Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from cachefilessetvolumexattr not properly using the actual length of the volume consistency data, which could le...

The vulnerability of the `cachefiles_ondemand_clean_object()` function (fs/cachefiles/ondemand.c) in the Linux kernel allows a malicious actor to exploit their privileges.

The vulnerability of the cachefilesondemandcleanobject function fs/cachefiles/ondemand.c in the Linux kernel is related to the use of memory after it is freed. Exploiting this vulnerability can allow an attacker to enhance their privileges...

The vulnerability of the `cachefiles_ondemand_send_req()` function (fs/cachefiles/ondemand.c) in the Linux kernel allows a hacker to trigger a service failure.

The vulnerability of the cachefilesondemandsendreq function fs/cachefiles/ondemand.c in the Linux kernel is related to incorrect resource locking. Exploiting this vulnerability could allow an attacker to cause a service failure...

The vulnerability of the cachefiles component in the Linux operating system’s kernel allows a hacker to cause a service failure.

The vulnerability of the cachefiles component in the Linux operating system’s kernel is related to improper locking mechanisms. Exploiting this vulnerability can allow an attacker to cause a service failure...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Cyclic allocation of msgid to avoid reuse. Reusing the msgid after a maliciously completed reopen request may cause a read request to remain unprocessed, resulting in a hung task, as shown below: t1 | t2 | t3...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: The exposure of the anonymous file descriptor is deferred until after copytouser succeeds. After installing the anonymous file descriptor, we can now see it in userland and close it. However, at this point we may not...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: cachefiles: fixed a slab-use-after-free in fscachewithdrawvolume We encountered the following issue during our fault injection stress test: ================================================================== BUG: KASAN:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Set the object to close if ondemandid 0 in copen. If copen is called maliciously in user mode, it may delete the request corresponding to the random ID. Moreover, the request may not have been read yet...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: cachefiles: Fixed the dentry leak in cachefilesopenfile. A dentry leak may occur when a lookup cookie and a cull operation are performed concurrently. P1 | P2 -----------------------------------------------------------...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: “cachefiles”: requests are removed from xarray during flushing of requests. Even when the CACHEFILESDEAD flag is set, we can still read the requests. Therefore, in concurrent scenarios, a request may be accessed after it has been...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: All requests are flushed after setting CACHEFILESDEAD. In ondemand mode, when the daemon is processing an open request, if the kernel marks the cache as CACHEFILESDEAD, the cachefilesdaemonwrite function will always...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Wait for ondemandobjectworker to finish before dropping the object. When queuing ondemandobjectworker to re-open the object, cachefilesobject is not pinned. The cachefilesobject may be freed when the pending read...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: cachefiles: fixed the slab-use-after-free issue in cachefileswithdrawcookie We encountered the following issue during our fault injection stress test: ================================================================== BUG: KASAN:...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: cachefiles: A consistency check has been added for copen/cread operations. This prevents malicious processes from executing random copen/cread requests, which could potentially crash the system. The added checks are as follows...

Important: kernel

Issue Overview: In the Linux kernel, the following vulnerability has been resolved: net: sched: schmultiq: fix possible OOB write in multiqtune CVE-2024-36978 In the Linux kernel, the following vulnerability has been resolved: usb-storage: alauda: Check whether the media is initialized...

Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: CVE-2024-41014: xfs: add bounds checking to xlogrecoverprocessdata bsc1228408. CVE-2024-41013: xfs: do not walk off the end of a directory data block bsc1228405...

Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-150600105 fixes several issues. The following security issues were fixed: CVE-2024-40921: net: bridge: mst: pass vlan group directly to brmstvlansetstate bsc1227784. CVE-2024-40920: net: bridge: mst: fix suspicious rcu usage in brmstsetstate bsc1227781...

Security update for the Linux Kernel RT (Live Patch 0 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506008 fixes several issues. The following security issues were fixed: CVE-2024-40921: net: bridge: mst: pass vlan group directly to brmstvlansetstate bsc1227784. CVE-2024-40920: net: bridge: mst: fix suspicious rcu usage in brmstsetstate bsc1227781...

Security update for the Linux Kernel (Live Patch 3 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-1506002317 fixes several issues. The following security issues were fixed: CVE-2024-40921: net: bridge: mst: pass vlan group directly to brmstvlansetstate bsc1227784. CVE-2024-40920: net: bridge: mst: fix suspicious rcu usage in brmstsetstate bsc1227781...

Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP6)

This update for the Linux Kernel 6.4.0-15060021 fixes several issues. The following security issues were fixed: CVE-2024-40921: net: bridge: mst: pass vlan group directly to brmstvlansetstate bsc1227784. CVE-2024-40920: net: bridge: mst: fix suspicious rcu usage in brmstsetstate bsc1227781...