SECUFOCUSNOW
Home›CVE index›CVE-2024-44951
Review reviewHigh

CVE-2024-44951

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: serial: sc16is7xx: fix TX fifo corruption Sometimes, when a packet is received on channel A at almost the same time as a packet is about to be transmitted on channel B, we observe with a logic analyzer that the received packet on channel A is transmitted on channel B. In other words, the Tx buffer data on channel B is corrupted with data from channel A. The problem appeared since commit 4409df5866b7 ("serial: sc16is7xx: change EFR lock to operate on each channels"), which changed the EFR locking to operate on each channel i...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.09.05
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: serial: sc16is7xx: fix TX fifo corruption Sometimes, when a packet is received on channel A at almost the same time as a packet is about to be transmitted on channel B, we observe with a logic analyzer that the received packet on channel A is transmitted on channel B. In other words, the Tx buffer data on channel B is corrupted with data from channel A. The problem appeared since commit 4409df5866b7 ("serial: sc16is7xx: change EFR lock to operate on each channels"), which changed the EFR locking to operate on each channel i...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 4409df5866b7ff7686ba27e449ca97a92ee063c9 < 09cfe05e9907f3276887a20e267cc40e202f4fdd, >= 4409df5866b7ff7686ba27e449ca97a92ee063c9 < 133f4c00b8b2bfcacead9b81e7e8edfceb4b06c4, >= 4b068e55bf5ea7bab4d8a282c6a24b03e80c0b68, >= 9879e1bec3c0f077427dd0d258c80c63ce9babdf, >= dbe196ca489f3833e0f9eeb86ac346194f131c91, >= 6.1.76 < 6.2, >= 6.6.15 < 6.7, >= 6.7.3 < 6.8, >= 6.8, >= 6.8 < 6.10.5, 6.11
Fixed versions
6.2, 6.7, 6.8, 6.10.5

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-667