CVE - CVE-2024-41088

CVE-ID
CVE-2024-41088	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: can: mcp251xfd: fix infinite loop when xmit fails When the mcp251xfd_start_xmit() function fails, the driver stops processing messages, and the interrupt routine does not return, running indefinitely even after killing the running application. Error messages: [ 441.298819] mcp251xfd spi2.0 can0: ERROR in mcp251xfd_start_xmit: -16 [ 441.306498] mcp251xfd spi2.0 can0: Transmit Event FIFO buffer not empty. (seq=0x000017c7, tef_tail=0x000017cf, tef_head=0x000017d0, tx_head=0x000017d3). ... and repeat forever. The issue can be triggered when multiple devices share the same SPI interface. And there is concurrent access to the bus. The problem occurs because tx_ring->head increments even if mcp251xfd_start_xmit() fails. Consequently, the driver skips one TX package while still expecting a response in mcp251xfd_handle_tefif_one(). Resolve the issue by starting a workqueue to write the tx obj synchronously if err = -EBUSY. In case of another error, decrement tx_ring->head, remove skb from the echo stack, and drop the message. [mkl: use more imperative wording in patch description]
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/3e72558c1711d524e3150103739ddd06650e291b URL:https://git.kernel.org/stable/c/3e72558c1711d524e3150103739ddd06650e291b MISC:https://git.kernel.org/stable/c/6c6b4afa59c2fb4d1759235f866d8caed2aa4729 URL:https://git.kernel.org/stable/c/6c6b4afa59c2fb4d1759235f866d8caed2aa4729 MISC:https://git.kernel.org/stable/c/d8fb63e46c884c898a38f061c2330f7729e75510 URL:https://git.kernel.org/stable/c/d8fb63e46c884c898a38f061c2330f7729e75510 MISC:https://git.kernel.org/stable/c/f926c022ebaabf7963bebf89a97201d66978a025 URL:https://git.kernel.org/stable/c/f926c022ebaabf7963bebf89a97201d66978a025
Assigning CNA
kernel.org
Date Record Created
20240712	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240712)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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