---
cve: "CVE-2026-74557"
severity: "HIGH"
cvss: 7.5
epss: "33%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-08-15 13:18:01"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T16:49:44+02:00"
---

# CVE-2026-74557

> 7.5 HIGH

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer

iscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the
target-supplied data segment.  The segment carries a 2-byte sense length
followed by the sense bytes, so it must hold 2 + senselen bytes, but the
bounds check only requires datalen >= senselen:

	senselen = get_unaligned_be16(data);
	if (datalen < senselen)
		goto invalid_datalen;
	memcpy(sc->sense_buffer, data + 2,
	       min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));

A target that returns a SCSI Response whose datalen equals senselen
(with senselen data contents and end up in the command's sense buffer, which is
returned to userspace.

Account for the 2-byte sense length prefix in the check.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.265
- Kernel ≥ 5.15.216
- Kernel ≥ 6.1.183
- Kernel ≥ 6.6.151
- Kernel ≥ 6.12.103
- Kernel ≥ 6.18.44
- Kernel ≥ 7.1.8

## Referenzen

- <https://git.kernel.org/stable/c/812f1ae95b22419422972748f173b0916ee4d621>
- <https://git.kernel.org/stable/c/fef6167e8149896cd81bea333fd51b1c91239149>
- <https://git.kernel.org/stable/c/baa04572673125e4d5bc309b4077d1cb46cc78d1>
- <https://git.kernel.org/stable/c/7567f06abdefb1caf2d836107c4d08c5185c650e>
- <https://git.kernel.org/stable/c/60499924faf4ef97e84228c20515218ef121facf>
- <https://git.kernel.org/stable/c/3ef209ca0b4b68c75e9a814d90cc916026b5a6ac>
- <https://git.kernel.org/stable/c/1f07a897d43c63e6c9458bf77450defef39b5833>
- <https://git.kernel.org/stable/c/98b87885de4b7f605533a2860685f5689fce8e82>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-74557) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_