Linux Kernel up to 5.18.1 information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.18.1. Affected by this vulnerability is an unknown functionality. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2022-49561. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.18.1. This affects an unknown functionality. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2022-49561 since 02/26/2025. The exploitability is told to be difficult. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 237099 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:01600-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.282, 4.19.246, 5.4.197, 5.10.120, 5.15.45, 5.17.13 or 5.18.2 eliminates this vulnerability. Applying the patch e97222b785e70e8973281666d709baad6523d8af/92a999d1963eed0df666284e20055136ceabd12f/b16bb373988da3ceb0308381634117e18b6ec60d/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3/01989d7eebb61c99bd4b88ebc8e261bd2f02caed/04f9e9104c969d8ce10a4a43634f641ed082092d/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0/56b14ecec97f39118bf85c9ac2438c5a949509ed is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (237099). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 237099
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:01600-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.14.282/4.19.246/5.4.197/5.10.120/5.15.45/5.17.13/5.18.2
Patch: e97222b785e70e8973281666d709baad6523d8af/92a999d1963eed0df666284e20055136ceabd12f/b16bb373988da3ceb0308381634117e18b6ec60d/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3/01989d7eebb61c99bd4b88ebc8e261bd2f02caed/04f9e9104c969d8ce10a4a43634f641ed082092d/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0/56b14ecec97f39118bf85c9ac2438c5a949509ed

Timelineinfo

02/26/2025 🔍
02/26/2025 +0 days 🔍
02/26/2025 +0 days 🔍
10/24/2025 +240 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-49561 (🔍)
GCVE (CVE): GCVE-0-2022-49561
GCVE (VulDB): GCVE-100-297165

Entryinfo

Created: 02/26/2025 10:37
Updated: 10/24/2025 19:12
Changes: 02/26/2025 10:37 (57), 05/23/2025 07:15 (2), 10/24/2025 19:12 (12)
Complete: 🔍
Cache ID: 216::103

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