CVE-2026-51261

The CVE-2026-51261 entry concerns missing mutex synchronization in AudioBuffer::freeSpace() of schreibfaul1 ESP32-audioI2S 3.4.5, causing a race between concurrent tasks. The function computes available buffer space without protecting shared read/write pointers, returning an incorrectly large val...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: fixed an issue where rebuilding the free space tree using multiple transactions might fail. When rebuilding the free space tree, and while modifying the free space tree, we may need to allocate a new metadata block group. ...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: btrfs: calling btrfsremovefreespacecachelocked on cache load failure Now that lockdep is kept enabled throughout our CI processes, I noticed the following stack trace in generic/475: ------------ Cut here --- WARNING: CPU: 1 PID:...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Binder: Fixed an issue where asyncfreespace accounting for empty parcels was incorrect. In version 4.13, commit 74310e06be4d “android:binder: Move buffer out of area shared with user space” fixed a issue related to the visibility...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: btrfs: The BUGON functions in addnewfreespace have been removed. In addnewfreespace, there were these BUGON functions that were used to handle any failures in adding free space to the in-memory free space cache. Such failures...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not drop the extentmap for free space inode on a write error While running the CI for an unrelated change, I encountered the following panic: with generic/648 on btrfsholesspacecache. Assertion failed: blockstart !=...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: btrfs: Fixed a race condition when deleting the free space root from the “dirty cow roots” list. When deleting the free space tree, we are deleting the free space root from the list fsinfo-dirtycowonlyroots, without locking it...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007432)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007432 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: don't drop extentmap for free space inode on write error While running the CI for an...

Unity Linux 20.1050e / 20.1060e Security Update: kernel (UTSA-2026-007346)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007346 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: do not assert we found block group item when creating free space tree Currently, when...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007613)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-007613 advisory. In the Linux kernel, the following vulnerability has been resolved: btrfs: fix assertion when building free space tree When building the free space tree with the blo...

Quantum Bit Error Rate Analysis in BB84 Quantum Key Distribution: Measurement, Statistical Estimation, and Eavesdropping Detection

Quantum Key Distribution QKD provides information-theoretic security by exploiting the principles of quantum mechanics. Among QKD protocols, the BB84 scheme remains the most widely adopted for both theoretical research and practical implementation. A critical parameter determining the reliability...

CVE-2026-23249

In the Linux kernel, the following vulnerability has been resolved: xfs: check for deleted cursors when revalidating two btrees The free space and inode btree repair functions will rebuild both btrees at the same time, after which it needs to evaluate both btrees to confirm that the corruptions a...

CVE-2026-23249

In the Linux kernel, the following vulnerability has been resolved: xfs: check for deleted cursors when revalidating two btrees The free space and inode btree repair functions will rebuild both btrees at the same time, after which it needs to evaluate both btrees to confirm that the corruptions a...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-004353)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004353 advisory. In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-003914)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003914 advisory. In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002906)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002906 advisory. An issue was discovered in the Linux kernel through 4.17.10. There is a use-after-free in trymergefreespace when mounting a crafted btrfs image, because of a lack of...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: btrfs: Do not assert that we found a block group item when creating a free space tree. Currently, when building a free space tree using populatefreespacetree, if the block group tree feature is not enabled, we always expect to fi...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000360)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000360 advisory. In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a...

Unity Linux 20.1070e Security Update: kernel (UTSA-2026-000528)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000528 advisory. In the Linux kernel 5.0.21 and 5.3.11, mounting a crafted btrfs filesystem image, performing some operations, and then making a syncfs system call can lead to a...

SUSE CVE-2023-54185

In the Linux kernel, the following vulnerability has been resolved: btrfs: remove BUGON's in addnewfreespace At addnewfreespace we have these BUGON's that are there to deal with any failure to add free space to the in memory free space cache. Such failures are mostly -ENOMEM that should be very...