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CVE-2024-27054

s390/dasd: fix double module refcount decrement

MEDIUM
5.5
CVSS Score
Published: May 1, 2024 at 12:54 PM UTC
Updated: June 17, 2026 at 07:19 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fix double module refcount decrement Once the discipline is associated with the device, deleting the device takes care of decrementing the module's refcount. Doing it manually on this error path causes refcount to artificially decrease on each error while it should just stay the same.

Affected

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

Linux Kernel· Linux
95%
4.9 ≤ v < 5.10.2374.9 ≤ v < 5.15.1534.9 ≤ v < 6.1.834.9 ≤ v < 6.6.234.9 ≤ v < 6.7.114.9 ≤ v < 6.8.24.9 ≤ v < 6.95.16 ≤ v < 6.1.836.2 ≤ v < 6.6.236.7 ≤ v < 6.7.116.8 ≤ v < 6.8.24.9c020d722b110a44c613ef71e657e6dd4116e09d9
Vendor states this is fixed in 9fe0562179d8fa960afca0eaed6d4ba4122a3cc6 (fixed)
Vendor states this is fixed in ad999aa18103fa038787b6a8a55020abcf34df1a (fixed)
Vendor states this is fixed in c3116e62ddeff79cae342147753ce596f01fcf06 (fixed)
Vendor states this is fixed in ebc5a3bd79e54f98c885c26f0862a27a02c487c5 (fixed)
Vendor states this is fixed in ec09bcab32fc4765e0cc97e1b72cdd067135f37e (fixed)
Vendor states this is fixed in edbdb0d94143db46edd373cc93e433832d29fe19 (fixed)
Vendor states this is fixed in fa18aa507ea71d8914b6acb2c94db311c757c650 (fixed)
Vendor states this is fixed in 4.9 (unaffected)
Vendor states this is fixed in 5.10.237 (unaffected)
Vendor states this is fixed in 5.15.153 (unaffected)
Vendor states this is fixed in 6.1.83 (unaffected)
Vendor states this is fixed in 6.6.23 (unaffected)
Vendor states this is fixed in 6.7.11 (unaffected)
Vendor states this is fixed in 6.8.2 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

References (7)

Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9fe0562179d8fa960afca0eaed6d4ba4122a3cc6
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ad999aa18103fa038787b6a8a55020abcf34df1a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c3116e62ddeff79cae342147753ce596f01fcf06
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ebc5a3bd79e54f98c885c26f0862a27a02c487c5
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ec09bcab32fc4765e0cc97e1b72cdd067135f37e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/edbdb0d94143db46edd373cc93e433832d29fe19
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fa18aa507ea71d8914b6acb2c94db311c757c650

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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