Memory leak in Linux kernel hw qib driver

1) Memory leak

EUVDB-ID: #VU91614

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-36947

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the remove_device_files() function in drivers/infiniband/hw/qib/qib_fs.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.15 - 6.8.9

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:5.15:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:5.15.1:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/24dd9b08df718f20ccf2dd1519909fefd8c233ee
https://git.kernel.org/stable/c/bd8f78c71defbcb7a9ed331e7f287507df972b00
https://git.kernel.org/stable/c/db71ca93259dd1078bcfea3afafde2143cfc2da7
https://git.kernel.org/stable/c/02ee394a5d899d9bd2f0759382e9481cab6166f8
https://git.kernel.org/stable/c/aa23317d0268b309bb3f0801ddd0d61813ff5afb
https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.159
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.91
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.31
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.10

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.