Linux Kernel Timer net/rose/rose_timer.c use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel. Impacted is the function rose_heartbeat_expiry/rose_timer_expiry/rose_idletimer_expiry of the file net/rose/rose_timer.c of the component Timer. Executing a manipulation can lead to use after free. This vulnerability is handled as CVE-2022-2318. The attack can be executed remotely. Additionally, an exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability has been found in Linux Kernel (Operating System) (affected version not known) and classified as critical. This vulnerability affects the function rose_heartbeat_expiry/rose_timer_expiry/rose_idletimer_expiry of the file net/rose/rose_timer.c of the component Timer. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

There are use-after-free vulnerabilities caused by timer handler in net/rose/rose_timer.c of linux that allow attackers to crash linux kernel without any privileges.

The weakness was released 07/07/2022 as 9cc02ede696272c5271a401e4f27c262359bc2f6. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-2318 since 07/05/2022. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k.

Applying the patch 9cc02ede696272c5271a401e4f27c262359bc2f6 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2022-34588). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 6.7

VulDB Base Score: 8.8
VulDB Temp Score: 7.9
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 9cc02ede696272c5271a401e4f27c262359bc2f6

Timelineinfo

07/05/2022 🔍
07/07/2022 +2 days 🔍
07/07/2022 +0 days 🔍
05/25/2026 +1418 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 9cc02ede696272c5271a401e4f27c262359bc2f6
Status: Confirmed

CVE: CVE-2022-2318 (🔍)
GCVE (CVE): GCVE-0-2022-2318
GCVE (VulDB): GCVE-100-203296
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/07/2022 08:34
Updated: 05/25/2026 14:56
Changes: 07/07/2022 08:34 (47), 07/19/2022 14:46 (18), 05/25/2026 14:56 (15)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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