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NVD / CVE Program· CNA Linux

CVE-2025-68229: scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()

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: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 13aff3b8a7184281b134698704d6c06863a8361b, 1c9ba455b5073253ceaadae4859546e38e8261fe, 3d8c517f6eb27e47b1a198e05f8023038329b40b; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 6.6.119.3-1.

Low priority for now. Upgrade to Linux Linux 13aff3b8a7184281b134698704d6c06863a8361b, 1c9ba455b5073253ceaadae4859546e38e8261fe, 3d8c517f6eb27e47b1a198e05f8023038329b40b; azl3 kernel 6.6.117.1-1 on Azure Linux 3.0 6.6.119.3-1 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: scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show() If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it. Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: <TASK> configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ...

—No exploit Fix available
Published
Dec 16, 2025
Updated
Oct 14, 2026
EPSS
0.2% · 10th 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 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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

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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

    • 4.5affected
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before 63f511d3855f7f4b35dd63dbc58fc3d935a81268affected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before 3d8c517f6eb27e47b1a198e05f8023038329b40baffected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before f449a1edd7a13bb025aaf9342ea6f8bf92684bbfaffected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before 1c9ba455b5073253ceaadae4859546e38e8261feaffected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before a6ef60898ddaf1414592ce3e5b0d94276d631663affected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before 72e8831079266749a7023618a0de2f289a9dced6affected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before 13aff3b8a7184281b134698704d6c06863a8361baffected · git
    • 2628b352c3d4905adf8129ea50900bd980b6ccef and later · before e6965188f84a7883e6a0d3448e86b0cf29b24dfcaffected · git
    • before 4.5not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.159-16.1.159-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.10-16.17.10-1

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-2025-68227Dec 16, 2025 · mptcp: Fix proto fallback detection with BPF
    0Monitor
  • ← EarlierCVE-2025-68228Dec 16, 2025 · drm/plane: Fix create_in_format_blob() return value
    0Monitor
  • Later →CVE-2025-68230Dec 16, 2025 · drm/amdgpu: fix gpu page fault after hibernation on PF passthrough
    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 Linux13aff3b8a7184281b134698704d6c06863a8361bVendor (CNA)
Linux Linux1c9ba455b5073253ceaadae4859546e38e8261feVendor (CNA)
Linux Linux3d8c517f6eb27e47b1a198e05f8023038329b40bVendor (CNA)
Linux Linux63f511d3855f7f4b35dd63dbc58fc3d935a81268Vendor (CNA)
Linux Linux72e8831079266749a7023618a0de2f289a9dced6Vendor (CNA)
Linux Linuxa6ef60898ddaf1414592ce3e5b0d94276d631663Vendor (CNA)
Linux Linuxe6965188f84a7883e6a0d3448e86b0cf29b24dfcVendor (CNA)
Linux Linuxf449a1edd7a13bb025aaf9342ea6f8bf92684bbfVendor (CNA)
azl3 kernel 6.6.117.1-1 on Azure Linux 3.06.6.119.3-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.159-1 · 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

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