CVE-2024-26993
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
fs: sysfs: Fix reference leak in sysfs_break_active_protection()
The sysfs_break_active_protection() routine has an obvious reference
leak in its error path. If the call to kernfs_find_and_get() fails then
kn will be NULL, so the companion sysfs_unbreak_active_protection()
routine won't get called (and would only cause an access violation by
trying to dereference kn->parent if it was called). As a result, the
reference to kobj acquired at the start of the function will never be
released.
Fix the leak by adding an explicit kobject_put() call when kn is NULL.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fs: sysfs: corrige la fuga de referencia en sysfs_break_active_protection() La rutina sysfs_break_active_protection() tiene una fuga de referencia obvia en su ruta de error. Si la llamada a kernfs_find_and_get() falla, entonces kn será NULL, por lo que no se llamará a la rutina complementaria sysfs_unbreak_active_protection() (y solo causaría una infracción de acceso al intentar eliminar la referencia a kn->parent si se llamara). Como resultado, la referencia a kobj adquirida al inicio de la función nunca se publicará. Solucione la fuga agregando una llamada explícita a kobject_put() cuando kn sea NULL.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-19 CVE Reserved
- 2024-05-01 CVE Published
- 2024-05-03 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (19)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-26993 | 2024-09-24 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2278314 | 2024-09-24 |
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 < 4.19.313 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 4.19.313" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 5.4.275 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 5.4.275" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 5.10.216 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 5.10.216" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 5.15.157 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 5.15.157" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 6.1.88 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 6.1.88" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 6.6.29 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 6.6.29" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 6.8.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 6.8.8" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 4.19 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.19 < 6.9" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.16.62 Search vendor "Linux" for product "Linux Kernel" and version "3.16.62" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.18.121 Search vendor "Linux" for product "Linux Kernel" and version "3.18.121" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.4.154 Search vendor "Linux" for product "Linux Kernel" and version "4.4.154" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.9.125 Search vendor "Linux" for product "Linux Kernel" and version "4.9.125" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.14.68 Search vendor "Linux" for product "Linux Kernel" and version "4.14.68" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.18.6 Search vendor "Linux" for product "Linux Kernel" and version "4.18.6" | en |
Affected
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