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CVE Record

CVE-2023-53349: media: ov2740: Fix memleak in ov2740_init_controls()

In the Linux kernel, the following vulnerability has been resolved: media: ov2740: Fix memleak in ov2740_init_controls() There is a kmemleak when testing the media/i2c/ov2740.c with bpf mock device: unreferenced object 0xffff8881090e19e0 (size 16): comm "51-i2c-ov2740", pid 278, jiffies 4294781584 (age 23.613s) hex dump (first 16 bytes): 00 f3 7c 0b 81 88 ff ff 80 75 6a 09 81 88 ff ff ..|......uj..... backtrace: [<000000004e9fad8f>] __kmalloc_node+0x44/0x1b0 [<0000000039c802f4>] kvmalloc_node+0x34/0x180 [<000000009b8b5c63>] v4l2_ctrl_handler_init_class+0x11d/0x180 [videodev] [<0000000038644056>] ov2740_probe+0x37d/0x84f [ov2740] [<0000000092489f59>] i2c_device_probe+0x28d/0x680 [<000000001038babe>] really_probe+0x17c/0x3f0 [<0000000098c7af1c>] __driver_probe_device+0xe3/0x170 [<00000000e1b3dc24>] device_driver_attach+0x34/0x80 [<000000005a04a34d>] bind_store+0x10b/0x1a0 [<00000000ce25d4f2>] drv_attr_store+0x49/0x70 [<000000007d9f4e9a>] sysfs_kf_write+0x8c/0xb0 [<00000000be6cff0f>] kernfs_fop_write_iter+0x216/0x2e0 [<0000000031ddb40a>] vfs_write+0x658/0x810 [<0000000041beecdd>] ksys_write+0xd6/0x1b0 [<0000000023755840>] do_syscall_64+0x38/0x90 [<00000000b2cc2da2>] entry_SYSCALL_64_after_hwframe+0x63/0xcd ov2740_init_controls() won't clean all the allocated resources in fail path, which may causes the memleaks. Add v4l2_ctrl_handler_free() to prevent memleak.

MediumCVSS 5.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2023-53349 is a Linux kernel memory leak in the OV2740 camera sensor driver. A local user could trigger resource leakage in affected systems, potentially degrading availability. It does not indicate data theft or privilege escalation in the provided sources.

Executive priority

Treat this as a normal kernel maintenance issue unless OV2740 camera hardware or custom kernels are common in the fleet. It is availability-focused, local-access only, and not reported as actively exploited in the provided sources.

Technical view

The flaw is a CWE-401 memory leak in media/i2c/ov2740.c. ov2740_init_controls() failed to clean all allocated resources on an error path. The kernel fix adds v4l2_ctrl_handler_free() to release the V4L2 control handler resources.

Likely exposure

Exposure is most likely on Linux systems with affected kernel versions where the OV2740 media I2C camera driver is present and reachable. The CVSS vector requires local access and low privileges, with availability impact only.

Exploitation context

The source bundle does not show CISA KEV listing or active exploitation. The provided evidence describes a kmemleak found during testing with a BPF mock device, not a public in-the-wild attack.

Researcher notes

Evidence points to an error-path cleanup bug in ov2740_init_controls(). The public record lists CVSS 5.5, AV:L/PR:L/UI:N, and CWE-401. The affected-version data is sparse, so validate against distro backports and exact stable commits.

Mitigation direction

  • Update to a vendor kernel containing the referenced upstream stable fixes.
  • Prioritize affected endpoints or embedded devices using OV2740 camera hardware.
  • Check Linux distribution advisories for backported fixed kernel packages.
  • Avoid direct wrangler-style assumptions: follow vendor kernel guidance for operational workarounds.

Validation and detection

  • Inventory Linux kernel versions against the affected version data in the CVE record.
  • Confirm whether the ov2740 driver is built, packaged, loaded, or required.
  • Review kernel package changelogs for the referenced stable commit IDs.
  • For research systems, use memory-leak diagnostics to confirm the failure path is fixed.
Prepared
Confidence
high
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-401: Exact CWE lookup

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cve · low confidence lookup

CVE-2023-53349 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.5 (3.1)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
3Timeline events
1ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2023-53349Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux866edc895171f1256aad3e81dce193447955c202, 866edc895171f1256aad3e81dce193447955c202, 866edc895171f1256aad3e81dce193447955c202, 866edc895171f1256aad3e81dce193447955c202, 866edc895171f1256aad3e81dce193447955c202unaffected
LinuxLinux5.8, 0, 5.10.173, 5.15.99, 6.1.16, 6.2.3, 6.3affected
Weakness

CWE details

CWE-401

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-401 · source CWE mapping

Missing Release of Memory after Effective Lifetime

Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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