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CVE-2025-38565— perf/core: Exit early on perf_mmap() fail

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perf_mmap失败时未正确处理，可能导致引用计数泄漏。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< 5ffda7f3ed76ec8defc19d985e33b3b82ba07839 affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< 9b90a48c7de828a15c7a4fc565d46999c6e22d6b affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< de85e72598d89880a02170a1cbc27b35a7d978a9 affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< 27d44145bd576bbef9bf6165bcd78128ec3e6cbd affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< f41e9eba77bf97626e04296dc5677d02816d2432 affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< 92043120a2e992800580855498ab8507e1b22db9 affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< 163b0d1a209fe0df5476c1df2330ca12b55abf92 affected
1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb< 7ff8521f30c4c2fcd4e88bd7640486602bf8a650 affected
… +12 more rows
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I. Basic Information for CVE-2025-38565

Vulnerability Information
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Vulnerability Title
perf/core: Exit early on perf_mmap() fail
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: perf/core: Exit early on perf_mmap() fail When perf_mmap() fails to allocate a buffer, it still invokes the event_mapped() callback of the related event. On X86 this might increase the perf_rdpmc_allowed reference counter. But nothing undoes this as perf_mmap_close() is never called in this case, which causes another reference count leak. Return early on failure to prevent that.
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
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perf_mmap失败时未正确处理，可能导致引用计数泄漏。
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 1e0fb9ec679c9273a641f1d6f3d25ea47baef2bb ~ 5ffda7f3ed76ec8defc19d985e33b3b82ba07839 -
Linux Linux 4.0 -

II. Public POCs for CVE-2025-38565

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III. Intelligence Information for CVE-2025-38565

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Same Patch Batch · Linux · 2025-08-19 · 59 CVEs total

CVE-2025-38561 9.8 CRITICAL ksmbd: fix Preauh_HashValue race condition
CVE-2025-38566 9.8 CRITICAL sunrpc: fix handling of server side tls alerts
CVE-2025-38560 9.3 CRITICAL x86/sev: Evict cache lines during SNP memory validation
CVE-2025-38601 8.8 HIGH wifi: ath11k: clear initialized flag for deinit-ed srng lists
CVE-2025-38600 8.8 HIGH wifi: mt76: mt7925: fix off by one in mt7925_mcu_hw_scan()
CVE-2025-38599 8.8 HIGH wifi: mt76: mt7996: Fix possible OOB access in mt7996_tx()
CVE-2025-38592 8.8 HIGH Bluetooth: hci_devcd_dump: fix out-of-bounds via dev_coredumpv
CVE-2025-38608 8.6 HIGH bpf, ktls: Fix data corruption when using bpf_msg_pop_data() in ktls
CVE-2025-38574 8.6 HIGH pptp: ensure minimal skb length in pptp_xmit()
CVE-2025-38571 8.2 HIGH sunrpc: fix client side handling of tls alerts
CVE-2025-38595 7.8 HIGH xen: fix UAF in dmabuf_exp_from_pages()
CVE-2025-38580 7.8 HIGH ext4: fix inode use after free in ext4_end_io_rsv_work()
CVE-2025-38607 7.8 HIGH bpf: handle jset (if a & b ...) as a jump in CFG computation
CVE-2025-38614 7.8 HIGH eventpoll: Fix semi-unbounded recursion
CVE-2025-38615 7.8 HIGH fs/ntfs3: cancle set bad inode after removing name fails
CVE-2025-38604 7.8 HIGH wifi: rtl818x: Kill URBs before clearing tx status queue
CVE-2025-38593 7.8 HIGH Bluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'
CVE-2025-38586 7.8 HIGH bpf, arm64: Fix fp initialization for exception boundary
CVE-2025-38582 7.8 HIGH RDMA/hns: Fix double destruction of rsv_qp
CVE-2025-38555 7.8 HIGH usb: gadget : fix use-after-free in composite_dev_cleanup()

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-2025-38565

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