CVE-2025-68742
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix invalid prog->stats access when update_effective_progs fails
Syzkaller triggers an invalid memory access issue following fault injection in update_effective_progs. The issue can be described as follows:
The reason is that fault injection caused update_effective_progs to fail and then changed the original prog into dummy_bpf_prog.prog in purge_effective_progs. Then a softirq came, and accessing the members of dummy_bpf_prog.prog in the softirq triggers invalid mem access.
To fix it, skip updating stats when stats is NULL.
Detalles técnicos trazas, registros y código del informe original
__cgroup_bpf_detach
update_effective_progs
compute_effective_progs
bpf_prog_array_alloc <-- fault inject
purge_effective_progs
/* change to dummy_bpf_prog */
array->items[index] = &dummy_bpf_prog.prog
---softirq start---
__do_softirq
...
__cgroup_bpf_run_filter_skb
__bpf_prog_run_save_cb
bpf_prog_run
stats = this_cpu_ptr(prog->stats)
/* invalid memory access */
flags = u64_stats_update_begin_irqsave(&stats->syncp)
---softirq end---
static_branch_dec(&cgroup_bpf_enabled_key[atype])CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.21%
- Percentil entre todas las CVEs puntuadas: 10
- Fecha de la puntuación: 6/10/2026
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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/2579c356ccd35d06238b176e4b460978186d804b
- https://git.kernel.org/stable/c/539137e3038ce6f953efd72110110f03c14c7d97
- https://git.kernel.org/stable/c/56905bb70c8b88421709bb4e32fcba617aa37d41
- https://git.kernel.org/stable/c/7dc211c1159d991db609bdf4b0fb9033c04adcbc
- https://git.kernel.org/stable/c/93d1964773ff513c9bd530f7686d3e48b786fa6b
- https://git.kernel.org/stable/c/bf2c990b012100610c0f1ec5c4ea434da2d080c2
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-68742",
"cveTags": [],
"metrics": {},
"affected": [
{
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],
"published": "2025-12-24T13:16:29.147",
"references": [
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{
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{
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{
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{
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},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html",
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix invalid prog->stats access when update_effective_progs fails\n\nSyzkaller triggers an invalid memory access issue following fault\ninjection in update_effective_progs. The issue can be described as\nfollows:\n\n__cgroup_bpf_detach\n update_effective_progs\n compute_effective_progs\n bpf_prog_array_alloc <-- fault inject\n purge_effective_progs\n /* change to dummy_bpf_prog */\n array->items[index] = &dummy_bpf_prog.prog\n\n---softirq start---\n__do_softirq\n ...\n __cgroup_bpf_run_filter_skb\n __bpf_prog_run_save_cb\n bpf_prog_run\n stats = this_cpu_ptr(prog->stats)\n /* invalid memory access */\n flags = u64_stats_update_begin_irqsave(&stats->syncp)\n---softirq end---\n\n static_branch_dec(&cgroup_bpf_enabled_key[atype])\n\nThe reason is that fault injection caused update_effective_progs to fail\nand then changed the original prog into dummy_bpf_prog.prog in\npurge_effective_progs. Then a softirq came, and accessing the members of\ndummy_bpf_prog.prog in the softirq triggers invalid mem access.\n\nTo fix it, skip updating stats when stats is NULL."
}
],
"lastModified": "2026-07-14T13:17:59.387",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}