Описание
In the Linux kernel, the following vulnerability has been resolved:
crypto: algif_hash - Remove bogus SGL free on zero-length error path
When a zero-length message is hashed by algif_hash, and an error
is triggered, it tries to free an SG list that was never allocated
in the first place. Fix this by not freeing the SG list on the
zero-length error path.
A flaw was found in the Linux kernel's crypto subsystem. When processing zero-length messages in the hash algorithm interface (algif_hash), an error condition causes the kernel to attempt to free an unallocated scatter-gather list (SGL) buffer. A local attacker could exploit this vulnerability to trigger memory corruption, potentially leading to a system crash and Denial of Service (DoS).
Отчет
This vulnerability is rated as Low severity because successful exploitation requires local privileges to interact with user-space cryptographic interfaces and is limited to causing a denial of service via a kernel panic. Supported releases of Red Hat Enterprise Linux are unaffected, as the problematic error-handling code path was introduced in upstream kernel version 6.5 and is absent from RHEL kernel builds. On systems running newer upstream kernels where this code is present, the impact is confined to local system crashes without compromising confidentiality or integrity.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected | ||
| Red Hat Enterprise Linux 7 | kernel | Out of support scope | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Out of support scope | ||
| Red Hat Enterprise Linux 8 | kernel | Not affected | ||
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel | Not affected | ||
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected |
Показывать по
Дополнительная информация
Статус:
EPSS
4.4 Medium
CVSS3
Связанные уязвимости
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - Remove bogus SGL free on zero-length error path When a zero-length message is hashed by algif_hash, and an error is triggered, it tries to free an SG list that was never allocated in the first place. Fix this by not freeing the SG list on the zero-length error path.
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - Remove bogus SGL free on zero-length error path When a zero-length message is hashed by algif_hash, and an error is triggered, it tries to free an SG list that was never allocated in the first place. Fix this by not freeing the SG list on the zero-length error path.
In the Linux kernel, the following vulnerability has been resolved: c ...
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - Remove bogus SGL free on zero-length error path When a zero-length message is hashed by algif_hash, and an error is triggered, it tries to free an SG list that was never allocated in the first place. Fix this by not freeing the SG list on the zero-length error path.
Уязвимость компонента crypto ядра операционной системы Linux, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
4.4 Medium
CVSS3