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CVE-2026-99067— btrfs: scrub: fix local_root reference leak in scrub_print_warning_inode()

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.

在 Linux 内核中，以下漏洞已得到修复： btrfs: scrub：修复 scrub_print_warning_inode() 中 local_root 的引用泄漏问题 当 paths_from_inode() 失败时，scrub_print_warning_inode() 会跳转到 err 标签，但并未释放由 btrfs_get_fs_root() 获取的引用，导致每次在打印 scrub 警告期间路径解析失败时，都会泄漏一个对根节点的引用。该函数的其他所有错误处理路径和成功路径均会正确释放该引用。 现已在

EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 558540c17771eaf89b1a3be39aa2c8bc837da1a6< 41cabfbf3532e2a2a17be9e4876042a5393b5c8d affected
558540c17771eaf89b1a3be39aa2c8bc837da1a6< 452a435b74f7f598a343c51f7c89c5d2244384b6 affected
558540c17771eaf89b1a3be39aa2c8bc837da1a6< 12ba7d8b9cd45a2c6aa8f37c3f4b8a50422fb549 affected
558540c17771eaf89b1a3be39aa2c8bc837da1a6< a7e5992bc37088f9b00e531955022aef69de3dc7 affected
558540c17771eaf89b1a3be39aa2c8bc837da1a6< 1fd742c7479961da6d0bb794ef8ac6b7b9442847 affected
3.2 affected
< 3.2 unaffected
6.6.160≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-99067

Vulnerability Information
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Vulnerability Title
btrfs: scrub: fix local_root reference leak in scrub_print_warning_inode()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: scrub: fix local_root reference leak in scrub_print_warning_inode() When paths_from_inode() fails, scrub_print_warning_inode() jumps to err without dropping the reference taken by btrfs_get_fs_root(), leaking a reference to the root every time path resolution fails while printing scrub warnings. Every other error and success path of the function drops the reference. Drop the reference on the paths_from_inode() failure path too.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 558540c17771eaf89b1a3be39aa2c8bc837da1a6 ~ 41cabfbf3532e2a2a17be9e4876042a5393b5c8d -
Linux Linux 3.2 -

II. Public POCs for CVE-2026-99067

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III. Intelligence Information for CVE-2026-99067

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Patches & Fixes for CVE-2026-99067 (3)

Same Patch Batch · Linux · 2026-10-23 · 217 CVEs total

CVE-2026-98959 9.8 CRITICAL btrfs: fix xattr replace when multiple xattrs are packed in the same item
CVE-2026-99078 9.8 CRITICAL net/mlx5e: Prevent stale XSK buffer release on MPWQE refill retry
CVE-2026-99079 9.8 CRITICAL net/mlx5e: Prevent stale XSK buffer release on refill retry
CVE-2026-98988 8.8 HIGH namespace: keep covered mounts covered in OPEN_TREE_NAMESPACE
CVE-2026-99083 8.8 HIGH ksmbd: fix heap out-of-bounds write in krb5_authenticate()
CVE-2026-99082 8.8 HIGH KVM: x86: Use active memslots for the per-vCPU MMIO cache
CVE-2026-98981 8.8 HIGH namespace: unhash a dentry before detaching the mounts on it
CVE-2026-98980 8.8 HIGH namei: don't reveal overmounted entries in refwalk
CVE-2026-98870 8.8 HIGH ksmbd: remove stale channels from all sessions on teardown
CVE-2026-99042 8.4 HIGH io_uring/net: populate CONNECT filter fields for 24-byte sockaddr_in6
CVE-2026-98978 8.4 HIGH namespace: never expire a locked mount
CVE-2026-99064 8.1 HIGH cipso: adjust cached option offsets when removing CIPSO
CVE-2026-98968 8.1 HIGH amt: send the relay's General Query directly from the receive path
CVE-2026-99016 7.8 HIGH riscv: futex: untag the user pointer before the atomic access
CVE-2026-98999 7.8 HIGH drm/xe: Fix stale pinned_link entry when fb-pin performs the final unpin
CVE-2026-99054 7.8 HIGH tipc: destroy topsrv workqueues before closing connections
CVE-2026-99014 7.8 HIGH Bluetooth: hci_sync: Fix command skb lifetime during scan setup
CVE-2026-99053 7.8 HIGH tipc: hold a reference to nodes found by link name
CVE-2026-98945 7.8 HIGH HID: steam: Rearrange teardown sequence
CVE-2026-99051 7.8 HIGH fsverity: RCU-delay the freeing of struct fsverity_info

Showing top 20 of 217 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux