Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ceph: fixed a deadlock or deadcode issue caused by misuse of dget. The lock order between denty and its parent is incorrect; we should always ensure that the parent gets the lock first. However, since this deadcode is never used,...

Astra Linux – Vulnerability in Ceph

A flaw was discovered in ceph-dashboard. The JSON Web Token JWT used for user authentication is stored by the frontend application in the browser’s localStorage, which is potentially vulnerable to attacks via XSS attacks. The most significant threat of this vulnerability is related to data...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ceph: The reference to cephstring should be placed correctly after the asynccreate attempt. The reference obtained by tryprepasynccreate is currently being leaked. Ensure that we place this reference correctly...

Astra Linux – Vulnerability in Ceph

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Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: libceph: Use u32 for non-negative values in cephmonmapDecode This patch fixes unnecessary implicit conversions that change the signedness of bloblen and nummon in cephmonmapDecode. Currently, bloblen and nummon are signed int...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ceph: The “use after free” error was caught by KASAN at the line cephbuffergetarg-xattrbuf;. This means that the reference count could not be incremented before the memory was freed. In the same file, in the handlecapgrant...

Astra Linux – Vulnerability in Ceph

An authentication flaw was discovered in Ceph versions prior to 14.2.20. When the monitor processes CEPHXGETAUTHSESSIONKEY requests, it does not sanitize otherkeys, allowing for key reuse. An attacker who can request a globalid can exploit the ability of any user to request a globalid that has...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Ceph: Proper snapshot context was provided for the cephzeropartialobject function. The cephzeropartialobject function lacked the correct snapshot context for its OSD write operations, which could lead to inconsistencies in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: libceph: The calctarget function should set t-paused, rather than simply clearing it. Currently, calctarget clears t-paused if the request should no longer be paused. However, it never sets t-paused, even though it can determine...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ceph: Stopping functions that attempt paths longer than PATHMAX If the full path to be built by cephmdscbuildpath is longer than PATHMAX, this function will enter an infinite loop, effectively blocking the entire task. Most of th...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: TCP: The check skb variable is not NULL in tcprtodeltaus. We have some machines running stock Ubuntu 20.04.6; these machines use the 5.4.0-174-generic kernel and run Ceph. Recently, a NULL pointer dereference occurred in...

Astra Linux – Vulnerability in Ceph

Ceph is a distributed object, block, and file storage platform. In versions 19.2.3 and earlier, it is possible to send a JWT with “none” as its JWT algorithm. By doing this, the JWT signature is not checked. The vulnerability lies most likely in the RadosGW OIDC provider. As of the time of...

Astra Linux – Vulnerability in Ceph

Ceph is a distributed object, block, and file storage platform. In versions up to and including 19.2.3, using the x-amz-copy-source argument to copy an object and specifying an empty string as its content resulted in the RGW daemon crashing, leading to a DoS attack. As of the time of publication,...

Astra Linux – Vulnerability in Linux 5.15

A issue was discovered in the net/ceph/messengerv2.c file within the Linux kernel before version 6.4.5. There is an integer signedness error, which leads to a buffer overflow and remote code execution via the HELLO command or one of the AUTH frames. This occurs due to an untrusted length value...

Astra Linux – Vulnerability in Ceph

A flaw was discovered in Ceph versions prior to 16.y.z, where Ceph stores mgr module passwords in plain text. This can be identified by searching the mgr logs using Grafana and the dashboard, as the passwords are visible...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ceph: Do not leak snaprwsem when handlecapgrant is called on an IMPORT operation. When handlecapgrant is called on an IMPORT operation, the snaprwsem resource is held, and the function is expected to release it before returning...

Astra Linux – Vulnerability in Ceph

A privilege escalation flaw was discovered in Ceph. Ceph-crash.service allows a local attacker to escalate privileges to root through a crash dump, thereby exposing privileged information...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ceph: Messages from MDS are dropped when unmounting When unmounting, all dirty buffers will be flushed. After the last osd request is completed, the last reference to icount will be released. Then, the dirty buffers will be flush...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ceph: Avoid putting the realm twice when decoding snaps fails. When decoding snaps fails, it may leave the 'firstrealm' and 'realm' pointers pointing to the same snaprealm memory. Doing so could lead to random use-after-free...

Astra Linux – Vulnerability in Ceph

A flaw was discovered in Ceph, related to URL processing on RGW backends. An attacker can exploit this issue by providing a null URL, causing the RGW to crash and resulting in a denial of service...