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NVD / CVE Program· CNA Linux

CVE-2023-52687: crypto: safexcel - Add error handling for dma_map_sg() calls

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: 0.60% (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 4c0ac81a172a69a7733290915276672787e904ec, 8084b788c2fb1260f7d44c032d5124680b20d2b2, 87e02063d07708cac5bfe9fd3a6a242898758ac8.
  • Severity is disputed: the assigning authority (CNA) scores it 9.8, NVD 5.5.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 4c0ac81a172a69a7733290915276672787e904ec, 8084b788c2fb1260f7d44c032d5124680b20d2b2, 87e02063d07708cac5bfe9fd3a6a242898758ac8 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: crypto: safexcel - Add error handling for dma_map_sg() calls Macro dma_map_sg() may return 0 on error. This patch enables checks in case of the macro failure and ensures unmapping of previously mapped buffers with dma_unmap_sg(). Found by Linux Verification Center (linuxtesting.org) with static analysis tool SVACE.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 17, 2024
Updated
Aug 5, 2026
EPSS
0.6% · 48th 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 · 0.6%

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
9.8
4.3 point gap

CVSS:3.1/AV:N/AC:L/PR:N/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-2023-52687

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 kernel6.1 and later · before 6.1.75
  • linux linux kernel6.2 and later · before 6.6.14
  • linux linux kernel6.7 and later · before 6.7.2

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

    • 6.1affected
    • 49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1 and later · before 4c0ac81a172a69a7733290915276672787e904ecaffected · git
    • 49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1 and later · before 8084b788c2fb1260f7d44c032d5124680b20d2b2affected · git
    • 49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1 and later · before fc0b785802b856566df3ac943e38a072557001c4affected · git
    • 49186a7d9e46ff132a0ed9b721ad6b6a58dba6c1 and later · before 87e02063d07708cac5bfe9fd3a6a242898758ac8affected · git
    • before 6.1not affected · semver
    • 6.1.75 and later · up to and including 6.1.*not affected · semver
    • 6.6.14 and later · up to and including 6.6.*not affected · semver
    • 6.7.2 and later · up to and including 6.7.*not affected · semver
    • 6.8 and laternot affected · original_commit_for_fix

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.76-16.1.76-1
Debian:13linuxbefore 6.6.15-16.6.15-1

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-2023-52684May 17, 2024 · firmware: qcom: qseecom: fix memory leaks in error paths
    22Monitor
  • ← EarlierCVE-2023-52686May 17, 2024 · powerpc/powernv: Add a null pointer check in opal_event_init()
    22Monitor
  • Later →CVE-2023-52688May 17, 2024 · wifi: ath12k: fix the error handler of rfkill config
    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 Linux4c0ac81a172a69a7733290915276672787e904ecVendor (CNA)
Linux Linux8084b788c2fb1260f7d44c032d5124680b20d2b2Vendor (CNA)
Linux Linux87e02063d07708cac5bfe9fd3a6a242898758ac8Vendor (CNA)
Linux Linuxfc0b785802b856566df3ac943e38a072557001c4Vendor (CNA)
debian:linux6.1.76-1 · 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.

  • CVE-2024-3949254 days apartmailbox: mtk-cmdq: Fix pm_runtime_get_sync() warning in mbox shutdown
    28Monitor
  • CVE-2023-526800 days apartALSA: scarlett2: Add missing error checks to *_ctl_get()
    22Monitor
  • CVE-2023-526920 days apartALSA: scarlett2: Add missing error check to scarlett2_usb_set_config()
    22Monitor
  • CVE-2021-473604 days apartbinder: make sure fd closes complete
    22Monitor
  • CVE-2023-527974 days apartdrivers: perf: Check find_first_bit() return value
    22Monitor
  • CVE-2024-4206873 days apartbpf: Take return from set_memory_ro() into account with bpf_prog_lock_ro()
    22Monitor

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

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-252 · Unchecked Return Value

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

  1. Fix✗ → ✓

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

References

Show all references (3 more)

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

All records