{"id":"CVE-2026-98298","published":"2026-10-06T09:18:20.537","lastModified":"2026-10-06T09:18:20.537","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()\n\nIn mmp_pdma_prep_slave_sg(), for_each_sg() iterates the scatterlist\nputting each entry into 'sg', but the entry length is read from 'sgl'\n(the list head) instead of 'sg' (the current entry):\n\n    for_each_sg(sgl, sg, sg_len, i) {\n        addr = sg_dma_address(sg);\n        avail = sg_dma_len(sgl);   /* should be 'sg' */\n\nConsequently 'avail' is always the length of the first entry. For\nmulti-sg lists this causes out-of-bounds reads when a later entry is\nshorter than the first, and silent data loss when it is longer.\nSingle-sg or uniformly-sized lists happen to mask the issue.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47","tags":[]},{"url":"https://git.kernel.org/stable/c/2148db529f082d6e3ca95413bf943442f4ef30cc","tags":[]},{"url":"https://git.kernel.org/stable/c/4a33886057e6d127555efb022879c583e966acc5","tags":[]},{"url":"https://git.kernel.org/stable/c/54ccc01012a240476edf641bf1a2b8bff54fe6ae","tags":[]},{"url":"https://git.kernel.org/stable/c/88a505330eb06128f7ce79a4c5e4832b7601b3d1","tags":[]},{"url":"https://git.kernel.org/stable/c/bae65e4925928f77824ca0103122e2ed20ef5802","tags":[]},{"url":"https://git.kernel.org/stable/c/d920c07aa6d89ec11afdb6976aafaee9563a5234","tags":[]},{"url":"https://git.kernel.org/stable/c/f448a5f5bd10d792440a1b08cf2e8f311767032d","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}