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CVE-2025-38550— ipv6: mcast: Delay put pmc->idev in mld_del_delrec()

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.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于过早释放pmc->idev引用，可能导致释放后重用。

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 15

VendorProduct Version RangeStatus
Linux Linux b564ec4491d24b40900c64ab9e29a208f17f3108< 1b5b413094af8d88a31b5df3fd262f6baca53841 affected
63ed8de4be81b699ca727e9f8e3344bd487806d7< 6e4eec86fe5f6b3fdbc702d1d36ac2a6e7ec0806 affected
63ed8de4be81b699ca727e9f8e3344bd487806d7< 728db00a14cacb37f36e9382ab5fad55caf890cc affected
63ed8de4be81b699ca727e9f8e3344bd487806d7< dcbc346f50a009d8b7f4e330f9f2e22d6442fa26 affected
63ed8de4be81b699ca727e9f8e3344bd487806d7< 7929d27c747eafe8fca3eecd74a334503ee4c839 affected
63ed8de4be81b699ca727e9f8e3344bd487806d7< 5f18e0130194550dff734e155029ae734378b5ea affected
63ed8de4be81b699ca727e9f8e3344bd487806d7< ae3264a25a4635531264728859dbe9c659fad554 affected
5.13 affected
… +7 more rows
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I. Basic Information for CVE-2025-38550

Vulnerability Information
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Vulnerability Title
ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: Delay put pmc->idev in mld_del_delrec() pmc->idev is still used in ip6_mc_clear_src(), so as mld_clear_delrec() does, the reference should be put after ip6_mc_clear_src() return.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于过早释放pmc->idev引用，可能导致释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux b564ec4491d24b40900c64ab9e29a208f17f3108 ~ 1b5b413094af8d88a31b5df3fd262f6baca53841 -
Linux Linux 5.13 -

II. Public POCs for CVE-2025-38550

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III. Intelligence Information for CVE-2025-38550

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Patches & Fixes for CVE-2025-38550 (2)

Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total

CVE-2025-38527 9.8 CRITICAL smb: client: fix use-after-free in cifs_oplock_break
CVE-2025-38533 9.8 CRITICAL net: libwx: fix the using of Rx buffer DMA
CVE-2025-38552 9.4 CRITICAL mptcp: plug races between subflow fail and subflow creation
CVE-2023-3867 9.1 CRITICAL ksmbd: fix out of bounds read in smb2_sess_setup
CVE-2023-4515 9.1 CRITICAL ksmbd: validate command request size
CVE-2023-32249 9.1 CRITICAL ksmbd: not allow guest user on multichannel
CVE-2025-38512 8.8 HIGH wifi: prevent A-MSDU attacks in mesh networks
CVE-2025-38511 8.8 HIGH drm/xe/pf: Clear all LMTT pages on alloc
CVE-2023-4130 8.1 HIGH ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
CVE-2023-3865 8.1 HIGH ksmbd: fix out-of-bound read in smb2_write
CVE-2025-38539 7.8 HIGH tracing: Add down_write(trace_event_sem) when adding trace event
CVE-2025-38532 7.8 HIGH net: libwx: properly reset Rx ring descriptor
CVE-2025-38542 7.8 HIGH net: appletalk: Fix device refcount leak in atrtr_create()
CVE-2025-38536 7.8 HIGH net: airoha: fix potential use-after-free in airoha_npu_get()
CVE-2025-38502 7.8 HIGH bpf: Fix oob access in cgroup local storage
CVE-2025-38523 7.5 HIGH cifs: Fix the smbd_response slab to allow usercopy
CVE-2025-38501 7.5 HIGH ksmbd: limit repeated connections from clients with the same IP
CVE-2025-38514 7.5 HIGH rxrpc: Fix oops due to non-existence of prealloc backlog struct
CVE-2025-38526 7.5 HIGH ice: add NULL check in eswitch lag check
CVE-2025-38524 7.5 HIGH rxrpc: Fix recv-recv race of completed call

Showing top 20 of 59 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38550

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