CVE-2026-54904 concurrent-ruby: `AtomicReference#update` livelocks when the stored value is `Float::NAN`

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-2026-52919

A flaw was found in the batman-adv module of the Linux kernel. During the shutdown process of the tpmeter sender, an atomic counter can underflow due to multiple decrements. This can cause the sender kernel thread to loop indefinitely, leading to a use-after-free vulnerability if the associated...

CVE-2026-52939

A flaw was found in the Linux kernel's Reliable Datagram Sockets RDS component. An unprivileged local user can trigger a kernel panic by sending a specially crafted atomic control message cmsg over an active RDS/InfiniBand IB connection. This issue is caused by improper handling of masked atomic...

Astra Linux – Vulnerability found in Linux 6.12, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: scsi: sg: Do not sleep in atomic context The function sgfinishremreq calls blkrqunmapuser. The latter function may sleep. Therefore, call sgfinishremreq with interrupts enabled instead of disabled...

UBUNTU-CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

UBUNTU-CVE-2026-52939

In the Linux kernel, the following vulnerability has been resolved: net/rds: fix NULL deref in rdsibsendcqehandler on masked atomic completion rdsibxmitatomic always programs a masked atomic opcode IBWRMASKEDATOMICCMPANDSWP or IBWRMASKEDATOMICFETCHANDADD for every RDS atomic cmsg. But the...

CVE-2026-52939

In the Linux kernel, the following vulnerability has been resolved: net/rds: fix NULL deref in rdsibsendcqehandler on masked atomic completion rdsibxmitatomic always programs a masked atomic opcode IBWRMASKEDATOMICCMPANDSWP or IBWRMASKEDATOMICFETCHANDADD for every RDS atomic cmsg. But the...

EUVD-2026-38709

In the Linux kernel, the following vulnerability has been resolved: net/rds: fix NULL deref in rdsibsendcqehandler on masked atomic completion rdsibxmitatomic always programs a masked atomic opcode IBWRMASKEDATOMICCMPANDSWP or IBWRMASKEDATOMICFETCHANDADD for every RDS atomic cmsg. But the...

CVE-2026-52939

Linux kernel vulnerability CVE-2026-52939 affects RDS over InfiniBand. A NULL dereference can occur in rds_ib_send_cqe_handler() when handling masked atomic completions, due to rds_ib_send_unmap_op() not covering masked opcodes. The issue occurs because masked atomic opcodes (IB_WR_MASKED_ATOMIC_...

EUVD-2026-38722

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

CVE-2026-52919 batman-adv: fix tp_meter counter underflow during shutdown

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the "sending" atomic counter. If multiple paths e.g. timeout, user cancel, and normal finish call this function, the...

Linux Distros Unpatched Vulnerability : CVE-2026-52939

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - net/rds: fix NULL deref in rdsibsendcqehandler on masked atomic completion rdsibxmitatomic always programs a masked atomic opcode IBWRMASKEDATOMICCMPANDSWP or...

Linux Distros Unpatched Vulnerability : CVE-2026-52919

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - batman-adv: fix tpmeter counter underflow during shutdown batadvtpsendershutdown unconditionally decrements the sending atomic counter. If multiple paths e.g...

PT-2026-51712

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the batman-adv module where the batadv tp sender shutdown function unconditionally decrements the sending atomic counter. If this function is called multiple times...

PT-2026-51581

Name of the Vulnerable Software and Affected Versions ash-project ash versions 3.0.0 through 3.29.2 Description An issue exists where users can set the value of a private action argument intended to be controlled exclusively by trusted server-side code. Action arguments declared with public?: fal...

Concurrent Ruby : `AtomicReference#update` livelocks when the stored value is `Float::NAN`

Summary 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, newvalue succeeds. - Numeric compareandset, which checks old ==...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop in the AtomicReferenceupdate function when the current value is Float::NAN. An attacker can cause indefinite busy retry loops and CPU exhaustion by supplying malicious numeric data. Remediation Upgrade concurrent-ruby to...

GHSA-H8W8-99G7-QMVJ Concurrent Ruby : `AtomicReference#update` livelocks when the stored value is `Float::NAN`

Summary 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, newvalue succeeds. - Numeric compareandset, which checks old ==...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: drm: renesas: rz-du: mipidsi: Fixed a kernel panic that occurred when rebooting certain panels. Since commit 56de5e305d4b “clk: renesas: r9a07g044: Added MSTOP for RZ/G2L”, we may encounter the following kernel panic when...