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

CVE-2026-99019: scsi: ch: Do not keep references to data transfer element devices

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 1d35a17f1c2ed4154731895694a1a3557f0da766, 27c0f718d3b3c99e6d315308e95d987d0382a8a8, a34a230ccea1b8b667ae59dca11295a2c8f81738.

Low priority for now. Upgrade to Linux Linux 1d35a17f1c2ed4154731895694a1a3557f0da766, 27c0f718d3b3c99e6d315308e95d987d0382a8a8, a34a230ccea1b8b667ae59dca11295a2c8f81738 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: ch: Do not keep references to data transfer element devices ch_readconfig() looks up the scsi_device of every data transfer element whose SCSI id the changer reports in READ ELEMENT STATUS, and stores it in ch->dt[]. scsi_device_lookup() takes a reference, and nothing ever drops it: ch_destroy() frees the array with kfree(). ch->dt[] is read nowhere else - it only supplies the vendor, model and revision printed in the same loop. Once such a drive is removed, its scsi_device can never be released. It stays on the host's device list at its address, so a new device there is refused by anything that walks the list - target_core_pscsi reports "scsi_device_get() failed for H:C:T:L" - and the low-level driver's module can no longer be unloaded. Only a reboot recovers. It shows with any changer that reports its drives' ids; with the mhvtl virtual library (IBM 3573-TL personality), each create and remove of a library with four drives leaves four references behind, counted by the module's use count in lsmod. With ch not bound the count is unchanged, and with this patch applied it is unchanged too. Drop the reference as soon as the name has been printed, and remove the now unused dt[] array. That also removes the array leaked when ch_probe() fails after ch_readconfig(). The same leak was reported with an RFC patch in 2022, which was not merged.

—No exploit Fix available
Published
Oct 23, 2026
Updated
Oct 23, 2026
EPSS
0.1% · 7th 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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Noroxi analysis

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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

    • 2.6.13affected
    • daa6eda65a53e5addf86c6bc829129ff51b08bda and later · before ec6ecab1b7577ae555ee6b81480814d123dd9ec0affected · git
    • daa6eda65a53e5addf86c6bc829129ff51b08bda and later · before cef2cedb6f7a394b278775b3d6ffb9b20ecd61dbaffected · git
    • daa6eda65a53e5addf86c6bc829129ff51b08bda and later · before a34a230ccea1b8b667ae59dca11295a2c8f81738affected · git
    • daa6eda65a53e5addf86c6bc829129ff51b08bda and later · before 1d35a17f1c2ed4154731895694a1a3557f0da766affected · git
    • daa6eda65a53e5addf86c6bc829129ff51b08bda and later · before 27c0f718d3b3c99e6d315308e95d987d0382a8a8affected · git
    • before 2.6.13not affected · semver
    • 6.6.160 and later · up to and including 6.6.*not affected · semver
    • 6.12.114 and later · up to and including 6.12.*not affected · semver
    • 6.18.58 and later · up to and including 6.18.*not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxfrom 0—
Debian:14linuxbefore 7.2.11-17.2.11-1

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-2026-99017Oct 23, 2026 · riscv: errata: select RISCV_ALTERNATIVE_EARLY for THEAD GHOSTWRITE
    28Monitor
  • ← EarlierCVE-2026-99018Oct 23, 2026 · riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp
    31Monitor
  • Later →CVE-2026-99020Oct 23, 2026 · regulator: tps6594-regulator: Fix n_linear_ranges for TPS65224 BUCK2-4
    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 Linux1d35a17f1c2ed4154731895694a1a3557f0da766Vendor (CNA)
Linux Linux27c0f718d3b3c99e6d315308e95d987d0382a8a8Vendor (CNA)
Linux Linuxa34a230ccea1b8b667ae59dca11295a2c8f81738Vendor (CNA)
Linux Linuxcef2cedb6f7a394b278775b3d6ffb9b20ecd61dbVendor (CNA)
Linux Linuxec6ecab1b7577ae555ee6b81480814d123dd9ec0Vendor (CNA)
debian:linux7.2.11-1 · Debian:14Package 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. TodayOct 26, 2026+3 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 (4 more)

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

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