CVE-2026-74655

A flaw was found in the Linux kernel. Specifically, a vulnerability exists in the qcom-geni Universal Asynchronous Receiver-Transmitter UART driver's transmit Direct Memory Access DMA buffer flush mechanism. A local user can exploit this by initiating a large write operation immediately followed ...

SUSE CVE-2026-74655

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

CVE-2026-74655

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

CVE-2026-74655

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

UBUNTU-CVE-2026-74655

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

CVE-2026-74655

CVE-2026-74655 is a Denial of Service flaw in the Linux kernel's qcom-geni UART driver (DMA-mode). The root cause is a missing flush_buffer callback in the DMA-mode uart_ops: when TCOFLUSH is issued during an in-flight TX DMA transfer, the transfer can complete after the serial core resets the tr...

CVE-2026-74655 serial: qcom-geni: fix TX DMA buffer flush

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

EUVD-2026-64592

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

CVE-2026-74655 serial: qcom-geni: fix TX DMA buffer flush

In the Linux kernel, the following vulnerability has been resolved: serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted TX DMA frames. The DMA-mode uartops does not provide a flushbuffer...

Linux Distros Unpatched Vulnerability : CVE-2026-74655

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - serial: qcom-geni: fix TX DMA buffer flush When transmit flushing a qcom-geni UART during an ongoing TX DMA, the UART gets stuck infinitely repeating corrupted ...

PT-2026-79660

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the qcom-geni UART driver where flushing the transmit buffer during an ongoing TX DMA Direct Memory Access causes the UART to infinitely repeat corrupted TX DMA frames...

CVE-2026-63883

A flaw was found in the Linux kernel's qcomgeni serial driver. A race condition can occur when the uartflushbuffer function executes before the Direct Memory Access DMA completion interrupt is processed. This timing issue can lead to a kernel First-In, First-Out kfifo buffer underflow...

Linux Distros Unpatched Vulnerability : CVE-2026-63883

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following...

CVE-2026-63883

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

CVE-2026-63883 serial: qcom_geni: fix kfifo underflow when flush precedes DMA completion IRQ

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

EUVD-2026-45768

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

CVE-2026-63883

The CVE relates to the Linux kernel serial driver for Qualcomm GENI: a kfifo underflow race when uart_flush_buffer() runs before the DMA completion IRQ. The race sequence can cause stale DMA data to be submitted due to kfifo_len() being reset to 0 while tx_remaining is nonzero, leading to an inco...

CVE-2026-63883 serial: qcom_geni: fix kfifo underflow when flush precedes DMA completion IRQ

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

CVE-2026-63883

In the Linux kernel, the following vulnerability has been resolved: serial: qcomgeni: fix kfifo underflow when flush precedes DMA completion IRQ When uartflushbuffer runs before the DMA completion IRQ is delivered, the following race can occur all steps serialized by uartportlock: 1. DMA starts:...

PT-2026-61200

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A race condition exists in the qcom geni serial driver when uart flush buffer is executed before the DMA completion interrupt request IRQ is delivered. If kfifo reset is called while a D...