CVE-2021-47176

s390/dasd: add missing discipline function

MEDIUM
5.5
CVSS Score
Published: March 25, 2024 at 09:16 AM UTC
Updated: June 17, 2026 at 04:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: add missing discipline function Fix crash with illegal operation exception in dasd_device_tasklet. Commit b72949328869 ("s390/dasd: Prepare for additional path event handling") renamed the verify_path function for ECKD but not for FBA and DIAG. This leads to a panic when the path verification function is called for a FBA or DIAG device. Fix by defining a wrapper function for dasd_generic_verify_path().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.10.173 ≤ v < 5.10.1755.11 ≤ v < 5.12.95.11 ≤ v < 5.135.4.235 ≤ v < 5.4.2375.10.1735.13 rc15.13 rc25.13 rc35.4.23572aebdac390bf0dc04c0385d2db7ee522f4ffa3c8bc5a76268fb334236296b4c185b8337e0d85473b72949328869dfd45f6452c2410647afd7db5f1a
Vendor states this is fixed in 6a16810068e70959bc1df686424aa35ce05578f1 (fixed)
Vendor states this is fixed in a16be88a3d7e5efcb59a15edea87a8bd369630c6 (fixed)
Vendor states this is fixed in aa8579bc084673c651204f7cd0d6308a47dffc16 (fixed)
Vendor states this is fixed in c0c8a8397fa8a74d04915f4d3d28cb4a5d401427 (fixed)
Vendor states this is fixed in 5.10.175 (unaffected)
Vendor states this is fixed in 5.11 (unaffected)
Vendor states this is fixed in 5.12.9 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)
Vendor states this is fixed in 5.4.237 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6a16810068e70959bc1df686424aa35ce05578f1
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a16be88a3d7e5efcb59a15edea87a8bd369630c6
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/aa8579bc084673c651204f7cd0d6308a47dffc16
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c0c8a8397fa8a74d04915f4d3d28cb4a5d401427

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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