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CVE-2025-38258— mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write

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DAMON sysfs未释放旧的memcg_path缓冲区，可能导致内存泄漏。

AI Predicted 7.8 Difficulty: Easy EPSS 0.17% · P5

Possible ATT&CK Techniques 1 AI

T1529 · System Shutdown/Reboot

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 7ee161f18b5da5170b5d6a51aace49d312099128< 490a43d07f1663d827e802720d30cbc0494e4f81 affected
7ee161f18b5da5170b5d6a51aace49d312099128< c5d5b0047b0c0f304608f3824139f7bd34c48413 affected
7ee161f18b5da5170b5d6a51aace49d312099128< 4a158ac0538dd5695eeaa00aa0720d711f3e4ef1 affected
7ee161f18b5da5170b5d6a51aace49d312099128< 4f489fe6afb395dbc79840efa3c05440b760d883 affected
6.3 affected
< 6.3 unaffected
6.6.96≤ 6.6.* unaffected
6.12.36≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-38258

Vulnerability Information
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Vulnerability Title
mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write memcg_path_store() assigns a newly allocated memory buffer to filter->memcg_path, without deallocating the previously allocated and assigned memory buffer. As a result, users can leak kernel memory by continuously writing a data to memcg_path DAMOS sysfs file. Fix the leak by deallocating the previously set memory buffer.
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DAMON sysfs未释放旧的memcg_path缓冲区，可能导致内存泄漏。
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 7ee161f18b5da5170b5d6a51aace49d312099128 ~ 490a43d07f1663d827e802720d30cbc0494e4f81 -
Linux Linux 6.3 -

II. Public POCs for CVE-2025-38258

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III. Intelligence Information for CVE-2025-38258

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Same Patch Batch · Linux · 2025-07-09 · 26 CVEs total

CVE-2025-38264 9.8 CRITICAL nvme-tcp: sanitize request list handling
CVE-2025-38246 9.8 CRITICAL bnxt: properly flush XDP redirect lists
CVE-2025-38253 8.8 HIGH HID: wacom: fix crash in wacom_aes_battery_handler()
CVE-2025-38238 8.8 HIGH scsi: fnic: Fix crash in fnic_wq_cmpl_handler when FDMI times out
CVE-2025-38252 7.8 HIGH cxl/ras: Fix CPER handler device confusion
CVE-2025-38261 7.8 HIGH riscv: save the SR_SUM status over switches
CVE-2025-38262 7.8 HIGH tty: serial: uartlite: register uart driver in init
CVE-2025-38250 7.8 HIGH Bluetooth: hci_core: Fix use-after-free in vhci_flush()
CVE-2025-38242 7.8 HIGH mm: userfaultfd: fix race of userfaultfd_move and swap cache
CVE-2025-38248 7.8 HIGH bridge: mcast: Fix use-after-free during router port configuration
CVE-2025-38244 7.5 HIGH smb: client: fix potential deadlock when reconnecting channels
CVE-2025-38239 7.3 HIGH scsi: megaraid_sas: Fix invalid node index
CVE-2025-38257 7.3 HIGH s390/pkey: Prevent overflow in size calculation for memdup_user()
CVE-2025-38255 lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly()
CVE-2025-38263 bcache: fix NULL pointer in cache_set_flush()
CVE-2025-38241 mm/shmem, swap: fix softlockup with mTHP swapin
CVE-2025-38260 btrfs: handle csum tree error with rescue=ibadroots correctly
CVE-2025-38259 ASoC: codecs: wcd9335: Fix missing free of regulator supplies
CVE-2025-38256 io_uring/rsrc: fix folio unpinning
CVE-2025-38254 drm/amd/display: Add sanity checks for drm_edid_raw()

Showing top 20 of 26 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38258

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