CVE-2026-80737 PUBLISHED

serial: amba-pl011: synchronize DMA teardown

Assigner: Linux
Reserved: 26.08.2026 Published: 03.09.2026 Updated: 03.09.2026

In the Linux kernel, the following vulnerability has been resolved:

serial: amba-pl011: synchronize DMA teardown

dmaengine_terminate_all() does not wait for a running callback, so the TX callback can still touch the TX buffer after it is freed. The RX poll timer reads the RX buffers without the port lock.

Switch to dmaengine_terminate_sync() and delete the RX timer before freeing the buffers.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to a38fae9d212e2d3ed5e9ec0ef773f8c0a27fb76e (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to 44bd0ecc3444882d08ecfbc2b2418d2f463d3186 (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to f70c9d4fba46463a5b1c7b3ee9ee3b40c90dac03 (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to c8c8e895f65fbf71ea6224e27cf8dab91b776e0d (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to 9f6989e477f03a4721d34bb4b09b17accd40283e (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to 5974cb66681eac367107b05924744d7e3b49d41c (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to fdfb46c387241b4eddd36d746793764413285913 (excl.)
  • affected from ead76f329f777c7301e0a5456a0a1c7a081570bd to 440915499231e9db1c361aa45bb702e8fd3b4a32 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.39 is affected
  • unaffected from 0 to 2.6.39 (excl.)
  • unaffected from 5.10.267 to 5.10.* (incl.)
  • unaffected from 5.15.218 to 5.15.* (incl.)
  • unaffected from 6.1.185 to 6.1.* (incl.)
  • unaffected from 6.6.154 to 6.6.* (incl.)
  • unaffected from 6.12.106 to 6.12.* (incl.)
  • unaffected from 6.18.45 to 6.18.* (incl.)
  • unaffected from 7.1.9 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References