Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2024-49965: ocfs2: remove unreasonable unlock in ocfs2_read_blocks

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: 0.19% (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 39a88623af3f1c686bf6db1e677ed865ffe6fccc, 3f1ca6ba5452d53c598a45d21267a2c0c221eef3, 4.10; azl3 kernel 6.6.51.1-5 on Azure Linux 3.0 6.6.57.1-2; azl3 kernel 6.6.57.1-2 on Azure Linux 3.0 6.6.57.1-2.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 39a88623af3f1c686bf6db1e677ed865ffe6fccc, 3f1ca6ba5452d53c598a45d21267a2c0c221eef3, 4.10; azl3 kernel 6.6.51.1-5 on Azure Linux 3.0 6.6.57.1-2; azl3 kernel 6.6.57.1-2 on Azure Linux 3.0 6.6.57.1-2 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: remove unreasonable unlock in ocfs2_read_blocks Patch series "Misc fixes for ocfs2_read_blocks", v5. This series contains 2 fixes for ocfs2_read_blocks(). The first patch fix the issue reported by syzbot, which detects bad unlock balance in ocfs2_read_blocks(). The second patch fixes an issue reported by Heming Zhao when reviewing above fix. This patch (of 2): There was a lock release before exiting, so remove the unreasonable unlock.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Oct 21, 2024
Updated
Aug 5, 2026
EPSS
0.1% · 9th percentile

Report tools

JSON

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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.5
CNA · Linux
7.8
2.3 point gap

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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.

Follow CVE-2024-49965

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

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 help

Affected 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.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.4.204 and later · before 4.9
  • linux linux kernel4.9.204 and later · before 4.14
  • linux linux kernel4.14.157 and later · before 4.19
  • linux linux kernel4.19.87 and later · before 4.20
  • linux linux kernel4.20 and later · before 5.10.227
  • linux linux kernel5.11 and later · before 5.15.168
  • linux linux kernel5.16 and later · before 6.1.113
  • linux linux kernel6.2 and later · before 6.6.55
  • linux linux kernel6.7 and later · before 6.10.14
  • linux linux kernel6.11 and later · before 6.11.3

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

    • 01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56, 65cbd1279f4b999d56a838344a30642db24cd215, 97e1db17bc1ef4c2e1789bc9323c7be44fba53f8, 4.20affected
    • 6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc and later · before 5245f109b4afb6595360d4c180d483a6d2009a59affected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before 9753bcb17b36c9add9b32c61766ddf8d2d161911affected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before 3f1ca6ba5452d53c598a45d21267a2c0c221eef3affected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before f55a33fe0fb5274ef185fd61947cf142138958afaffected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before 81aba693b129e82e11bb54f569504d943d018de9affected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before 84543da867c967edffd5065fa910ebf56aaae49daffected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before df4f20fc3673cee11abf2c571987a95733cb638daffected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before 39a88623af3f1c686bf6db1e677ed865ffe6fcccaffected · git
    • cf76c78595ca87548ca5e45c862ac9e0949c4687 and later · before c03a82b4a0c935774afa01fd6d128b444fd930a1affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.115-16.1.115-1
Debian:13linuxbefore 6.11.4-16.11.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • 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 KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-49963Oct 21, 2024 · mailbox: bcm2835: Fix timeout during suspend mode
    22Monitor
  • ← EarlierCVE-2024-49964Oct 21, 2024 · mm/hugetlb: fix memfd_pin_folios free_huge_pages leak
    22Monitor
  • Later →CVE-2024-49966Oct 21, 2024 · ocfs2: cancel dqi_sync_work before freeing oinfo
    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 / packageFixed versionSource
Linux Linux39a88623af3f1c686bf6db1e677ed865ffe6fcccVendor (CNA)
Linux Linux3f1ca6ba5452d53c598a45d21267a2c0c221eef3Vendor (CNA)
Linux Linux4.10Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.19.323Vendor (CNA)
Linux Linux4.5Vendor (CNA)
Linux Linux5245f109b4afb6595360d4c180d483a6d2009a59Vendor (CNA)
Linux Linux81aba693b129e82e11bb54f569504d943d018de9Vendor (CNA)
Linux Linux84543da867c967edffd5065fa910ebf56aaae49dVendor (CNA)
Linux Linux9753bcb17b36c9add9b32c61766ddf8d2d161911Vendor (CNA)
Linux Linuxc03a82b4a0c935774afa01fd6d128b444fd930a1Vendor (CNA)
Linux Linuxdf4f20fc3673cee11abf2c571987a95733cb638dVendor (CNA)
Linux Linuxf55a33fe0fb5274ef185fd61947cf142138958afVendor (CNA)
azl3 kernel 6.6.51.1-5 on Azure Linux 3.06.6.57.1-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
azl3 kernel 6.6.57.1-2 on Azure Linux 3.06.6.57.1-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.167.1-2 on CBL-Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-1 on CBL Mariner 2.05.15.173.1-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.115-1 · Debian:12Package 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.

No history yet (it accumulates with the daily EPSS job).

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 researchers

Finders, 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)

CWE-667 · Improper Locking

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.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records