CVE-2026-97506

CVE CVE-2026-97506EUVD EUVD-2026-86104Published 2026-09-24T16:04:55.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: crypto: ixp4xx - fix buffer chain unwind on allocation failure chainup_buffers() builds a linked list of buffer descriptors for a scatterlist. If dma_pool_alloc() fails while constructing the list, the current code sets buf to NULL and later dereferences it unconditionally at the end of the function: buf->next = NULL; buf->phys_next = 0; This can lead to a null-pointer dereference on allocation failure. If the failure happens after part of the descriptor chain has already been allocated and DMA-mapped, the partially constructed chain also needs to be released. Fix this by terminating the partially constructed chain on allocation failure and letting the callers unwind it via their existing cleanup paths. Also fix ablk_perform() to preserve the hook pointers before checking for failure, so partially built chains can be freed correctly.

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 patch: 6.18.53; 0 <6.12.111; 0 <6.18.53; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <04cb00106ca4d0fa9eca24cadc4eda6036e855c8; patch: 6.12.111; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <028a7f4f3d69e551f6bf9f728d547bbf4cfc707d; patch: 7.2; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <25056329384010a8672552b134f609601dc4f80e

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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