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CVE-2022-49919— netfilter: nf_tables: release flow rule object from commit path

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nf_tables未及时释放流规则对象，可能导致内存泄漏。

CVSS 7.8 · High EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery

Affected Version Matrix 19

VendorProduct Version RangeStatus
Linux Linux 5b8d63489c3b701eb2a76f848ec94d8cbc9373b9< 74fd5839467054cd9c4d050614d3ee8788386171 affected
330c0c6cd2150a2d7f47af16aa590078b0d2f736< b2d7a92aff0fbd93c29d2aa6451fb99f050e2c4e affected
e33d9bd563e71f6c6528b96008d65524a459c4dc< 6044791b7be707fd0e709f26e961a446424e5051 affected
9dd732e0bdf538b1b76dc7c157e2b5e560ff30d3< 4ab6f96444e936f5e4a936d5c0bc948144bcded3 affected
9dd732e0bdf538b1b76dc7c157e2b5e560ff30d3< 26b5934ff4194e13196bedcba373cd4915071d0e affected
80de9ea1f5b808a6601e91111fae601df2b26369 affected
ab9f34a30c23f656e76f4c5b83125a4e7b53c86e affected
5.4.198< 5.4.224 affected
… +11 more rows
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I. Basic Information for CVE-2022-49919

Vulnerability Information
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Vulnerability Title
netfilter: nf_tables: release flow rule object from commit path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: release flow rule object from commit path No need to postpone this to the commit release path, since no packets are walking over this object, this is accessed from control plane only. This helped uncovered UAF triggered by races with the netlink notifier.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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nf_tables未及时释放流规则对象，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 5b8d63489c3b701eb2a76f848ec94d8cbc9373b9 ~ 74fd5839467054cd9c4d050614d3ee8788386171 -
Linux Linux 5.19 -

II. Public POCs for CVE-2022-49919

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III. Intelligence Information for CVE-2022-49919

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Patches & Fixes for CVE-2022-49919 (5)

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-2025-37765 7.8 HIGH drm/nouveau: prime: fix ttm_bo_delayed_delete oops
CVE-2022-49905 7.8 HIGH net/smc: Fix possible leaked pernet namespace in smc_init()
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-2022-49921 7.8 HIGH net: sched: Fix use after free in red_enqueue()
CVE-2025-37752 7.8 HIGH net_sched: sch_sfq: move the limit validation
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-2025-23141 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-2022-49919

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