In the Linux kernel, the following vulnerability has been resolved:
counter: rz-mtu3-cnt: prevent counter from being toggled multiple times
Runtime PM counter is incremented / decremented each time the sysfs
enable file is written to.
If user writes 0 to the sysfs enable file multiple times, runtime PM
usage count underflows, generating the following message.
rz-mtu3-counter rz-mtu3-counter.0: Runtime PM usage count underflow!
At the same time, hardware registers end up being accessed with clocks
off in rz_mtu3_terminate_counter() to disable an already disabled
channel.
If user writes 1 to the sysfs enable file multiple times, runtime PM
usage count will be incremented each time, requiring the same number of
0 writes to get it back to 0.
If user writes 0 to the sysfs enable file while PWM is in progress, PWM
is stopped without counter being the owner of the underlying MTU3
channel.
Check against the cached count_is_enabled value and exit if the user
is trying to set the same enable value.
References
Configurations
Configuration 1 (hide)
|
History
07 May 2026, 19:55
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CWE | NVD-CWE-Other | |
| References | () https://git.kernel.org/stable/c/67c3f99bed6f422ba343d2b70a2eeeccdfd91bef - Patch | |
| References | () https://git.kernel.org/stable/c/885aa739a07ab45e90dfa997205acec97979ce4e - Patch | |
| References | () https://git.kernel.org/stable/c/ced8b48420eddb1251f93c22dc23fa136490b3cd - Patch | |
| References | () https://git.kernel.org/stable/c/e07237df8538b0ae98dce112e4f6db093d767f80 - Patch | |
| References | () https://git.kernel.org/stable/c/f5f6f06d7e6d262026578b59ba7426eb04acce5d - Patch |
01 May 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-01 15:16
Updated : 2026-05-07 19:55
NVD link : CVE-2026-31741
Mitre link : CVE-2026-31741
CVE.ORG link : CVE-2026-31741
JSON object : View
Products Affected
linux
- linux_kernel
CWE