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CVE-2026-97472— ipv6: addrconf: fix temp address generation after prefix deprecation

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，已修复以下漏洞： ipv6: addrconf：修复前缀弃用后临时地址生成的问题 当路由器暂时弃用 IPv6 前缀（例如通过发送“首选生命周期”为 0 的路由器公告（Router Advertisement），或让前缀生命周期自然过期），随后又恢复该前缀时，内核会永久丧失为该前缀生成临时隐私地址（符合 RFC 8981 规范）的能力。 出现此问题的原因是：当当前临时地址即将过期时，地址生成工作器（address worker）会尝试生成一个新的临时地址作为替换。但由于基础前缀已被弃用，尽管内

AI Predicted 5.3 Difficulty: Easy EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 76f793e3a47139d340185cbc1a314740c09b13d3< b00f7c1da82a809156f785ed37536c2d2584927d affected
76f793e3a47139d340185cbc1a314740c09b13d3< 6da8ba900b85e6478e211427630c67595fb707a4 affected
76f793e3a47139d340185cbc1a314740c09b13d3< 4f7d2a8dc364c4e55d0a1533451339008512933f affected
76f793e3a47139d340185cbc1a314740c09b13d3< f601ec5c92b3260c742f27a5d2fd289e30ae798f affected
76f793e3a47139d340185cbc1a314740c09b13d3< bff7b87dfa28a1502c18d0c6f1fadda5162fa854 affected
76f793e3a47139d340185cbc1a314740c09b13d3< 4df5597c65446135362f72880995e8920f058fa0 affected
76f793e3a47139d340185cbc1a314740c09b13d3< e20d8922aa8fe441d291364c96c2179a005b79ea affected
3.2 affected
… +8 more rows
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I. Basic Information for CVE-2026-97472

Vulnerability Information
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Vulnerability Title
ipv6: addrconf: fix temp address generation after prefix deprecation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: addrconf: fix temp address generation after prefix deprecation When a router temporarily deprecates an IPv6 prefix (either by sending a Router Advertisement with Preferred Lifetime = 0 or by letting the lifetime expire) and later restores it, the kernel permanently loses its ability to generate temporary privacy addresses (RFC 8981) for that prefix. This happens because the address worker attempts to generate a replacement temporary address when the current one nears expiration. As the base prefix is deprecated already, the generation fails after marking the temporary address as already having spawned a replacement (ifp->regen_count++). When the router eventually restores the prefix, the temporary address becomes active again. However, once it naturally expires, the address worker sees this temporary address already tried to generate one and skips the regeneration. Fix the issue by resetting the regen_count check of the latest temp address generated for the prefix updated by the incoming RA.
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 76f793e3a47139d340185cbc1a314740c09b13d3 ~ b00f7c1da82a809156f785ed37536c2d2584927d -
Linux Linux 3.2 -

II. Public POCs for CVE-2026-97472

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III. Intelligence Information for CVE-2026-97472

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Patches & Fixes for CVE-2026-97472 (7)

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-2026-93799 8.8 HIGH wifi: iwlwifi: mvm: validate sta_id in BA window status notif
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-2026-93806 8.8 HIGH wifi: cfg80211: validate assoc response length before status and IE access
CVE-2026-93793 8.8 HIGH wifi: iwlwifi: mvm: validate TX_CMD response layout
CVE-2026-93790 8.8 HIGH wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif
CVE-2026-93284 8.8 HIGH drm/pagemap: dma-unmap pages before handling migration errors
CVE-2026-93280 8.8 HIGH greybus: audio: bound the topology section sizes against the fetched size
CVE-2026-97509 8.8 HIGH thunderbolt: Keep XDomain reference during the lifetime of a service
CVE-2026-93827 8.4 HIGH virtio-fs: avoid double-free on failed queue setup
CVE-2026-97450 8.4 HIGH ACPICA: validate handler object type in two places
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-2026-97433 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-2026-93786 8.1 HIGH ksmbd: preserve VFS inherited POSIX ACL mask

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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