CVE-2026-72048

CVE CVE-2026-72048EUVD EUVD-2026-59006Published 2026-08-15T05:52:06.000ZLast changed 2026-08-17T05:07:14.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ieee802154: ca8210: fix cas_ctl leak on spi_async failure ca8210_spi_transfer() allocates cas_ctl with kzalloc_obj(GFP_ATOMIC) and relies entirely on the SPI completion callback ca8210_spi_transfer_complete() to free it. The spi_async() API only invokes the completion callback on successful submission. On failure it returns a negative error code without ever queuing the callback, which leaves cas_ctl and its embedded spi_message and spi_transfer orphaned. Every kfree(cas_ctl) in the driver is inside the completion callback, so there is no other reclamation path. ca8210_spi_transfer() is called from ca8210_spi_exchange(), the interrupt handler ca8210_interrupt_handler(), and from the retry path inside the completion callback itself. The exchange and interrupt handler paths loop on -EBUSY, so under sustained SPI bus contention every retry iteration leaks a fresh cas_ctl (~600 bytes per occurrence). Fix it by freeing cas_ctl on the spi_async() error path. While here, correct the misleading error string: the function calls spi_async(), not spi_sync().

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux 4.12; patch: 5.15.212; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <460c5cd51e4d7d15b317f178f42cfcb666c0fe91; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <7e3630fbb6aabb844bbf35746dee0bf3894100c7; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <e09390e439bd7cca30dd10893b1f64802961667a; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <cb5cca1d2a908ddd5e357971de0f2009617b8d6a; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <b07aea90dbc6e188c74c100af64b77b9482ffc65; patch: 7.2; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <b9071dc7889bef42590e04fbf3e56cc65e1e5e6e; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <fe90605b651573d30be8293ff5be40e3d7023117; patch: 6.12.97; ded845a781a578dfb0b5b2c138e5a067aa3b1242 <d4a397fe803c2d157f6ebb068b802ef75fbf109e; patch: 5.10.261; patch: 6.6.145; patch: 6.18.40; patch: 6.1.178; patch: 0; patch: 7.1.5

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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