{"id":"CVE-2026-89846","summary":"scsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Bound rsp_info_len to avoid OOB sense-data read\n\nIn qla2x00_status_entry(), the FWI2 status path advances sense_data and\nshrinks par_sense_len by rsp_info_len:\n\n\tif (IS_FWI2_CAPABLE(ha)) {\n\t\tsense_data += rsp_info_len;\n\t\tpar_sense_len -= rsp_info_len;\n\t}\n\nrsp_info_len is a 32-bit value taken directly from the target's FCP\nresponse (sf.rsp_data_len), while par_sense_len is the IOCB data area\nsize (28 bytes for 24xx, 60 bytes for 29xx). A hostile or buggy target\nreporting an rsp_info_len larger than par_sense_len makes the unsigned\nsubtraction underflow to a huge value and advances sense_data out of\nbounds.\n\nThe underflowed par_sense_len then defeats the cap in\nqla2x00_handle_sense():\n\n\tif (sense_len \u003e par_sense_len)\n\t\tsense_len = par_sense_len;\n\tmemcpy(cp-\u003esense_buffer, sense_data, sense_len);\n\nso the memcpy reads up to SCSI_SENSE_BUFFERSIZE bytes from the\nout-of-bounds sense_data pointer, leaking adjacent response-ring/heap\nmemory into the command's sense buffer.\n\nClamp rsp_info_len to par_sense_len before the subtraction so\npar_sense_len can never underflow and sense_data stays within the IOCB\ndata area. The fix sits before the comp_status switch, covering both\nqla2x00_handle_sense() call sites.","modified":"2026-09-18T03:48:33.637473486Z","published":"2026-09-16T10:31:20.306Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89846.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/125b12861c726e58448bb95d55b04851fb131d1f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b08c0cb110a1fba92f99d655020198489699815"},{"type":"WEB","url":"https://git.kernel.org/stable/c/be75ab791c9b3baca66c70ce03443afebc83acda"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d7f7746ff031ae45724881261804f4bf5317c985"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e57ace988bda5693f7b3645f652ea4b4220870ee"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ebc41dfc59d190956e0113e8bd90c28f6f21e8b9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f6e8977bce887481b2b2b0e2e14a791270741cfb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89846.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89846"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5544213be7b4fb693730106a6d70a8cc1aa7cdf6"},{"fixed":"125b12861c726e58448bb95d55b04851fb131d1f"},{"fixed":"e57ace988bda5693f7b3645f652ea4b4220870ee"},{"fixed":"6b08c0cb110a1fba92f99d655020198489699815"},{"fixed":"be75ab791c9b3baca66c70ce03443afebc83acda"},{"fixed":"ebc41dfc59d190956e0113e8bd90c28f6f21e8b9"},{"fixed":"d7f7746ff031ae45724881261804f4bf5317c985"},{"fixed":"f6e8977bce887481b2b2b0e2e14a791270741cfb"},{"fixed":"ca6d880d6c70cb7946e7b3e05d7285f271b6d99e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89846.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.36"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89846.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}