{"id":"CVE-2026-89865","revision":"d85723c334584c4285c3ec7b94a2871d","records":[{"revision":"d85723c334584c4285c3ec7b94a2871d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89865","aliases":[],"title":"scsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Zero SFP DMA buffer in FRU/I2C bsg handlers\n\nThe FRU and I2C bsg handlers stage their transfer in a DMA_POOL_SIZE\n(256-byte) bounce buffer obtained from dma_pool_alloc(), which does not\nzero the allocation. They initialize only a few leading bytes before\nhanding the buffer to qla2x00_write_sfp().\n\nqla2x00_write_sfp() can override the transfer length with a user-supplied\nvalue:\n\n\tif (len == 1)\n\t\topt |= BIT_0;\n\tif (opt & BIT_0)\n\t\tlen = *sfp;\n\n*sfp is the first byte of the (user-controlled) payload, so len can grow\nup to 255. The device then DMA-reads len bytes from the 256-byte pool\nbuffer. Since only a small prefix was written\n(e.g. MAX_FRU_SIZE == 36 bytes for a FRU version, one byte for a FRU\nstatus register), the hardware reads past the initialized region and\nwrites up to ~219 bytes of stale DMA-pool heap memory to the device\nflash.\n\nAllocate the buffer with dma_pool_zalloc() in all five FRU/I2C handlers\nso any bytes beyond the initialized data are zero rather than stale heap\ncontents.","state":0,"publishedAt":"2026-09-16T10:31:35.758+00:00","modifiedAt":"2026-10-19T08:53:58.579+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/scsi/qla2xxx/qla_bsg.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"a476377a66897549dd49bee319f4df66623417b7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"09703bc7c0be3a7a155b0ff5f21f6765ba3f519c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"97c45c75f5cdec96b1a4fba8b1d55d0dd01af1e8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"84bde5ce4038d9ad811e5c994305bbfcbd7a9f79\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"581590f560b74399151b3cbc88574424c2f3d2dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"b157256c28086c434afd70cc78bf9b4d8caf1276\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"a5501c42256235523c4dddf799f032dfbf4f4c77\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"697a4bc69159c3396035b0506ffa55c4b2d0b1f4\",\n                            \"lessThan\": \"b47d4a1547d9ef21b2e9d1a739fe2204d4be05dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/scsi/qla2xxx/qla_bsg.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/a476377a66897549dd49bee319f4df66623417b7","https://git.kernel.org/stable/c/09703bc7c0be3a7a155b0ff5f21f6765ba3f519c","https://git.kernel.org/stable/c/97c45c75f5cdec96b1a4fba8b1d55d0dd01af1e8","https://git.kernel.org/stable/c/84bde5ce4038d9ad811e5c994305bbfcbd7a9f79","https://git.kernel.org/stable/c/581590f560b74399151b3cbc88574424c2f3d2dc","https://git.kernel.org/stable/c/b157256c28086c434afd70cc78bf9b4d8caf1276","https://git.kernel.org/stable/c/a5501c42256235523c4dddf799f032dfbf4f4c77","https://git.kernel.org/stable/c/b47d4a1547d9ef21b2e9d1a739fe2204d4be05dc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89865","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89865","identifiers":["CVE-2026-89865"]},"retained":false,"historicalAffected":[]}],"coverage":[]}