CVE-2025-22005
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().
fib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything when it fails.
Commit 7dd73168e273 ("ipv6: Always allocate pcpu memory in a fib6_nh") moved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init() but forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in case it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak.
Let's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the error path.
Note that we can remove the fib6_nh_release() call in nh_create_ipv6() later in net-next.git.
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: 0.21%
- Percentil entre todas las CVEs puntuadas: 11
- 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)
CWE
- CWE-401
- CWE-401
Referencias
- https://git.kernel.org/stable/c/119dcafe36795a15ae53351cbbd6177aaf94ffef
- https://git.kernel.org/stable/c/16267a5036173d0173377545b4b6021b081d0933
- https://git.kernel.org/stable/c/1bd12dfc058e1e68759d313d7727d68dbc1b8964
- https://git.kernel.org/stable/c/29d91820184d5cbc70f3246d4911d96eaeb930d6
- https://git.kernel.org/stable/c/596a883c4ce2d2e9c175f25b98fed3a1f33fea38
- https://git.kernel.org/stable/c/77c41cdbe6bce476e08d3251c0d501feaf10a9f3
- https://git.kernel.org/stable/c/9740890ee20e01f99ff1dde84c63dcf089fabb98
- https://git.kernel.org/stable/c/d3d5b4b5ae263c3225db363ba08b937e2e2b0380
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix memleak of nhc_pcpu_rth_output in fib_check_nh_v6_gw().\n\nfib_check_nh_v6_gw() expects that fib6_nh_init() cleans up everything\nwhen it fails.\n\nCommit 7dd73168e273 (\"ipv6: Always allocate pcpu memory in a fib6_nh\")\nmoved fib_nh_common_init() before alloc_percpu_gfp() within fib6_nh_init()\nbut forgot to add cleanup for fib6_nh->nh_common.nhc_pcpu_rth_output in\ncase it fails to allocate fib6_nh->rt6i_pcpu, resulting in memleak.\n\nLet's call fib_nh_common_release() and clear nhc_pcpu_rth_output in the\nerror path.\n\nNote that we can remove the fib6_nh_release() call in nh_create_ipv6()\nlater in net-next.git."
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