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CVE-2025-40101— btrfs: fix memory leaks when rejecting a non SINGLE data profile without an RST

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，该漏洞源于未正确释放内存，可能导致内存泄漏。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 5906333cc4af7b3fdb8cfff1cb3e8e579bd13174< 187333e6d484c6630286bfdd07c79d6815a63887 affected
5906333cc4af7b3fdb8cfff1cb3e8e579bd13174< 602701d00439e113331ee9c1283e95afdcb8849d affected
5906333cc4af7b3fdb8cfff1cb3e8e579bd13174< fec9b9d3ced39f16be8d7afdf81f4dd2653da319 affected
6ffeca99bf6e84800133d21afd41c79d2f002db7 affected
6.7.11< 6.8 affected
6.8 affected
< 6.8 unaffected
6.12.55≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-40101

Vulnerability Information
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Vulnerability Title
btrfs: fix memory leaks when rejecting a non SINGLE data profile without an RST
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix memory leaks when rejecting a non SINGLE data profile without an RST At the end of btrfs_load_block_group_zone_info() the first thing we do is to ensure that if the mapping type is not a SINGLE one and there is no RAID stripe tree, then we return early with an error. Doing that, though, prevents the code from running the last calls from this function which are about freeing memory allocated during its run. Hence, in this case, instead of returning early, we set the ret value and fall through the rest of the cleanup code.
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，该漏洞源于未正确释放内存，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 5906333cc4af7b3fdb8cfff1cb3e8e579bd13174 ~ 187333e6d484c6630286bfdd07c79d6815a63887 -
Linux Linux 6.8 -

II. Public POCs for CVE-2025-40101

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III. Intelligence Information for CVE-2025-40101

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Same Patch Batch · Linux · 2025-10-30 · 20 CVEs total

CVE-2025-40099 9.4 CRITICAL cifs: parse_dfs_referrals: prevent oob on malformed input
CVE-2025-40095 7.8 HIGH usb: gadget: f_rndis: Refactor bind path to use __free()
CVE-2025-40105 7.8 HIGH vfs: Don't leak disconnected dentries on umount
CVE-2025-40104 7.8 HIGH ixgbevf: fix mailbox API compatibility by negotiating supported features
CVE-2025-40096 7.8 HIGH drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies
CVE-2025-40094 7.8 HIGH usb: gadget: f_acm: Refactor bind path to use __free()
CVE-2025-40093 7.8 HIGH usb: gadget: f_ecm: Refactor bind path to use __free()
CVE-2025-40092 7.8 HIGH usb: gadget: f_ncm: Refactor bind path to use __free()
CVE-2025-40090 7.5 HIGH ksmbd: fix recursive locking in RPC handle list access
CVE-2025-40087 7.5 HIGH NFSD: Define a proc_layoutcommit for the FlexFiles layout type
CVE-2025-40088 7.1 HIGH hfsplus: fix slab-out-of-bounds read in hfsplus_strcasecmp()
CVE-2025-40086 drm/xe: Don't allow evicting of BOs in same VM in array of VM binds
CVE-2025-40091 ixgbe: fix too early devlink_free() in ixgbe_remove()
CVE-2025-40097 ALSA: hda: Fix missing pointer check in hda_component_manager_init function
CVE-2025-40098 ALSA: hda: cs35l41: Fix NULL pointer dereference in cs35l41_get_acpi_mute_state()
CVE-2025-40089 cxl/features: Add check for no entries in cxl_feature_info
CVE-2025-40100 btrfs: do not assert we found block group item when creating free space tree
CVE-2025-40102 KVM: arm64: Prevent access to vCPU events before init
CVE-2025-40103 smb: client: Fix refcount leak for cifs_sb_tlink

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40101

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