CVE-2022-50048

netfilter: nf_tables: possible module reference underflow in error path

MEDIUM
5.5
CVSS Score
Published: June 18, 2025 at 11:01 AM UTC
Updated: August 5, 2026 at 09:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: possible module reference underflow in error path dst->ops is set on when nft_expr_clone() fails, but module refcount has not been bumped yet, therefore nft_expr_destroy() leads to module reference underflow.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.11 ≤ v < 5.15.635.11 ≤ v < 5.19.45.11 ≤ v < 6.05.16 ≤ v < 5.19.46.0 rc18cfd9b0f8515e7c361bba27e2a2684cbd427fe01
Vendor states this is fixed in 1e52e6cfec6342c3d0df47dc3a76724fb3dabf56 (fixed)
Vendor states this is fixed in b59bee8b05b0e789b5a298cacb09e8aaa3367a29 (fixed)
Vendor states this is fixed in c485c35ff6783ccd12c160fcac6a0e504e83e0bf (fixed)
Vendor states this is fixed in 5.11 (unaffected)
Vendor states this is fixed in 5.15.63 (unaffected)
Vendor states this is fixed in 5.19.4 (unaffected)
Vendor states this is fixed in 6.0 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1e52e6cfec6342c3d0df47dc3a76724fb3dabf56
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b59bee8b05b0e789b5a298cacb09e8aaa3367a29
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c485c35ff6783ccd12c160fcac6a0e504e83e0bf

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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