{"cve":"CVE-2026-97506","nvd":{"published":"2026-09-24T17:17:28.423","modified":"2026-10-03T11:17:59.963","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ixp4xx - fix buffer chain unwind on allocation failure\n\nchainup_buffers() builds a linked list of buffer descriptors for a\nscatterlist. If dma_pool_alloc() fails while constructing the list, the\ncurrent code sets buf to NULL and later dereferences it unconditionally\nat the end of the function:\n\n  buf->next = NULL;\n  buf->phys_next = 0;\n\nThis can lead to a null-pointer dereference on allocation failure.\n\nIf the failure happens after part of the descriptor chain has already\nbeen allocated and DMA-mapped, the partially constructed chain also\nneeds to be released.\n\nFix this by terminating the partially constructed chain on allocation\nfailure and letting the callers unwind it via their existing cleanup\npaths. Also fix ablk_perform() to preserve the hook pointers before\nchecking for failure, so partially built chains can be freed correctly.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/028a7f4f3d69e551f6bf9f728d547bbf4cfc707d","https://git.kernel.org/stable/c/04cb00106ca4d0fa9eca24cadc4eda6036e855c8","https://git.kernel.org/stable/c/25056329384010a8672552b134f609601dc4f80e","https://git.kernel.org/stable/c/4918b0bd7d2baafb45d87dca9e322137c96005c2","https://git.kernel.org/stable/c/8c37bc8d6a6f77bf9593fb1bcab6c14c7cf02991"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-97506","score":0.00161,"percentile":0.05225,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}