Linux Kernel up to 6.8.1 aoecmd_cfg_pkts use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.8.1. The impacted element is the function aoecmd_cfg_pkts. Such manipulation leads to use after free. This vulnerability is referenced as CVE-2024-26898. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.8.1. Affected by this issue is the function aoecmd_cfg_pkts. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts This patch is against CVE-2023-6270. The description of cve is: A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution. In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial code is finished. But the net_device ifp will still be used in later tx()->dev_queue_xmit() in kthread. Which means that the dev_put(ifp) should NOT be called in the success path of skb initial code in aoecmd_cfg_pkts(). Otherwise tx() may run into use-after-free because the net_device is freed. This patch removed the dev_put(ifp) in the success path in aoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2024-26898 since 02/19/2024. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/03/2024).

The vulnerability scanner Nessus provides a plugin with the ID 212019 (Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2024-12851)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.311, 5.4.273, 5.10.214, 5.15.153, 6.1.83, 6.6.23, 6.7.11, 6.8.2 or 6.9-rc1 eliminates this vulnerability. Applying the patch ad80c34944d7/1a54aa506b3b/faf0b4c5e00b/7dd09fa80b07/74ca3ef68d2f/eb48680b0255/079cba4f4e30/a16fbb800646/f98364e92662 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 (212019). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 212019
Nessus Name: Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2024-12851)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.311/5.4.273/5.10.214/5.15.153/6.1.83/6.6.23/6.7.11/6.8.2/6.9-rc1
Patch: ad80c34944d7/1a54aa506b3b/faf0b4c5e00b/7dd09fa80b07/74ca3ef68d2f/eb48680b0255/079cba4f4e30/a16fbb800646/f98364e92662

Timelineinfo

02/19/2024 🔍
04/17/2024 +57 days 🔍
04/17/2024 +0 days 🔍
12/03/2024 +230 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-26898 (🔍)
GCVE (CVE): GCVE-0-2024-26898
GCVE (VulDB): GCVE-100-261290

Entryinfo

Created: 04/17/2024 13:26
Updated: 12/03/2024 15:52
Changes: 04/17/2024 13:26 (57), 05/24/2024 08:42 (11), 06/28/2024 13:59 (1), 12/03/2024 15:52 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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