#VU104797 Integer underflow in Linux kernel - CVE-2022-49208

Vulnerability identifier: #VU104797

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-49208

CWE-ID: CWE-191

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to integer underflow within the irdma_sc_qp_create(), irdma_sc_cq_create(), irdma_sc_ceq_init() and irdma_sc_ccq_init() functions in drivers/infiniband/hw/irdma/ctrl.c. A local user can execute arbitrary code.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

---

External links
https://git.kernel.org/stable/c/6f6dbb819dfc1a35bcb8b709b5c83a3ea8beff75
https://git.kernel.org/stable/c/7340c3675d7ac946f4019b84cd7c64ed542dfe4c
https://git.kernel.org/stable/c/d52dab6e03550f9c97121b0c11c0a3ed78ee76a4
https://git.kernel.org/stable/c/f21056f15bbeacab7b4b87af232f5599d1f2bff1

---

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.