{"id":"CVE-2026-98298","state":"PUBLISHED","title":"dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()","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.","publishedAt":"2026-10-06T08:45:56.417Z","updatedAt":"2026-10-19T09:17:09.166Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"f448a5f5bd10d792440a1b08cf2e8f311767032d","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"2148db529f082d6e3ca95413bf943442f4ef30cc","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"d920c07aa6d89ec11afdb6976aafaee9563a5234","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"4a33886057e6d127555efb022879c583e966acc5","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"88a505330eb06128f7ce79a4c5e4832b7601b3d1","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"bae65e4925928f77824ca0103122e2ed20ef5802","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"54ccc01012a240476edf641bf1a2b8bff54fe6ae","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/mmp_pdma.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.7","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/mmp_pdma.c"]}],"references":["https://git.kernel.org/stable/c/f448a5f5bd10d792440a1b08cf2e8f311767032d","https://git.kernel.org/stable/c/2148db529f082d6e3ca95413bf943442f4ef30cc","https://git.kernel.org/stable/c/d920c07aa6d89ec11afdb6976aafaee9563a5234","https://git.kernel.org/stable/c/4a33886057e6d127555efb022879c583e966acc5","https://git.kernel.org/stable/c/88a505330eb06128f7ce79a4c5e4832b7601b3d1","https://git.kernel.org/stable/c/bae65e4925928f77824ca0103122e2ed20ef5802","https://git.kernel.org/stable/c/54ccc01012a240476edf641bf1a2b8bff54fe6ae","https://git.kernel.org/stable/c/075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98298.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98298","state":"PUBLISHED","datePublished":"2026-10-06T08:45:56.417Z","dateUpdated":"2026-10-19T09:17:09.166Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.337Z"},"containers":{"cna":{"title":"dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"f448a5f5bd10d792440a1b08cf2e8f311767032d","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"2148db529f082d6e3ca95413bf943442f4ef30cc","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"d920c07aa6d89ec11afdb6976aafaee9563a5234","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"4a33886057e6d127555efb022879c583e966acc5","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"88a505330eb06128f7ce79a4c5e4832b7601b3d1","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"bae65e4925928f77824ca0103122e2ed20ef5802","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"54ccc01012a240476edf641bf1a2b8bff54fe6ae","versionType":"git"},{"version":"c8acd6aa6bed3c0fd7898202f4ebc534db9085f2","status":"affected","lessThan":"075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/mmp_pdma.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.7","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.54","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.8","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/mmp_pdma.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f448a5f5bd10d792440a1b08cf2e8f311767032d"},{"url":"https://git.kernel.org/stable/c/2148db529f082d6e3ca95413bf943442f4ef30cc"},{"url":"https://git.kernel.org/stable/c/d920c07aa6d89ec11afdb6976aafaee9563a5234"},{"url":"https://git.kernel.org/stable/c/4a33886057e6d127555efb022879c583e966acc5"},{"url":"https://git.kernel.org/stable/c/88a505330eb06128f7ce79a4c5e4832b7601b3d1"},{"url":"https://git.kernel.org/stable/c/bae65e4925928f77824ca0103122e2ed20ef5802"},{"url":"https://git.kernel.org/stable/c/54ccc01012a240476edf641bf1a2b8bff54fe6ae"},{"url":"https://git.kernel.org/stable/c/075bc7b1d3dde5ed43fbaabbc1a69f09b7fc3a47"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:17:09.166Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}