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NVD / CVE Program· CNA Linux

CVE-2026-23112: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec

Noroxi assessment

Priority: Monitor (action score 39/100)

  • 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: 0.46% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Linux Linux 0b9981751be14b59b4473383c731c833738aebdb, 1385be357e8acd09b36e026567f3a9d5c61139de, 19672ae68d52ff75347ebe2420dde1b07adca09f.

Low priority for now. Upgrade to Linux Linux 0b9981751be14b59b4473383c731c833738aebdb, 1385be357e8acd09b36e026567f3a9d5c61139de, 19672ae68d52ff75347ebe2420dde1b07adca09f 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: nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec.

CriticalCVSS 9.8 · v3.1—No exploit Fix available
Published
Feb 13, 2026
Updated
Oct 19, 2026
EPSS
0.4% · 40th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
9.8
CNA · Linux
9.8
agree

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-2026-23112

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 kernel5.0 and later · before 5.10.250
  • linux linux kernel5.11 and later · before 5.15.200
  • linux linux kernel5.16 and later · before 6.1.163
  • linux linux kernel6.2 and later · before 6.6.124
  • linux linux kernel6.7 and later · before 6.12.70
  • linux linux kernel6.13 and later · before 6.18.10
  • linux linux kernel6.19

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

    • 5.0affected
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before 0b9981751be14b59b4473383c731c833738aebdbaffected · git
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before 42afe8ed8ad2de9c19457156244ef3e1eca94b5daffected · git
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before 1385be357e8acd09b36e026567f3a9d5c61139deaffected · git
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before dca1a6ba0da9f472ef040525fab10fd9956db59faffected · git
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before 19672ae68d52ff75347ebe2420dde1b07adca09faffected · git
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before ab200d71553bdcf4de554a5985b05b2dd606bc57affected · git
    • 872d26a391da92ed8f0c0f5cb5fef428067b7f30 and later · before 52a0a98549344ca20ad81a4176d68d28e3c05a5caffected · git
    • before 5.0not affected · semver
    • 5.10.253 and later · up to and including 5.10.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:11linuxbefore 5.10.251-15.10.251-1
Debian:12linuxbefore 6.1.164-16.1.164-1
Debian:13linuxbefore 6.12.73-16.12.73-1
Debian:14linuxbefore 6.18.10-16.18.10-1

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-2026-23110Feb 4, 2026 · scsi: core: Wake up the error handler when final completions race against each other
    18Monitor
  • ← EarlierCVE-2026-23111Feb 13, 2026 · netfilter: nf_tables: fix inverted genmask check in nft_map_catchall_activate()
    31Monitor
  • Later →CVE-2025-71200Feb 14, 2026 · mmc: sdhci-of-dwcmshc: Prevent illegal clock reduction in HS200/HS400 mode
    22Monitor

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 Linux0b9981751be14b59b4473383c731c833738aebdbVendor (CNA)
Linux Linux1385be357e8acd09b36e026567f3a9d5c61139deVendor (CNA)
Linux Linux19672ae68d52ff75347ebe2420dde1b07adca09fVendor (CNA)
Linux Linux42afe8ed8ad2de9c19457156244ef3e1eca94b5dVendor (CNA)
Linux Linux52a0a98549344ca20ad81a4176d68d28e3c05a5cVendor (CNA)
Linux Linuxab200d71553bdcf4de554a5985b05b2dd606bc57Vendor (CNA)
Linux Linuxdca1a6ba0da9f472ef040525fab10fd9956db59fVendor (CNA)
debian:linux6.1.164-1 · 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.

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

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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. SSVC exploitation— → 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.

All records