SECUFOCUSNOW
Home›CVE index›CVE-2024-50063
Review reviewHigh

CVE-2024-50063

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

In the Linux kernel, the following vulnerability has been resolved: bpf: Prevent tail call between progs attached to different hooks bpf progs can be attached to kernel functions, and the attached functions can take different parameters or return different return values. If prog attached to one kernel function tail calls prog attached to another kernel function, the ctx access or return value verification could be bypassed. For example, if prog1 is attached to func1 which takes only 1 parameter and prog2 is attached to func2 which takes two parameters. Since verifier assumes the bpf ctx pas...

CVSS
7.8
EPSS
0.23%
14.2% percentile
CISA KEV
Not listed
Published
2024.10.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.23%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: bpf: Prevent tail call between progs attached to different hooks bpf progs can be attached to kernel functions, and the attached functions can take different parameters or return different return values. If prog attached to one kernel function tail calls prog attached to another kernel function, the ctx access or return value verification could be bypassed. For example, if prog1 is attached to func1 which takes only 1 parameter and prog2 is attached to func2 which takes two parameters. Since verifier assumes the bpf ctx pas...

Affected product and versions

Product
Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Affected versions
>= f1b9509c2fb0ef4db8d22dac9aef8e856a5d81f6 < d9a807fb7cbfad4328824186e2e4bee28f72169b, >= f1b9509c2fb0ef4db8d22dac9aef8e856a5d81f6 < 5d5e3b4cbe8ee16b7bf96fd73a421c92a9da3ca1, >= f1b9509c2fb0ef4db8d22dac9aef8e856a5d81f6 < 88c2a10e6c176c2860cd0659f4c0e9d20b3f64d1, >= f1b9509c2fb0ef4db8d22dac9aef8e856a5d81f6 < 28ead3eaabc16ecc907cfb71876da028080f6356, >= 5.5, >= V3.1.6, 11.0, >= 5.5 < 6.1.135, >= 6.2 < 6.6.57, >= 6.7 < 6.11.4
Fixed versions
6.1.135, 6.6.57, 6.11.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 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
Not available