CVE-2025-71184— btrfs: fix NULL dereference on root when tracing inode eviction
Possible ATT&CK Techniques 1AI
T1083 · File and Directory DiscoveryAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1abe9b8a138c9988ba8f7bfded6453649a31541f< 64d8abd8c5305795a2b35fc96039d99d34f5e762 | affected |
1abe9b8a138c9988ba8f7bfded6453649a31541f< 582ba48e4a4c06fef6bdcf4e57b7b9af660bbd0c | affected | ||
1abe9b8a138c9988ba8f7bfded6453649a31541f< 99e057f3d3ef24b99a7b1d84e01dd1bd890098da | affected | ||
1abe9b8a138c9988ba8f7bfded6453649a31541f< f157dd661339fc6f5f2b574fe2429c43bd309534 | affected | ||
2.6.39 | affected | ||
< 2.6.39 | unaffected | ||
6.6.130≤ 6.6.* | unaffected | ||
6.12.66≤ 6.12.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2025-71184
Vulnerability Information
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Vulnerability Title
btrfs: fix NULL dereference on root when tracing inode eviction
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix NULL dereference on root when tracing inode eviction When evicting an inode the first thing we do is to setup tracing for it, which implies fetching the root's id. But in btrfs_evict_inode() the root might be NULL, as implied in the next check that we do in btrfs_evict_inode(). Hence, we either should set the ->root_objectid to 0 in case the root is NULL, or we move tracing setup after checking that the root is not NULL. Setting the rootid to 0 at least gives us the possibility to trace this call even in the case when the root is NULL, so that's the solution taken here.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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，该漏洞源于跟踪inode回收时可能对空根目录进行解引用，可能导致空指针取消引用。
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
II. Public POCs for CVE-2025-71184
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-71184 (1)
Same Patch Batch · Linux · 2026-01-31 · 37 CVEs total
| CVE-2026-23019 | net: marvell: prestera: fix NULL dereference on devlink_alloc() failure | |
| CVE-2025-71187 | dmaengine: sh: rz-dmac: fix device leak on probe failure | |
| CVE-2025-71186 | dmaengine: stm32: dmamux: fix device leak on route allocation | |
| CVE-2025-71185 | dmaengine: ti: dma-crossbar: fix device leak on am335x route allocation | |
| CVE-2026-23024 | idpf: fix memory leak of flow steer list on rmmod | |
| CVE-2026-23023 | idpf: fix memory leak in idpf_vport_rel() | |
| CVE-2026-23022 | idpf: fix memory leak in idpf_vc_core_deinit() | |
| CVE-2026-23021 | net: usb: pegasus: fix memory leak in update_eth_regs_async() | |
| CVE-2026-23020 | net: 3com: 3c59x: fix possible null dereference in vortex_probe1() | |
| CVE-2025-71189 | dmaengine: dw: dmamux: fix OF node leak on route allocation failure | |
| CVE-2026-23018 | btrfs: release path before initializing extent tree in btrfs_read_locked_inode() | |
| CVE-2026-23017 | idpf: fix error handling in the init_task on load | |
| CVE-2026-23016 | inet: frags: drop fraglist conntrack references | |
| CVE-2026-23015 | gpio: mpsse: fix reference leak in gpio_mpsse_probe() error paths | |
| CVE-2025-71183 | btrfs: always detect conflicting inodes when logging inode refs | |
| CVE-2025-71182 | can: j1939: make j1939_session_activate() fail if device is no longer registered | |
| CVE-2025-71181 | rust_binder: remove spin_lock() in rust_shrink_free_page() | |
| CVE-2025-71180 | counter: interrupt-cnt: Drop IRQF_NO_THREAD flag | |
| CVE-2026-23031 | can: gs_usb: gs_usb_receive_bulk_callback(): fix URB memory leak | |
| CVE-2026-23039 | drm/gud: fix NULL fb and crtc dereferences on USB disconnect |
Showing top 20 of 37 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf - CVE-2026-46238
batman-adv: stop caching unowned originator pointers in BAT - CVE-2026-46237
drm/amdgpu/vcn3: Avoid overflow on msg bound check
Same vendor: Linux
- CVE-2026-46241
spi: mpc52xx: fix use-after-free on registration failure - CVE-2026-46239
media: i2c: ov5647: Fix runtime PM refcount leak in s_ctrl - CVE-2026-46240
media: iris: Fix use-after-free in iris_release_internal_buf - CVE-2026-46238
batman-adv: stop caching unowned originator pointers in BAT - CVE-2026-46237
drm/amdgpu/vcn3: Avoid overflow on msg bound check
V. Comments for CVE-2025-71184
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