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CVE-2026-74457· NVD / CVE Program· CNA Linux

can: peak_usb: add bounds check for USB channel index

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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 0149fdb50a30944827acf9600a2cc44de0325a7f, 0c9268457bd6e4058fe55b4db01b16661c2eacf5, 18b1a868a2cda66fb438007ba47ce5f2484db381; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 0149fdb50a30944827acf9600a2cc44de0325a7f, 0c9268457bd6e4058fe55b4db01b16661c2eacf5, 18b1a868a2cda66fb438007ba47ce5f2484db381; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1 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: can: peak_usb: add bounds check for USB channel index The channel control index ctrl_idx is derived from rx->len which comes directly from a device USB payload. The mask 0x0f allows values 0-15, but the array size of usb_if->dev[] is only 2. Values 2-15 cause heap out-of-bounds read, eventually causing kernel panic in the IRQ context. Add bounds checking for ctrl_idx before the array access in both pcan_usb_pro_handle_canmsg() and pcan_usb_pro_handle_error().

—No exploit Fix available
Published
Aug 15, 2026
Updated
Aug 19, 2026
EPSS
0.1% · 6th 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%

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.

—

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

    • 3.4affected
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 18b1a868a2cda66fb438007ba47ce5f2484db381affected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 0c9268457bd6e4058fe55b4db01b16661c2eacf5affected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 94fb6fe83ce152532b11b36730b30f3dc0c94217affected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 825c903ca3c98cd0cf0e3de8ab8f2604a5339b3faffected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before f97b7e5e1cdaae15cd95b3a360028c7929664969affected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 1acab790b7cecd4e144d1d18bdfe549e282f6b0baffected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 0149fdb50a30944827acf9600a2cc44de0325a7faffected · git
    • d8a199355f8f8a0797c00d98788d7282c9ea38bd and later · before 39132f166ca8ce00ae60d8a9068e06a60943cc4baffected · git
    • before 3.4not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.107-1~deb12u16.12.107-1~deb12u1
Debian:13linuxbefore 6.12.105-16.12.105-1
Debian:14linuxbefore 7.1.8-17.1.8-1

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-2026-74454Aug 15, 2026 · drm/vc4: Supply the overflow slot size in BPOS, not the whole bin BO size
    31Monitor
  • ← EarlierCVE-2026-74455Aug 15, 2026 · can: peak_usb: validate uCAN receive record lengths
    0Monitor
  • Later →CVE-2026-74458Aug 15, 2026 · can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents
    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 Linux0149fdb50a30944827acf9600a2cc44de0325a7fVendor (CNA)
Linux Linux0c9268457bd6e4058fe55b4db01b16661c2eacf5Vendor (CNA)
Linux Linux18b1a868a2cda66fb438007ba47ce5f2484db381Vendor (CNA)
Linux Linux1acab790b7cecd4e144d1d18bdfe549e282f6b0bVendor (CNA)
Linux Linux39132f166ca8ce00ae60d8a9068e06a60943cc4bVendor (CNA)
Linux Linux825c903ca3c98cd0cf0e3de8ab8f2604a5339b3fVendor (CNA)
Linux Linux94fb6fe83ce152532b11b36730b30f3dc0c94217Vendor (CNA)
Linux Linuxf97b7e5e1cdaae15cd95b3a360028c7929664969Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.06.6.152.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.107-1~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.

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).

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

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. 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.

All records