CVE-2024-50127
net: sched: fix use-after-free in taprio_change()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix use-after-free in taprio_change()
In 'taprio_change()', 'admin' pointer may become dangling due to sched
switch / removal caused by 'advance_sched()', and critical section
protected by 'q->current_entry_lock' is too small to prevent from such
a scenario (which causes use-after-free detected by KASAN). Fix this
by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update
'admin' immediately before an attempt to schedule freeing.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: sched: arreglado use-after-free en taprio_change(). En 'taprio_change()', el puntero 'admin' puede quedar colgando debido al cambio/eliminación de sched causado por 'advance_sched()', y la sección crítica protegida por 'q->current_entry_lock' es demasiado pequeña para evitar tal escenario (que causa el use-after-free detectado por KASAN). Solucione esto al preferir 'rcu_replace_pointer()' sobre 'rcu_assign_pointer()' para actualizar 'admin' inmediatamente antes de un intento de liberación de programación.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-11-05 CVE Published
- 2024-11-05 CVE Updated
- 2024-11-06 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (6)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/a3d43c0d56f1b94e74963a2fbadfb70126d92213 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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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" | >= 5.2 < 5.15.170 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.15.170" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 6.1.115 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 6.1.115" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 6.6.59 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 6.6.59" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 6.11.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 6.11.6" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 6.12-rc5 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 6.12-rc5" | en |
Affected
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