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CVE-2026-89532

Опубликовано: 14 сент. 2026
Источник: ubuntu
Приоритет: medium
EPSS Низкий
CVSS3: 9.1

Описание

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Fix pcl_for_each_segment for empty chunks When a parsed chunk list contains a chunk whose ch_segcount is zero, pcl_for_each_segment computes its inclusive upper bound as &chunk->ch_segments[ch_segcount - 1]. ch_segcount is u32, so the subtraction wraps to 0xFFFFFFFF and the bound lands far past the ch_segments flex array. The loop body then walks unrelated memory at sizeof(struct svc_rdma_segment) stride until it faults. A zero-segcount chunk is reachable from the wire: xdr_check_write_chunk() only rejects segcount values greater than rc_maxpages, and pcl_alloc_write() links a freshly allocated chunk onto rc_write_pcl/rc_reply_pcl before its segment-fill loop runs, so a Write or Reply chunk advertising zero segments leaves ch_segcount == 0 on the list. When the transport has negotiated Send-With-Invalidate, svc_rdma_get_inv_rkey() iterates all four PCLs with pcl_for_each_segment and dereferences segment->rs...

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jammy

needs-triage

noble

DNE

resolute

DNE

upstream

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Показывать по

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DNE

jammy

DNE

noble

needs-triage

resolute

DNE

upstream

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DNE

esm-infra-legacy/xenial

ignored

superseded by linux-hwe
esm-infra/bionic

ignored

superseded by linux-hwe-5.4
jammy

DNE

noble

DNE

resolute

DNE

upstream

ignored

end of life

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needs-triage

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DNE

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needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

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DNE

esm-infra/bionic

needs-triage

jammy

DNE

noble

DNE

resolute

DNE

upstream

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Показывать по

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DNE

jammy

needs-triage

noble

DNE

resolute

DNE

upstream

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devel

DNE

esm-infra/focal

ignored

end of kernel support
jammy

DNE

noble

DNE

resolute

DNE

upstream

ignored

end of life

Показывать по

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DNE

jammy

ignored

superseded by Ubuntu Pro ppa version
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DNE

realtime/jammy

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DNE

upstream

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DNE

jammy

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DNE

resolute

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DNE

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jammy

DNE

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DNE

resolute

DNE

upstream

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Показывать по

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DNE

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needs-triage

jammy

DNE

noble

DNE

resolute

DNE

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Показывать по

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DNE

esm-infra-legacy/xenial

needs-triage

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jammy

needs-triage

noble

DNE

resolute

DNE

upstream

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Показывать по

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DNE

jammy

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resolute

DNE

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DNE

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jammy

DNE

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DNE

resolute

DNE

upstream

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DNE

jammy

ignored

superseded by linux-lowlatency-hwe-6.2
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DNE

resolute

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upstream

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superseded by linux-lowlatency-hwe-6.2

Показывать по

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DNE

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replaced by linux-hwe-6.14
resolute

DNE

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ignored

replaced by linux-hwe-6.14

Показывать по

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DNE

jammy

ignored

superseded by linux-lowlatency-hwe-6.5
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DNE

resolute

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upstream

ignored

superseded by linux-lowlatency-hwe-6.5

Показывать по

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DNE

jammy

ignored

superseded by linux-lowlatency-hwe-6.8
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DNE

resolute

DNE

upstream

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superseded by linux-lowlatency-hwe-6.8

Показывать по

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DNE

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DNE

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end of kernel support
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end of kernel support

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DNE

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superseded by linux-nvidia-6.5
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superseded by linux-nvidia-6.8

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DNE

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resolute

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jammy

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DNE

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DNE

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DNE

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DNE

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Показывать по

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DNE

esm-infra/bionic

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DNE

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end of life

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DNE

esm-infra/focal

ignored

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jammy

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superseded by linux-oem-5.13

Показывать по

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DNE

esm-infra/focal

ignored

superseded by linux-oem-5.14
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DNE

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superseded by linux-oem-5.14

Показывать по

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DNE

esm-infra/focal

ignored

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DNE

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DNE

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replaced by linux-hwe-5.15

Показывать по

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DNE

jammy

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superseded by linux-oem-6.1
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superseded by linux-oem-6.1

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ignored

superseded by linux-oem-5.10
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superseded by linux-oem-5.10

Показывать по

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DNE

jammy

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superseded by linux-oem-6.1
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DNE

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superseded by linux-oem-6.1

Показывать по

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DNE

jammy

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DNE

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DNE

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superseded by linux-oem-6.5

Показывать по

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jammy

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superseded by linux-oem-6.14
resolute

DNE

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Показывать по

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DNE

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devel

DNE

jammy

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superseded by linux-oem-6.8
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DNE

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DNE

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superseded by linux-oem-6.8

Показывать по

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DNE

jammy

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superseded by linux-oem-6.14
resolute

DNE

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Показывать по

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DNE

resolute

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needs-triage

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needs-triage

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needs-triage

resolute

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Показывать по

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DNE

esm-infra/bionic

ignored

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Показывать по

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DNE

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superseded by linux-oracle-5.13

