CVE-2026-46149
Estado: AnalizadaAlta (7.1)—
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show()
target_tg_pt_gp_members_show() formats LUN paths with snprintf() into a 256-byte stack buffer, then will memcpy() cur_len bytes from that buffer. snprintf() returns the length the output would have had, which can exceed the buffer size when the fabric WWN is long because iSCSI IQN names can be up to 223 bytes. The check at the memcpy() site only guards the destination page write, not the source read, so memcpy() will read past the stack buffer and copy adjacent stack contents to the sysfs reader, which when CONFIG_FORTIFY_SOURCE is enabled, fortify_panic() will be triggered.
Leer descripción completaMostrar menos
Commit 27e06650a5ea ("scsi: target: target_core_configfs: Add length check to avoid buffer overflow") added the same bound to the target_lu_gp_members_show() but the tg_pt_gp variant was missed so resolve that here.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Puntuación base: 7.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.14%
- Percentil entre todas las CVEs puntuadas: 3
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Impacto principal
T1005Data from Local Systemcollection80 % - Impacto secundario
T1499.004Application or System Exploitationimpact75 %
Acceso local (AV:L) sin interacción (UI:N) con privilegios (PR:L) permite lectura de memoria adyacente (C:H) y denial of servicio por fortify_panic() (A:H) en kernel Linux.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-674
Referencias
- https://git.kernel.org/stable/c/00d91bfdce5033f5d9b4915638ae9b0553848b5d
- https://git.kernel.org/stable/c/12f2201a56957ba020392223a7393a5eba080c1b
- https://git.kernel.org/stable/c/1f678d13e939f91840cb1ebe9b88544923539d3c
- https://git.kernel.org/stable/c/72cc5ea7ef32bb5fa38bf0dd2e56fcd73aa8c89e
- https://git.kernel.org/stable/c/772a896a56e0e3ef9424a025cec9176f9d8f4552
- https://git.kernel.org/stable/c/d3cc9d490c207d57a289054397349f6f8c90354e
- https://git.kernel.org/stable/c/db0a4759d62cad4ff891e2d81ae4be73bb57f4a4
- https://git.kernel.org/stable/c/e501154f9d82c95d2719bcbbaf679d8fd3226ef7
JSON original (NVD)
Mostrar
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