PT-2023-9439 · Linux+1 · Linux Kernel+1

Michael Walle · CVE-2022-48895 · Published 2023-01-13 · Updated 2024-09-24

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.1.0-rc5-00088-gf3600ff8e322 #1930

Description The vulnerability is related to the iommu/arm-smmu component in the Linux kernel. It occurs when the system is shut down with the "reboot -f" command while a packet transmission is in flight, causing a kernel NULL pointer dereference. This can lead to a kernel panic and a fatal exception in interrupt. The issue is reproducible when the board has a fixed IP address and is ping flooded from another host.

Recommendations To resolve the issue, update the Linux kernel to a version that includes the fix for the iommu/arm-smmu vulnerability. Alternatively, boot with the "arm-smmu.disable bypass=0" option to allow unknown Stream IDs, but this may have security implications.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2024-07590

CVE-2022-48895

Affected Products

Linux Kernel

Red Os

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48895.json · Exploit
• https://git.kernel.org/stable/c/ce31e6ca68bd7639bd3e5ef97be215031842bbab · Patch
• https://cve.org/CVERecord?id=CVE-2022-48895 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48895 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-48895 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-48895 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-48895 · Security Note
• https://ubuntu.com/security/CVE-2022-48895 · Vendor Advisory
• https://git.kernel.org/stable/c/a1b9c7b1978aacf4b2f33e34bde1e2bb80b8497a · Patch
• https://osv.dev/vulnerability/CVE-2022-48895 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-07590 · Security Note
• https://redos.red-soft.ru/support/secure · Note
• https://lore.kernel.org/linux-cve-announce/2024082110-CVE-2022-48895-1370@gregkh · Note
• https://twitter.com/CVEnew/status/1826142269432270848 · Twitter Post
• https://redos.red-soft.ru/support/secure/uyazvimosti/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-kernel-lt-24-09-24-1 · Note