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Review reviewHigh

CVE-2024-36978

Linux Linux, RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family

In the Linux kernel, the following vulnerability has been resolved: net: sched: sch_multiq: fix possible OOB write in multiq_tune() q->bands will be assigned to qopt->bands to execute subsequent code logic after kmalloc. So the old q->bands should not be used in kmalloc. Otherwise, an out-of-bounds write will occur.

CVSS
7.8
EPSS
0.28%
20.5% percentile
CISA KEV
Not listed
Published
2024.06.19
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.28%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: sched: sch_multiq: fix possible OOB write in multiq_tune() q->bands will be assigned to qopt->bands to execute subsequent code logic after kmalloc. So the old q->bands should not be used in kmalloc. Otherwise, an out-of-bounds write will occur.

Affected product and versions

Product
Linux Linux, RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
Affected versions
>= c2999f7fb05b87da4060e38150c70fa46794d82b < d5d9d241786f49ae7cbc08e7fc95a115e9d80f3d, >= c2999f7fb05b87da4060e38150c70fa46794d82b < 52b1aa07cda6a199cd6754d3798c7759023bc70f, >= c2999f7fb05b87da4060e38150c70fa46794d82b < 598572c64287aee0b75bbba4e2881496878860f3, >= c2999f7fb05b87da4060e38150c70fa46794d82b < 0f208fad86631e005754606c3ec80c0d44a11882, >= c2999f7fb05b87da4060e38150c70fa46794d82b < 54c2c171c11a798fe887b3ff72922aa9d1411c1e, >= c2999f7fb05b87da4060e38150c70fa46794d82b < d6fb5110e8722bc00748f22caeb650fe4672f129, >= c2999f7fb05b87da4060e38150c70fa46794d82b < affc18fdc694190ca7575b9a86632a73b9fe043d, >= 5.4, < V3.1, >= 5.4 < 5.4.279, >= 5.5 < 5.10.221, >= 5.11 < 5.15.162, >= 5.16 < 6.1.95, >= 6.2 < 6.6.35, >= 6.7 < 6.9.6, 6.10
Fixed versions
5.4.279, 5.10.221, 5.15.162, 6.1.95, 6.6.35, 6.9.6

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, RUGGEDCOM RST2428P, SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family 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-787