Linux Kernel up to 5.16.12 nf_queue sock_hold use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 5.16.12. This issue affects the function sock_hold of the component nf_queue. This manipulation causes use after free. This vulnerability is handled as CVE-2022-48911. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.16.12 and classified as critical. Affected by this vulnerability is the function sock_hold of the component nf_queue. 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. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: fix possible use-after-free Eric Dumazet says: The sock_hold() side seems suspect, because there is no guarantee that sk_refcnt is not already 0. On failure, we cannot queue the packet and need to indicate an error. The packet will be dropped by the caller. v2: split skb prefetch hunk into separate change

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2022-48911 since 08/21/2024. The exploitation appears to be difficult. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/11/2024).

The vulnerability scanner Nessus provides a plugin with the ID 208672 (SUSE SLES12 Security Update : kernel (SUSE-SU-2024:3566-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.9.305, 4.14.270, 4.19.233, 5.4.183, 5.10.104, 5.15.27 or 5.16.13 eliminates this vulnerability. Applying the patch 21b27b2baa27/ef97921ccdc2/34dc4a6a7f26/43c25da41e30/4d05239203fa/dd648bd1b33a/dcc3cb920bf7/c3873070247d 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 (208672). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.1
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: 208672
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2024:3566-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.9.305/4.14.270/4.19.233/5.4.183/5.10.104/5.15.27/5.16.13
Patch: 21b27b2baa27/ef97921ccdc2/34dc4a6a7f26/43c25da41e30/4d05239203fa/dd648bd1b33a/dcc3cb920bf7/c3873070247d

Timelineinfo

08/21/2024 🔍
08/22/2024 +1 days 🔍
08/22/2024 +0 days 🔍
10/11/2024 +50 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2022-48911 (🔍)
GCVE (CVE): GCVE-0-2022-48911
GCVE (VulDB): GCVE-100-275521

Entryinfo

Created: 08/22/2024 07:47
Updated: 10/11/2024 03:49
Changes: 08/22/2024 07:47 (59), 08/23/2024 09:22 (1), 09/13/2024 05:30 (11), 10/11/2024 03:49 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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