f180b3079f94fe7e115730d9c6; azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 6.6.141.1-1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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.
- Published
- May 27, 2026
- Updated
- Jun 24, 2026
- EPSS
- 0.1% · 5th percentile
- CWE
- —
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel4.6 and later · before 5.10.258
- linux linux kernel5.11 and later · before 5.15.209
- linux linux kernel5.16 and later · before 6.1.175
- linux linux kernel6.2 and later · before 6.6.140
- linux linux kernel6.7 and later · before 6.12.86
- linux linux kernel6.13 and later · before 6.18.27
- linux linux kernel6.19 and later · before 7.0.4
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 4.6affected
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before 97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8affected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before 1e99bb19994246514d63e656492904176f9d5eddaffected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before 91e05ac2336d00d5b99fc774be4bd50039084796affected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before 886f97fa59d0bbfa9859fb1a66dd9e014b522d89affected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before ea5bb1d20da756e4f41a48dad42b2e7d6e73f71eaffected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before 3c636a3edca9c3f180b3079f94fe7e115730d9c6affected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before 069c3fb310e9336cf48cfdf8748a32c29fd0193daffected · git
- c15471f79506830f80eca0e7fe09b8213953ab5f and later · before d647c5b2fbf81560818dacade360abc8c00a9665affected · git
- before 4.6not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.176-1 | 6.1.176-1 |
| Debian:13 | linux | before 6.12.86-1 | 6.12.86-1 |
| Debian:14 | linux | before 7.0.4-1 | 7.0.4-1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-64kb | before 5.14.21-150400.24.235.1 | 5.14.21-150400.24.235.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-docs | before 5.14.21-150400.24.235.1 | 5.14.21-150400.24.235.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-obs-build | before 5.14.21-150400.24.235.1 | 5.14.21-150400.24.235.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | kernel-syms | before 5.14.21-150400.24.235.1 | 5.14.21-150400.24.235.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-64kb | before 5.14.21-150500.55.182.1 | 5.14.21-150500.55.182.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-docs | before 5.14.21-150500.55.182.1 | 5.14.21-150500.55.182.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-obs-build | before 5.14.21-150500.55.182.1 | 5.14.21-150500.55.182.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | kernel-syms | before 5.14.21-150500.55.182.1 | 5.14.21-150500.55.182.1 |
| SUSE:Linux Enterprise Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_58 | before 1-150400.9.7.1 | 1-150400.9.7.1 |
| SUSE:Linux Enterprise Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_44 | before 1-150500.11.5.1 | 1-150500.11.5.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-default | before 6.4.0-150600.23.130.1 | 6.4.0-150600.23.130.1 |
| SUSE:Linux Enterprise Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_30 | before 1-150600.13.5.1 | 1-150600.13.5.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default | before 5.14.21-150400.24.235.1 | 5.14.21-150400.24.235.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-default-base | before 5.14.21-150400.24.235.1.150400.24.118.3 | 5.14.21-150400.24.235.1.150400.24.118.3 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-rt | before 5.14.21-150400.15.181.1 | 5.14.21-150400.15.181.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-source | before 5.14.21-150400.24.235.1 | 5.14.21-150400.24.235.1 |
| SUSE:Linux Enterprise Micro 5.3 | kernel-source-rt | before 5.14.21-150400.15.181.1 | 5.14.21-150400.15.181.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default | before 5.14.21-150500.55.182.1 | 5.14.21-150500.55.182.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-default-base | before 5.14.21-150500.55.182.1.150500.6.85.2 | 5.14.21-150500.55.182.1.150500.6.85.2 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-rt | before 5.14.21-150500.13.156.1 | 5.14.21-150500.13.156.1 |
| SUSE:Linux Enterprise Micro 5.5 | kernel-source | before 5.14.21-150500.55.182.1 | 5.14.21-150500.55.182.1 |
+10
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
Published before and after this one in the same product
- ← EarlierCVE-2026-46077May 27, 2026 · crypto: atmel-tdes - fix DMA sync direction22Monitor
- ← EarlierCVE-2026-46079May 27, 2026 · rbd: fix null-ptr-deref when device_add_disk() fails22Monitor
- Later →CVE-2026-46081May 27, 2026 · crypto: acomp - fix wrong pointer stored by acomp_save_req()31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 069c3fb310e9336cf48cfdf8748a32c29fd0193d | Vendor (CNA) |
| Linux Linux | 1e99bb19994246514d63e656492904176f9d5edd | Vendor (CNA) |
| Linux Linux | 3c636a3edca9c3f180b3079f94fe7e115730d9c6 | Vendor (CNA) |
| Linux Linux | 886f97fa59d0bbfa9859fb1a66dd9e014b522d89 | Vendor (CNA) |
| Linux Linux | 91e05ac2336d00d5b99fc774be4bd50039084796 | Vendor (CNA) |
| Linux Linux | 97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8 | Vendor (CNA) |
| Linux Linux | d647c5b2fbf81560818dacade360abc8c00a9665 | Vendor (CNA) |
| Linux Linux | ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e | Vendor (CNA) |
| azl3 kernel 6.6.139.1-1 on Azure Linux 3.0 | 6.6.141.1-1 · CBL-Mariner Releases | Microsoft (MSRC) |
| debian:linux | 6.1.176-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-64kb | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | Package registry (OSV) |
| suse:kernel-default | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
| suse:kernel-default-base | 5.14.21-150400.24.235.1.150400.24.118.3 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
| suse:kernel-docs | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP4_Update_58 | 1-150400.9.7.1 · SUSE:Linux Enterprise Live Patching 15 SP4 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP5_Update_44 | 1-150500.11.5.1 · SUSE:Linux Enterprise Live Patching 15 SP5 | Package registry (OSV) |
| suse:kernel-livepatch-SLE15-SP6_Update_30 | 1-150600.13.5.1 · SUSE:Linux Enterprise Live Patching 15 SP6 | Package registry (OSV) |
| suse:kernel-obs-build | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | Package registry (OSV) |
| suse:kernel-rt | 5.14.21-150400.15.181.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
| suse:kernel-source | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise Micro 5.3 | Package registry (OSV) |
| suse:kernel-syms | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | Package registry (OSV) |
| suse:kernel-zfcpdump | 5.14.21-150400.24.235.1 · SUSE:Linux Enterprise Server 15 SP4-LTSS | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/1e99bb19994246514d63e656492904176f9d5edd
- git.kernel.org/stable/c/3c636a3edca9c3f180b3079f94fe7e115730d9c6
- git.kernel.org/stable/c/886f97fa59d0bbfa9859fb1a66dd9e014b522d89
- git.kernel.org/stable/c/91e05ac2336d00d5b99fc774be4bd50039084796
- git.kernel.org/stable/c/97c03c0e9f73a5049794b3c69ee60fb5e8b0ebd8
- git.kernel.org/stable/c/d647c5b2fbf81560818dacade360abc8c00a9665
- git.kernel.org/stable/c/ea5bb1d20da756e4f41a48dad42b2e7d6e73f71e
Vendor advisories and official records. Exploit/PoC links are deliberately left out.