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NVD / CVE Program· CNA Linux

CVE-2024-53155: ocfs2: fix uninitialized value in ocfs2_file_read_iter()

Noroxi assessment

Priority: Monitor (action score 28/100)

  • 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: 0.23% (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 366c933c2ab34dd6551acc03b4872726b7605143, 66b7ddd1804e2c4216dd7ead8eeb746cdbb3b62f, 6c8f8d1e595dabd5389817f6d798cc8bd95c40ab; cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.0 5.15.176.3-1; cbl2 kernel 5.15.173.1-2 on CBL-Mariner 2.0 5.15.176.3-1.

Low priority for now. Upgrade to Linux Linux 366c933c2ab34dd6551acc03b4872726b7605143, 66b7ddd1804e2c4216dd7ead8eeb746cdbb3b62f, 6c8f8d1e595dabd5389817f6d798cc8bd95c40ab; cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.0 5.15.176.3-1; cbl2 kernel 5.15.173.1-2 on CBL-Mariner 2.0 5.15.176.3-1 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: fix uninitialized value in ocfs2_file_read_iter() Syzbot has reported the following KMSAN splat: BUG: KMSAN: uninit-value in ocfs2_file_read_iter+0x9a4/0xf80 ocfs2_file_read_iter+0x9a4/0xf80 __io_read+0x8d4/0x20f0 io_read+0x3e/0xf0 io_issue_sqe+0x42b/0x22c0 io_wq_submit_work+0xaf9/0xdc0 io_worker_handle_work+0xd13/0x2110 io_wq_worker+0x447/0x1410 ret_from_fork+0x6f/0x90 ret_from_fork_asm+0x1a/0x30 Uninit was created at: __alloc_pages_noprof+0x9a7/0xe00 alloc_pages_mpol_noprof+0x299/0x990 alloc_pages_noprof+0x1bf/0x1e0 allocate_slab+0x33a/0x1250 ___slab_alloc+0x12ef/0x35e0 kmem_cache_alloc_bulk_noprof+0x486/0x1330 __io_alloc_req_refill+0x84/0x560 io_submit_sqes+0x172f/0x2f30 __se_sys_io_uring_enter+0x406/0x41c0 __x64_sys_io_uring_enter+0x11f/0x1a0 x64_sys_call+0x2b54/0x3ba0 do_syscall_64+0xcd/0x1e0 entry_SYSCALL_64_after_hwframe+0x77/0x7f Since an instance of 'struct kiocb' may be passed from the block layer with 'private' field uninitialized, introduce 'ocfs2_iocb_init_rw_locked()' and use it from where 'ocfs2_dio_end_io()' might take care, i.e. in 'ocfs2_file_read_iter()' and 'ocfs2_file_write_iter()'.

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Dec 24, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 14th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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-2024-53155

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

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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.

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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 kernel2.6.22 and later · before 4.19.325
  • linux linux kernel4.20 and later · before 5.4.287
  • linux linux kernel5.5 and later · before 5.10.231
  • linux linux kernel5.11 and later · before 5.15.174
  • linux linux kernel5.16 and later · before 6.1.120
  • linux linux kernel6.2 and later · before 6.6.64
  • linux linux kernel6.7 and later · before 6.11.11
  • linux linux kernel6.12 and later · before 6.12.2

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

    • 2.6.22affected
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before 6c8f8d1e595dabd5389817f6d798cc8bd95c40abaffected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before f4078ef38d3163e6be47403a619558b19c4bfccdaffected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before 66b7ddd1804e2c4216dd7ead8eeb746cdbb3b62faffected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before 8c966150d5abff58c3c2bdb9a6e63fd773782905affected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before 83f8713a0ef1d55d6a287bcfadcaab8245ac5098affected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before 8e0de82ed18ba0e71f817adbd81317fd1032ca5aaffected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before 366c933c2ab34dd6551acc03b4872726b7605143affected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before dc78efe556fed162d48736ef24066f42e463e27caffected · git
    • 7cdfc3a1c3971c9125c317cb8c2525745851798e and later · before adc77b19f62d7e80f98400b2fca9d700d2afdd6faffected · git

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.123-16.1.123-1
Debian:13linuxbefore 6.12.3-16.12.3-1
SUSE:Linux Enterprise Live Patching 12 SP5kernel-defaultbefore 4.12.14-122.247.14.12.14-122.247.1
SUSE:Linux Enterprise Live Patching 12 SP5kgraft-patch-SLE12-SP5_Update_65before 1-8.3.11-8.3.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-sourcebefore 4.12.14-122.247.14.12.14-122.247.1
SUSE:Linux Enterprise Server 12 SP5-LTSSkernel-symsbefore 4.12.14-122.247.14.12.14-122.247.1

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-2024-53153Dec 24, 2024 · PCI: qcom-ep: Move controller cleanups to qcom_pcie_perst_deassert()
    22Monitor
  • ← EarlierCVE-2024-53154Dec 24, 2024 · clk: clk-apple-nco: Add NULL check in applnco_probe
    22Monitor
  • Later →CVE-2024-53156Dec 24, 2024 · wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service()
    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 Linux366c933c2ab34dd6551acc03b4872726b7605143Vendor (CNA)
Linux Linux66b7ddd1804e2c4216dd7ead8eeb746cdbb3b62fVendor (CNA)
Linux Linux6c8f8d1e595dabd5389817f6d798cc8bd95c40abVendor (CNA)
Linux Linux83f8713a0ef1d55d6a287bcfadcaab8245ac5098Vendor (CNA)
Linux Linux8c966150d5abff58c3c2bdb9a6e63fd773782905Vendor (CNA)
Linux Linux8e0de82ed18ba0e71f817adbd81317fd1032ca5aVendor (CNA)
Linux Linuxadc77b19f62d7e80f98400b2fca9d700d2afdd6fVendor (CNA)
Linux Linuxdc78efe556fed162d48736ef24066f42e463e27cVendor (CNA)
Linux Linuxf4078ef38d3163e6be47403a619558b19c4bfccdVendor (CNA)
cbl2 kernel 5.15.173.1-2 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.173.1-2 on CBL-Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 kernel 5.15.176.3-1 on CBL Mariner 2.05.15.176.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.123-1 · Debian:12Package registry (OSV)
suse:kernel-default4.12.14-122.247.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package registry (OSV)
suse:kernel-source4.12.14-122.247.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kernel-syms4.12.14-122.247.1 · SUSE:Linux Enterprise Server 12 SP5-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP5_Update_651-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5Package 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.

EPSS, last 120 days

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 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.

  • CVE-2024-5030235 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2024-4768564 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2026-43139498 days apartxfrm6: fix uninitialized saddr in xfrm6_get_saddr()
    34Monitor
  • CVE-2026-43291500 days apartnet: nfc: nci: Fix parameter validation for packet data
    33Monitor
  • CVE-2024-5014347 days apartudf: fix uninit-value use in udf_get_fileshortad
    31Monitor
  • CVE-2024-36898208 days apartgpiolib: cdev: fix uninitialised kfifo
    31Monitor

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
high · data can be read
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
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

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

  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