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CVE.org (no NVD analysis yet)· CNA Linux

CVE-2026-98298: dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • 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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47, 2148db529f082d6e3ca95413bf943442f4ef30cc, 4a33886057e6d127555efb022879c583e966acc5; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.

Low priority for now. Upgrade to Linux Linux 075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47, 2148db529f082d6e3ca95413bf943442f4ef30cc, 4a33886057e6d127555efb022879c583e966acc5; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg() In mmp_pdma_prep_slave_sg(), for_each_sg() iterates the scatterlist putting each entry into 'sg', but the entry length is read from 'sgl' (the list head) instead of 'sg' (the current entry): for_each_sg(sgl, sg, sg_len, i) { addr = sg_dma_address(sg); avail = sg_dma_len(sgl); /* should be 'sg' */ Consequently 'avail' is always the length of the first entry. For multi-sg lists this causes out-of-bounds reads when a later entry is shorter than the first, and silent data loss when it is longer. Single-sg or uniformly-sized lists happen to mask the issue.

—No exploit Fix available
Published
Oct 6, 2026
Updated
Oct 19, 2026
EPSS
0.1% · 8th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

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  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

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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.

—

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

    • 3.7affected
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before f448a5f5bd10d792440a1b08cf2e8f311767032daffected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before 2148db529f082d6e3ca95413bf943442f4ef30ccaffected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before d920c07aa6d89ec11afdb6976aafaee9563a5234affected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before 4a33886057e6d127555efb022879c583e966acc5affected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before 88a505330eb06128f7ce79a4c5e4832b7601b3d1affected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before bae65e4925928f77824ca0103122e2ed20ef5802affected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before 54ccc01012a240476edf641bf1a2b8bff54fe6aeaffected · git
    • c8acd6aa6bed3c0fd7898202f4ebc534db9085f2 and later · before 075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47affected · git
    • before 3.7not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.113-1~deb12u16.12.113-1~deb12u1
Debian:13linuxbefore 6.12.113-16.12.113-1
Debian:14linuxbefore 7.2.8-17.2.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-98296Oct 6, 2026 · Bluetooth: btintel_pcie: validate TX skb length in send_sync
    0Monitor
  • ← EarlierCVE-2026-98297Oct 6, 2026 · Bluetooth: hci_core: Fix queuing tx_work after workqueue is drained
    0Monitor
  • Later →CVE-2026-98299Oct 6, 2026 · tcp: do not let tcp_rmem be set below 4096
    0Monitor

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 Linux075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47Vendor (CNA)
Linux Linux2148db529f082d6e3ca95413bf943442f4ef30ccVendor (CNA)
Linux Linux4a33886057e6d127555efb022879c583e966acc5Vendor (CNA)
Linux Linux54ccc01012a240476edf641bf1a2b8bff54fe6aeVendor (CNA)
Linux Linux88a505330eb06128f7ce79a4c5e4832b7601b3d1Vendor (CNA)
Linux Linuxbae65e4925928f77824ca0103122e2ed20ef5802Vendor (CNA)
Linux Linuxd920c07aa6d89ec11afdb6976aafaee9563a5234Vendor (CNA)
Linux Linuxf448a5f5bd10d792440a1b08cf2e8f311767032dVendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.06.6.158.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.113-1 · Debian:13Package registry (OSV)
debian:linux7.2.8-1 · Debian:14Package registry (OSV)
debian:linux-6.126.12.113-1~deb12u1 · 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.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 11, 2026+36 d
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

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

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. Exploit maturity— → none
  2. Fix✗ → ✓

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

References

Show all references (7 more)

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

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