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CVE-2022-49912— btrfs: fix ulist leaks in error paths of qgroup self tests

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btrfs qgroup自测试错误路径中ulist泄漏，可能导致内存泄漏。

AI Predicted 3.7 Difficulty: Trivial EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 442244c9633292a147ab2b29e7007a7c8a3909b2< d81370396025cf63a7a1b5f8bb25a3479203b2ca affected
442244c9633292a147ab2b29e7007a7c8a3909b2< 3f58283d83a588ff5da62fc150de19e798ed2ec2 affected
442244c9633292a147ab2b29e7007a7c8a3909b2< 203204798831c35d855ecc6417d98267d2d2184b affected
442244c9633292a147ab2b29e7007a7c8a3909b2< 5d1a47ebf84540e40b5b43fc21aef0d6c0f627d9 affected
442244c9633292a147ab2b29e7007a7c8a3909b2< 0a0dead4ad1a2e2a9bdf133ef45111d7c8daef84 affected
442244c9633292a147ab2b29e7007a7c8a3909b2< f46ea5fa3320dca4fe0c0926b49a5f14cb85de62 affected
442244c9633292a147ab2b29e7007a7c8a3909b2< da7003434bcab0ae9aba3f2c003e734cae093326 affected
442244c9633292a147ab2b29e7007a7c8a3909b2< d37de92b38932d40e4a251e876cc388f9aee5f42 affected
… +10 more rows
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I. Basic Information for CVE-2022-49912

Vulnerability Information
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Vulnerability Title
btrfs: fix ulist leaks in error paths of qgroup self tests
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix ulist leaks in error paths of qgroup self tests In the test_no_shared_qgroup() and test_multiple_refs() qgroup self tests, if we fail to add the tree ref, remove the extent item or remove the extent ref, we are returning from the test function without freeing the "old_roots" ulist that was allocated by the previous calls to btrfs_find_all_roots(). Fix that by calling ulist_free() before returning.
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btrfs qgroup自测试错误路径中ulist泄漏，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 442244c9633292a147ab2b29e7007a7c8a3909b2 ~ d81370396025cf63a7a1b5f8bb25a3479203b2ca -
Linux Linux 4.2 -

II. Public POCs for CVE-2022-49912

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III. Intelligence Information for CVE-2022-49912

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Patches & Fixes for CVE-2022-49912 (8)

Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total

CVE-2025-37750 9.8 CRITICAL smb: client: fix UAF in decryption with multichannel
CVE-2025-37778 9.8 CRITICAL ksmbd: Fix dangling pointer in krb_authenticate
CVE-2022-49770 9.8 CRITICAL ceph: avoid putting the realm twice when decoding snaps fails
CVE-2022-49931 8.8 HIGH IB/hfi1: Correctly move list in sc_disable()
CVE-2025-37776 8.8 HIGH ksmbd: fix use-after-free in smb_break_all_levII_oplock()
CVE-2025-37777 8.8 HIGH ksmbd: fix use-after-free in __smb2_lease_break_noti()
CVE-2025-37790 8.8 HIGH net: mctp: Set SOCK_RCU_FREE
CVE-2022-49910 8.8 HIGH Bluetooth: L2CAP: Fix use-after-free caused by l2cap_reassemble_sdu
CVE-2022-49886 8.4 HIGH x86/tdx: Panic on bad configs that #VE on "private" memory access
CVE-2025-23159 8.4 HIGH media: venus: hfi: add a check to handle OOB in sfr region
CVE-2025-37749 8.2 HIGH net: ppp: Add bound checking for skb data on ppp_sync_txmung
CVE-2025-37774 7.8 HIGH slab: ensure slab->obj_exts is clear in a newly allocated slab page
CVE-2025-37789 7.8 HIGH net: openvswitch: fix nested key length validation in the set() action
CVE-2025-37779 7.8 HIGH lib/iov_iter: fix to increase non slab folio refcount
CVE-2022-49920 7.8 HIGH netfilter: nf_tables: netlink notifier might race to release objects
CVE-2022-49919 7.8 HIGH netfilter: nf_tables: release flow rule object from commit path
CVE-2025-37756 7.8 HIGH net: tls: explicitly disallow disconnect
CVE-2025-37761 7.8 HIGH drm/xe: Fix an out-of-bounds shift when invalidating TLB
CVE-2025-37763 7.8 HIGH drm/imagination: take paired job reference
CVE-2025-23141 7.8 HIGH KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2022-49912

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