CVE-2026-52961 ceph: fix BUG_ON in __ceph_build_xattrs_blob() due to stale blob size

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here ------------ 40243.605956 kernel BUG at fs/ceph/xattr.c:918! 40243.607142...

CVE-2026-52961

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here ------------ 40243.605956 kernel BUG at fs/ceph/xattr.c:918! 40243.607142...

CVE-2026-52961 ceph: fix BUG_ON in __ceph_build_xattrs_blob() due to stale blob size

In the Linux kernel, the following vulnerability has been resolved: ceph: fix BUGON in cephbuildxattrsblob due to stale blob size The generic/642 test-case can reproduce the kernel crash: 40243.605254 ------------ cut here ------------ 40243.605956 kernel BUG at fs/ceph/xattr.c:918! 40243.607142...

CVE-2026-52954 libceph: handle rbtree insertion error in decode_choose_args()

In the Linux kernel, the following vulnerability has been resolved: libceph: handle rbtree insertion error in decodechooseargs A message of type CEPHMSGOSDMAP contains an OSD map that itself contains a CRUSH map. The received CRUSH map may optionally contain chooseargs that get decoded in...

CVE-2026-54906

Vulnerability summary (CVE-2026-54906) : In the Ruby concurrency library concurrent-ruby (ReadWriteLock), versions prior to 1.3.7 expose a synchronization bug in the public API. Specifically, release_write_lock does not verify that the calling thread owns the write lock, allowing another thread t...

CVE-2026-54906

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLockreleasewritelock does not verify that the calling thread acquired the write lock. Any thread with access to the lock object can release an active write lock held by another thread. A second writer can...

CVE-2026-54904

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::AtomicReferenceupdate can enter a permanent busy retry loop when the current value is Float::NAN. The issue is caused by the interaction between AtomicReferenceupdate, which retries until compareandsetoldvalue,...

CVE-2026-54905

CVE-2026-54905 affects the concurrent-ruby library, specifically Concurrent::ReentrantReadWriteLock. Before version 1.3.7, after a thread acquires the read lock 32,768 times, the local read count overflows into the WRITE_LOCK_HELD bit, causing try_write_lock to treat the thread as if it holds a w...

CVE-2026-54905

concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after one thread acquires the read lock 32,768 times. The lock stores a thread's local read and write hold counts in one integer. The low 15 bits are used...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: drm/buddy: This issue is prevented by validating the rounded allocation size. When DRMBUDDYCONTIGUOUSALLOCATION is set, the requested size is rounded up to the next power of two using rounduppowoftwo. Similarly, for non-contiguou...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: vhost: The bound check for the vdpa group has been moved to vhostvdpa. Duplication has been eliminated by consolidating these changes. This reduces the possibility that a parent driver may miss these checks. Additionally, we...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: f2fs: Fixed to avoid mapping the wrong physical block for the swapfile. Xiaolong Guo reported a bug related to f2fs in bugzilla 1. 1 https://bugzilla.kernel.org/showbug.cgi?id=220951 Quoted: “When using the stress-ng swap stress...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: Team: Fix for checking whether the port is enabled in teamqueueoverrideportpriochanged. A syzkaller bug was recently reported with the following trace: listdel corruption; ffff888058bea080-prev is LISTPOISON2 dead000000000122...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: PCI: Fixed error handling for pcislottrylock The commit a4e772898f8b “PCI: Added bridge lock to pcibuslock” delegates the bridge device’s pcidevtrylock to pcibustrylock in pcislottrylock. However, it forgot to remove the...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: Tracing: The WARNON message in tracingbuffersmmapclose has been fixed. When a process forks, the child process copies the parent’s virtual memory addresses, but the usermapped reference count is not incremented. As a result, when...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: nvme: nvme-fc: Ensure -ioerrwork is cancelled in nvmefcdeletectrl nvmefcdeleteassociation waits for pending I/O to complete before returning. An error can cause -ioerrwork to be queued after cancelworksync has been called. Mov...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: f2fs: Ensure that node page reads are completed before f2fsputsuper finishes. The Xfstests generic/335 and generic/336 tests sometimes crash with the following message: F2FS-fs dm-0: Detect a reference count leak in the filesyste...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: MIPS: Work around LLVM bug when gp is used as global register variable On MIPS, currentthreadinfo is defined as global register variable locating in $gp, and is simply assigned with new address during kernel relocation. This...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: kcm: fixed zero-frag skb in fraglist in case of partial sendmsg errors Syzkaller reported a warning in kcmwritemsgs when processing a message with a zero-fragment skb in the fraglist. When kcmsendmsg fills MAXSKBFRAGS fragments i...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: ipv6: A bug in rt6getpcpuroute under PREEMPTRT has been fixed. On PREEMPTRT kernels, after rt6getpcpuroute returns NULL, the current task can be preempted. Another task running on the same CPU may then execute rt6makepcpuroute an...