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CVE-2024-53148· NVD / CVE Program· CNA Linux

comedi: Flush partial mappings in error case

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: 0.25% (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 16c507df509113c037cdc0ba642b9ab3389bd26c, 297f14fbb81895f4ccdb0ad25d196786d6461e00, 57f048c2d205b85e34282a9b0b0ae177e84c2f44.
  • Severity is disputed: the assigning authority (CNA) scores it 7.8, NVD 5.5.

Low priority for now. Upgrade to Linux Linux 16c507df509113c037cdc0ba642b9ab3389bd26c, 297f14fbb81895f4ccdb0ad25d196786d6461e00, 57f048c2d205b85e34282a9b0b0ae177e84c2f44 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: comedi: Flush partial mappings in error case If some remap_pfn_range() calls succeeded before one failed, we still have buffer pages mapped into the userspace page tables when we drop the buffer reference with comedi_buf_map_put(bm). The userspace mappings are only cleaned up later in the mmap error path. Fix it by explicitly flushing all mappings in our VMA on the error path. See commit 79a61cc3fc04 ("mm: avoid leaving partial pfn mappings around in error case").

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
Dec 24, 2024
Updated
Aug 5, 2026
EPSS
0.2% · 15th percentile
CWE
—

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 · 0.2%

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.

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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 kernel2.6.29 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

    • 2.6.29affected
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before 57f048c2d205b85e34282a9b0b0ae177e84c2f44affected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before b9322408d83accc8b96322bc7356593206288c56affected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before 8797b7712de704dc231f9e821d8eb3b9aeb3a032affected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before 16c507df509113c037cdc0ba642b9ab3389bd26caffected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before 9b07fb464eb69a752406e78e62ab3a60bfa7b00daffected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before c6963a06ce5c61d3238751ada04ee1569663a828affected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before 297f14fbb81895f4ccdb0ad25d196786d6461e00affected · git
    • ed9eccbe8970f6eedc1b978c157caf1251a896d4 and later · before ce8f9fb651fac95dd41f69afe54d935420b945bdaffected · git
    • before 2.6.29not affected · semver

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

Same product

linux: all records

Other 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 KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • 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 haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-53145Dec 24, 2024 · um: Fix potential integer overflow during physmem setup
    22Monitor
  • ← EarlierCVE-2024-53146Dec 24, 2024 · NFSD: Prevent a potential integer overflow
    22Monitor
  • Later →CVE-2024-53149Dec 24, 2024 · usb: typec: ucsi: glink: fix off-by-one in connector_status
    18Monitor

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 Linux16c507df509113c037cdc0ba642b9ab3389bd26cVendor (CNA)
Linux Linux297f14fbb81895f4ccdb0ad25d196786d6461e00Vendor (CNA)
Linux Linux57f048c2d205b85e34282a9b0b0ae177e84c2f44Vendor (CNA)
Linux Linux8797b7712de704dc231f9e821d8eb3b9aeb3a032Vendor (CNA)
Linux Linux9b07fb464eb69a752406e78e62ab3a60bfa7b00dVendor (CNA)
Linux Linuxb9322408d83accc8b96322bc7356593206288c56Vendor (CNA)
Linux Linuxc6963a06ce5c61d3238751ada04ee1569663a828Vendor (CNA)
Linux Linuxce8f9fb651fac95dd41f69afe54d935420b945bdVendor (CNA)
debian:linux6.1.123-1 · 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.

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.

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

  1. Fix✗ → ✓

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

References

Show all references (9 more)

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

All records