Показывать по

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DNE

esm-infra/focal

ignored

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jammy

DNE

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resolute

DNE

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superseded by linux-oracle-5.15

Показывать по

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needs-triage

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DNE

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esm-infra/bionic

ignored

superseded by linux-oracle-5.4
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DNE

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resolute

DNE

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superseded by linux-oracle-5.4

Показывать по

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DNE

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DNE

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DNE

esm-infra/focal

ignored

superseded by linux-oracle-5.11
jammy

DNE

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DNE

resolute

DNE

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superseded by linux-oracle-5.11

Показывать по

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jammy

DNE

noble

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DNE

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DNE

jammy

DNE

noble

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resolute

DNE

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devel

DNE

jammy

ignored

superseded by linux-oracle-6.8
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DNE

resolute

DNE

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superseded by linux-oracle-6.8

Показывать по

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jammy

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DNE

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jammy

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Показывать по

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Показывать по

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jammy

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ignored

superseded by Ubuntu Pro ppa version
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ignored

replaced by linux-raspi
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replaced by linux-raspi

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ignored

superseded by Ubuntu Pro ppa version
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ignored

superseded by Ubuntu Pro ppa version
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needs-triage

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Показывать по

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ignored

superseded by linux-riscv-5.8
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replaced by linux-riscv-6.14
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ignored

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Показывать по

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Показывать по

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DNE

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ignored

end of kernel support
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end of life

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superseded by linux-riscv-5.11
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superseded by linux-riscv-5.11

Показывать по

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superseded by linux-riscv-6.17
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Показывать по

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Показывать по

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end of kernel support
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Показывать по

EPSS

Процентиль: 39%
0.00463
Низкий

9.1 Critical

CVSS3

Связанные уязвимости

CVSS3: 5.9
redhat
4 дня назад

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Fix pcl_for_each_segment for empty chunks When a parsed chunk list contains a chunk whose ch_segcount is zero, pcl_for_each_segment computes its inclusive upper bound as &chunk->ch_segments[ch_segcount - 1]. ch_segcount is u32, so the subtraction wraps to 0xFFFFFFFF and the bound lands far past the ch_segments flex array. The loop body then walks unrelated memory at sizeof(struct svc_rdma_segment) stride until it faults. A zero-segcount chunk is reachable from the wire: xdr_check_write_chunk() only rejects segcount values greater than rc_maxpages, and pcl_alloc_write() links a freshly allocated chunk onto rc_write_pcl/rc_reply_pcl before its segment-fill loop runs, so a Write or Reply chunk advertising zero segments leaves ch_segcount == 0 on the list. When the transport has negotiated Send-With-Invalidate, svc_rdma_get_inv_rkey() iterates all four PCLs with pcl_for_each_segment and dereferences segment->rs...

CVSS3: 9.1
nvd
4 дня назад

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Fix pcl_for_each_segment for empty chunks When a parsed chunk list contains a chunk whose ch_segcount is zero, pcl_for_each_segment computes its inclusive upper bound as &chunk->ch_segments[ch_segcount - 1]. ch_segcount is u32, so the subtraction wraps to 0xFFFFFFFF and the bound lands far past the ch_segments flex array. The loop body then walks unrelated memory at sizeof(struct svc_rdma_segment) stride until it faults. A zero-segcount chunk is reachable from the wire: xdr_check_write_chunk() only rejects segcount values greater than rc_maxpages, and pcl_alloc_write() links a freshly allocated chunk onto rc_write_pcl/rc_reply_pcl before its segment-fill loop runs, so a Write or Reply chunk advertising zero segments leaves ch_segcount == 0 on the list. When the transport has negotiated Send-With-Invalidate, svc_rdma_get_inv_rkey() iterates all four PCLs with pcl_for_each_segment and dereferences segment->rs

CVSS3: 9.1
debian
4 дня назад

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

CVSS3: 9.1
github
4 дня назад

In the Linux kernel, the following vulnerability has been resolved: svcrdma: Fix pcl_for_each_segment for empty chunks When a parsed chunk list contains a chunk whose ch_segcount is zero, pcl_for_each_segment computes its inclusive upper bound as &chunk->ch_segments[ch_segcount - 1]. ch_segcount is u32, so the subtraction wraps to 0xFFFFFFFF and the bound lands far past the ch_segments flex array. The loop body then walks unrelated memory at sizeof(struct svc_rdma_segment) stride until it faults. A zero-segcount chunk is reachable from the wire: xdr_check_write_chunk() only rejects segcount values greater than rc_maxpages, and pcl_alloc_write() links a freshly allocated chunk onto rc_write_pcl/rc_reply_pcl before its segment-fill loop runs, so a Write or Reply chunk advertising zero segments leaves ch_segcount == 0 on the list. When the transport has negotiated Send-With-Invalidate, svc_rdma_get_inv_rkey() iterates all four PCLs with pcl_for_each_segment and dereferences segment-...

EPSS

Процентиль: 39%
0.00463
Низкий

9.1 Critical

CVSS3

Уязвимость CVE-2026-89532