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

A use-after-free vulnerability exists in the Linux kernel’s net/sched:clsfw component, which can be exploited to achieve local privilege escalation. When the fwchange function is called on an existing filter, the entire tcfresult struct is always copied into the new instance of the filter. This...

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

In the Linux kernel, the following vulnerabilities have been resolved: NFS: Fixed potential data corruption issues. We must ensure that the subrequests are reattached to the head before we can retransmit a request. If the head was not on the commit lists, because the server wrote it synchronously...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in KVM AMD Secure Encrypted Virtualization SEV within the Linux kernel. A KVM guest that uses SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the VMGEXIT handler recursively. If an attacker manages to call the handler...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: fix warning in ‘ext4dareleasespace’ The Syzkaller report describes the issue as follows: EXT4-fs loop0: Details of free/dirty blocks EXT4-fs loop0: freeblocks=0 EXT4-fs loop0: dirtyblocks=0 EXT4-fs loop0: Details of block...

Astra Linux – Vulnerability in Mariadb 10.3

Vulnerability in the MySQL Server product of Oracle MySQL component: Server: DML. The supported versions affected are 5.7.33 and earlier, as well as 8.0.23 and earlier. This easily exploitable vulnerability allows a highly privileged attacker with network access via multiple protocols to compromi...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

A use-after-free vulnerability in the Linux Kernel’s iouring subsystem can be exploited to achieve local privilege escalation. Sending a iouring cancel poll request with a linked timeout can lead to a Use-after-Free UAF in a hrtimer mechanism. We recommend upgrading to the latest version of the...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

The Linux kernel allows user-space processes to enable mitigations by calling prctl with PRSETSPECULATIONCTRL, which disables the speculation feature, as well as through the use of seccomp. We noticed that on virtual machines of at least one major cloud provider, the kernel still left the victim...

Astra Linux – Vulnerability in Linux 5.10

A out-of-bounds memory write flaw was discovered in the Linux kernel’s watchqueue event notification subsystem. This flaw can overwrite parts of the kernel state, potentially allowing a local user to gain privileged access or cause a denial of service on the system...

Astra Linux – Vulnerability in NTP

In ntp 4.2.8p10, 4.2.8p11, 4.2.8p12, and 4.2.8p13, remote attackers can prevent a broadcast client from synchronizing its clock with a broadcast NTP server through soofed modes 3 and 5. The attacker must either be part of the same broadcast network or control a slave device in that broadcast...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

With shadow paging enabled, the INVPCID instruction results in a call to kvmmmuinvpcidgva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set, and the result is a NULL pointer dereference...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Validates the session ID and tree ID in a compound request. This patch validates the session ID and tree ID within a compound request. If the first operation in the compound is an SMB2 ECHO request, ksmbd bypasses the...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: A memory leak was fixed in lpfccreateport. The commit 5e633302ace1 “scsi: lpfc: vmid: Added support for VMID in the mailbox command” introduced allocations for the VMID resources in lpfccreateport after the call to...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: SCSI: QLA2xxx – Fixed potential NULL pointer dereferencing issues. The Klocwork tool reported that “curdsd” might be dereferenced. A fix has been added to validate the pointer before dereferencing it...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ocfs2: Fixed data corruption after a failed write operation. When buffering a write attempt fails and data cannot be copied into the underlying page cache, the ocfs2writeendnolock function simply zeroes out and dirtyens the page...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerabilities have been resolved: can: vxcan: vxcanxmit: fix use after free bug After calling netifrxniskb, dereferencing the skb is unsafe. In particular, the canfdframe structure, which aliases skb memory, is accessed after the netifrxni function...

Astra Linux – Vulnerability in Linux 5.10

Ubuntu Linux 6.8 GA retains the legacy AFUNIX garbage collector, but the upstream commit 8594d9b85c07 "afunix: Do not call skbget for OOB skb" addresses this issue. When orphaned MSGOOB sockets reach unixgc, the garbage collector still calls kfreeskb, assuming that OOB SKBs hold two references...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: Reworked the handling of long task execution when adding/ deleting entries. When adding or deleting a large number of elements in one step using ipset, it may take considerable time, and soft lockup errors can...

Astra Linux – Vulnerability in Linux, Linux 5.10

The drivers/block/floppy.c file in the Linux kernel before version 5.17.6 is vulnerable to a denial-of-service attack due to a concurrency issue after deallocating rawcmd in the rawcmdioctl function...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: nfc: st21nfca: fixed memory leaks in EVTTRANSACTION handling Error paths do not free the previously allocated memory. Add devmkfree to those failure paths...

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...