In the Linux kernel, the following vulnerability has been resolved: spi: amlogic: spifc-a4: Fix DMA mapping error handling Fix three bugs in aml_sfc_dma_buffer_setup() error paths: 1. Unnecessary goto: When the first DMA mapping (sfc->daddr) fails, nothing needs cleanup. Use direct return instead of goto. 2. Double-unmap bug: When info DMA mapping failed, the code would unmap sfc->daddr inline, then fall through to out_map_data which would unmap it again, causing a double-unmap. 3. Wrong unmap size: The out_map_info label used datalen instead of infolen when unmapping sfc->iaddr, which could lead to incorrect DMA sync behavior.

A flaw was found in the Linux kernel, specifically within the `spi: amlogic: spifc-a4` module. This vulnerability involves errors in the handling of Direct Memory Access (DMA) mapping within the `aml_sfc_dma_buffer_setup()` function. These errors include a double-unmap bug and an incorrect unmap size, which can lead to improper memory synchronization. An attacker could potentially exploit these memory management issues to cause a system crash, leading to a Denial of Service (DoS).

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43461 https://nvd.nist.gov/vuln/detail/CVE-2026-43461 https://lore.kernel.org/linux-cve-announce/2026050801-CVE-2026-43461-908f@gregkh/T