CVE-2024-41088 (GCVE-0-2024-41088)

Vulnerability from cvelistv5 – Published: 2024-07-29 15:48 – Updated: 2025-11-03 22:00
VLAI?
Title
can: mcp251xfd: fix infinite loop when xmit fails
Summary
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]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 55e5b97f003e85e66babb55f357627d52081a264 , < f926c022ebaabf7963bebf89a97201d66978a025 (git)
Affected: 55e5b97f003e85e66babb55f357627d52081a264 , < 3e72558c1711d524e3150103739ddd06650e291b (git)
Affected: 55e5b97f003e85e66babb55f357627d52081a264 , < 6c6b4afa59c2fb4d1759235f866d8caed2aa4729 (git)
Affected: 55e5b97f003e85e66babb55f357627d52081a264 , < d8fb63e46c884c898a38f061c2330f7729e75510 (git)
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    Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 6.1.97 , ≤ 6.1.* (semver)
Unaffected: 6.6.37 , ≤ 6.6.* (semver)
Unaffected: 6.9.8 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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