CVE-2024-38618
ALSA: timer: Set lower bound of start tick time
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
ALSA: timer: Set lower bound of start tick time
Currently ALSA timer doesn't have the lower limit of the start tick
time, and it allows a very small size, e.g. 1 tick with 1ns resolution
for hrtimer. Such a situation may lead to an unexpected RCU stall,
where the callback repeatedly queuing the expire update, as reported
by fuzzer.
This patch introduces a sanity check of the timer start tick time, so
that the system returns an error when a too small start size is set.
As of this patch, the lower limit is hard-coded to 100us, which is
small enough but can still work somehow.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: temporizador: establece el límite inferior del tiempo de inicio. Actualmente, el temporizador ALSA no tiene el límite inferior del tiempo de inicio y permite un tamaño muy pequeño, por ejemplo, 1 tic. con resolución de 1ns para hrtimer. Tal situación puede provocar una parada inesperada de la RCU, donde la devolución de llamada pone en cola repetidamente la actualización caducada, según lo informado por fuzzer. Este parche introduce una verificación de cordura del tiempo de inicio del temporizador, de modo que el sistema devuelve un error cuando se establece un tamaño de inicio demasiado pequeño. A partir de este parche, el límite inferior está codificado en 100us, que es bastante pequeño pero aún puede funcionar de alguna manera.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-06-18 CVE Reserved
- 2024-06-19 CVE Published
- 2024-06-20 EPSS Updated
- 2024-11-08 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 4.19.316 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.316" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.4.278 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.278" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.10.219 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.219" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 5.15.161 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.161" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.1.93 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.93" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.6.33 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.33" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.9.3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.9.3" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.10 Search vendor "Linux" for product "Linux Kernel" and version " < 6.10" | en |
Affected
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