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CVE-2026-93222— signal: avoid shared siginfo namespace rewrites

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，以下漏洞已得到修复： 信号：避免共享 siginfo 命名空间的改写 send_signal_locked() 会对目标命名空间的发送者 ID 进行重写。由于组发送会复用相同的 siginfo 信息，因此一个接收方可能会影响到下一个接收方。 在修改 siginfo 之前，先对其进行拷贝。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P7

Affected Version Matrix 22

VendorProduct Version RangeStatus
Linux Linux 7a0cf094944e2540758b7f957eb6846d5126f535< e015d1ac6b43a23c52c5163299414ae77d7d4ae0 affected
7a0cf094944e2540758b7f957eb6846d5126f535< 4ee7c4e4719a825052f42f02ec159b5b42b68fbc affected
7a0cf094944e2540758b7f957eb6846d5126f535< 148b0dae2a1755beb873a2aab51fb191414f068c affected
7a0cf094944e2540758b7f957eb6846d5126f535< 6b1de022304ef85284c5933a5fb8492f6f54efc9 affected
7a0cf094944e2540758b7f957eb6846d5126f535< 03c8761e75d1619906bb503686f9cc1dfc6a67f4 affected
7a0cf094944e2540758b7f957eb6846d5126f535< a246da20c8e4ae4319511c698b9f26ad0ad1769f affected
7a0cf094944e2540758b7f957eb6846d5126f535< b655c2040ce836afad5643842543567b31f8c11d affected
7a0cf094944e2540758b7f957eb6846d5126f535< d19cdc167e696714509e87d3f7ae765b6e164589 affected
… +14 more rows
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I. Basic Information for CVE-2026-93222

Vulnerability Information
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Vulnerability Title
signal: avoid shared siginfo namespace rewrites
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: signal: avoid shared siginfo namespace rewrites send_signal_locked() rewrites sender ids for the target namespace. Group sends reuse the same siginfo, so one recipient can affect the next. Copy the siginfo before changing it.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 7a0cf094944e2540758b7f957eb6846d5126f535 ~ e015d1ac6b43a23c52c5163299414ae77d7d4ae0 -
Linux Linux 5.3 -

II. Public POCs for CVE-2026-93222

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III. Intelligence Information for CVE-2026-93222

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Patches & Fixes for CVE-2026-93222 (8)

Same Patch Batch · Linux · 2026-09-24 · 234 CVEs total

CVE-2026-93207 9.8 CRITICAL SUNRPC: Zero rpc_gss_wire_cred at svcauth_gss_decode_credbody() entry
CVE-2026-97413 9.8 CRITICAL RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
CVE-2026-93228 9.1 CRITICAL svcrdma: Reject Write/Reply chunks with segcount 0
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-97442 8.8 HIGH wifi: ath11k: fix invalid data access in ath11k_dp_rx_h_undecap_nwifi
CVE-2026-97409 8.8 HIGH nvme-fc: Do not cancel requests in io target before it is initialized
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-97451 8.4 HIGH ACPICA: Fix integer overflow in acpi_ex_opcode_3A_1T_1R() (mid_op)
CVE-2026-97452 8.4 HIGH ACPICA: Prevent adding invalid references
CVE-2026-97455 8.4 HIGH ACPICA: Fix use-after-free in acpi_ds_terminate_control_method()
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97433 8.2 HIGH nvme: validate FDP configuration descriptor sizes
CVE-2026-93221 8.1 HIGH nfsd: convert nfsd_net boolean flags to unsigned long flags word
CVE-2026-93224 8.1 HIGH svcrdma: Fix unmatched rn_unregister on failed accept

Showing top 20 of 234 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-93222

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