Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: userfaultfd: a race between writeprotect and exitmmap has been fixed. A race may occur when a process exits; its virtual memory addresses are removed by exitmmap, and at the same time, userfaultfdwriteprotect is called. This race...

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

A race condition was detected in the Linux kernel’s media/xc4000 device driver, specifically in the xc4000getfrequency function. This can lead to a return value overflow issue, potentially causing malfunctions or denial-of-service problems...

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

In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fixed a memory leak in initcreditreturn. When dmaalloccoherent fails to allocate dd-crbasei.va, initcreditreturn should deallocate dd-crbase and dd-crbasei that were allocated earlier. Otherwise, those resources will nev...

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

In the Linux kernel, the following vulnerability has been resolved: Ring-buffer: Do not attempt to read beyond the “commit” boundary. When iterating over the ring buffer while the ring buffer is active, the writer can corrupt the reader’s data. There are mechanisms to detect and handle this issue...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: Intel: hda: Fixed a potential buffer overflow issue caused by snprintf. The snprintf function returns the size of the string that would be filled if it exceeds the given buffer size. Therefore, using this value may lea...

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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed a deadlock issue when converting an inline directory in nojournal mode. In nojournal mode, ext4finishconvertinlinedir can cause a self-deadlock by calling ext4handledirtydirblock after having already taken the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix memory leak when blob is malformed The bug fix was incomplete; it “replaced” a crash with a memory leak. The old code contained an assignment to ret embedded within a conditional statement; this has been...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: mtd: maps: The refcount leak in offlashprobeversatile has been fixed. The function offindmatchingnodeandmatch returns a node pointer with a refcount incremented. We should use ofnodeput on this pointer when it is no longer needed...

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

In the Linux kernel, the following vulnerability has been resolved: jfs: Fixed an out-of-bounds shift in dbDiscardAG. When searching for the next smaller log2 block, BLKSTOL2 returned 0, causing the shift exponent -1 to become negative. This patch fixes the issue by exiting the loop directly when...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: spi: Fix for statistics allocation. The controller per-cpu statistics is not allocated until after the controller has been registered with the driver core. This creates a window during which accessing the sysfs attributes may lea...

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

A use-after-free vulnerability in the Linux kernel’s afunix component can be exploited to achieve local privilege escalation. The unixstreamsendpage function attempts to add data to the last skb in the peer’s recv queue without locking the queue. This creates a race condition where...

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 6.1

In the Linux kernel, the following vulnerabilities have been resolved: nfs: fixed a panic that occurred when nfs4fflayoutprepareds failed. We have observed the following panics in production: BUG: NULL pointer dereferencing in the kernel, address: 0000000000000065 PGD: 2f485f067; P4D: 2f485f067;...

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 Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: wcd934x: Added ofnodeput before wcdb934xcodecparsedata. The devicenode pointer is returned by ofparsephandle with a refcount incremented. We should use ofnodeput on it after the operation is completed. This is simil...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: usb: ulpi: Fix for the debugfs directory leak The ULPI per-device debugfs root is named after the parent of the ulpi device. However, ulpiunregisterinterface attempts to remove a debugfs directory named after the ulpi device...

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 prevented in encodecapmsg. In the file fs/ceph/caps.c, within encodecapmsg, the “use after free” error was detected by KASAN at this line – cephbuffergetarg-xattrbuf;. This means that before t...

Astra Linux – Vulnerability in Linux 5.15

A flaw was discovered in the AMD nested virtualization SVM feature of the KVM. A malicious L1 guest could intentionally fail to intercept the shutdown of a cooperative nested guest L2, potentially causing a page fault and kernel panic in the host L0...

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

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftchainfilter: handling of NETDEVUNREGISTER for inet/ingress basechain Remove netdevice from the inet/ingress basechain in case NETDEVUNREGISTER event is reported; otherwise, a stale reference to netdevice remains in...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fixed a potential data race in the PCM memory allocation helpers The PCM memory allocation helpers include a sanity check to prevent too many buffer allocations. However, this check is performed without proper locking,...