CVE-2026-45964

Estado: AnalizadaMedia (5.5)—

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

SUNRPC: fix gss_auth kref leak in gss_alloc_msg error path

Commit 5940d1cf9f42 ("SUNRPC: Rebalance a kref in auth_gss.c") added a kref_get(&gss_auth->kref) call to balance the gss_put_auth() done in gss_release_msg(), but forgot to add a corresponding kref_put() on the error path when kstrdup_const() fails.

If service_name is non-NULL and kstrdup_const() fails, the function jumps to err_put_pipe_version which calls put_pipe_version() and kfree(gss_msg), but never releases the gss_auth reference. This leads to a kref leak where the gss_auth structure is never freed.

Leer descripción completaMostrar menos

Add a forward declaration for gss_free_callback() and call kref_put() in the err_put_pipe_version error path to properly release the reference taken earlier.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.16%
Percentil entre todas las CVEs puntuadas: 5
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).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-401

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: fix gss_auth kref leak in gss_alloc_msg error path\n\nCommit 5940d1cf9f42 (\"SUNRPC: Rebalance a kref in auth_gss.c\") added\na kref_get(&gss_auth->kref) call to balance the gss_put_auth() done\nin gss_release_msg(), but forgot to add a corresponding kref_put()\non the error path when kstrdup_const() fails.\n\nIf service_name is non-NULL and kstrdup_const() fails, the function\njumps to err_put_pipe_version which calls put_pipe_version() and\nkfree(gss_msg), but never releases the gss_auth reference. This leads\nto a kref leak where the gss_auth structure is never freed.\n\nAdd a forward declaration for gss_free_callback() and call kref_put()\nin the err_put_pipe_version error path to properly release the\nreference taken earlier."
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