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CVE-2026-64383

Опубликовано: 26 июл. 2026
Источник: msrc
CVSS3: 7.5
EPSS Низкий

Описание

smb: client: fix double-free in SMB2_flush() replay

EPSS

Процентиль: 37%
0.00457
Низкий

7.5 High

CVSS3

Связанные уязвимости

CVSS3: 9.8
ubuntu
7 дней назад

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.

CVSS3: 7
redhat
7 дней назад

A flaw was found in the Linux kernel's Server Message Block (SMB) client. This vulnerability, a double-free error within the `SMB2_flush()` replay mechanism, occurs when the system attempts to free a memory buffer twice. A malicious SMB server could exploit this by sending a specially crafted flush response, potentially leading to memory corruption. This could result in a denial of service or, in some scenarios, arbitrary code execution.

CVSS3: 9.8
nvd
7 дней назад

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.

CVSS3: 9.8
debian
7 дней назад

In the Linux kernel, the following vulnerability has been resolved: s ...

CVSS3: 9.8
github
7 дней назад

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_flush() replay SMB2_flush() keeps its response buffer bookkeeping across replay attempts. If a replayable flush response is received and the retry then fails before cifs_send_recv() stores a replacement response, flush_exit will free the stale response pointer a second time. Reinitialize resp_buftype and rsp_iov at the top of the replay loop so cleanup only acts on response state produced by the current attempt. This fixes a double-free without changing replay handling for successful requests.

EPSS

Процентиль: 37%
0.00457
Низкий

7.5 High

CVSS3