{ "dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": { "cveId": "CVE-2021-46959", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-27T18:42:55.939Z", "datePublished": "2024-02-29T22:31:12.304Z", "dateUpdated": "2024-09-11T17:33:46.810Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T04:59:33.597Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: Fix use-after-free with devm_spi_alloc_*\n\nWe can't rely on the contents of the devres list during\nspi_unregister_controller(), as the list is already torn down at the\ntime we perform devres_find() for devm_spi_release_controller. This\ncauses devices registered with devm_spi_alloc_{master,slave}() to be\nmistakenly identified as legacy, non-devm managed devices and have their\nreference counters decremented below 0.\n\n------------[ cut here ]------------\nWARNING: CPU: 1 PID: 660 at lib/refcount.c:28 refcount_warn_saturate+0x108/0x174\n[] (refcount_warn_saturate) from [] (kobject_put+0x90/0x98)\n[] (kobject_put) from [] (put_device+0x20/0x24)\n r4:b6700140\n[] (put_device) from [] (devm_spi_release_controller+0x3c/0x40)\n[] (devm_spi_release_controller) from [] (release_nodes+0x84/0xc4)\n r5:b6700180 r4:b6700100\n[] (release_nodes) from [] (devres_release_all+0x5c/0x60)\n r8:b1638c54 r7:b117ad94 r6:b1638c10 r5:b117ad94 r4:b163dc10\n[] (devres_release_all) from [] (__device_release_driver+0x144/0x1ec)\n r5:b117ad94 r4:b163dc10\n[] (__device_release_driver) from [] (device_driver_detach+0x84/0xa0)\n r9:00000000 r8:00000000 r7:b117ad94 r6:b163dc54 r5:b1638c10 r4:b163dc10\n[] (device_driver_detach) from [] (unbind_store+0xe4/0xf8)\n\nInstead, determine the devm allocation state as a flag on the\ncontroller which is guaranteed to be stable during cleanup." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/spi/spi.c", "include/linux/spi/spi.h" ], "versions": [ { "version": "a4add022c155", "lessThan": "62bb2c7f2411", "status": "affected", "versionType": "git" }, { "version": "0870525cf94b", "lessThan": "8bf96425c90f", "status": "affected", "versionType": "git" }, { "version": "8c45a1c6c951", "lessThan": "8e029707f50a", "status": "affected", "versionType": "git" }, { "version": "234b432c7b61", "lessThan": "28a5529068c5", "status": "affected", "versionType": "git" }, { "version": "3e04a4976add", "lessThan": "001c8e83646a", "status": "affected", "versionType": "git" }, { "version": "5e844cc37a5c", "lessThan": "c7fabe372a90", "status": "affected", "versionType": "git" }, { "version": "5e844cc37a5c", "lessThan": "cee78aa24578", "status": "affected", "versionType": "git" }, { "version": "5e844cc37a5c", "lessThan": "8735248ebb91", "status": "affected", "versionType": "git" }, { "version": "5e844cc37a5c", "lessThan": "794aaf01444d", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/spi/spi.c", "include/linux/spi/spi.h" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "custom" }, { "version": "4.4.271", "lessThanOrEqual": "4.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.9.271", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.14.233", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.191", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.119", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.37", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.11.21", "lessThanOrEqual": "5.11.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.12.4", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815" }, { "url": "https://git.kernel.org/stable/c/8bf96425c90f5c1dcf3b7b9df568019a1d4b8a0e" }, { "url": "https://git.kernel.org/stable/c/8e029707f50a82c53172359c686b2536ab54e58c" }, { "url": "https://git.kernel.org/stable/c/28a5529068c51cdf0295ab1e11a99a3a909a03e4" }, { "url": "https://git.kernel.org/stable/c/001c8e83646ad3b847b18f6ac55a54367d917d74" }, { "url": "https://git.kernel.org/stable/c/c7fabe372a9031acd00498bc718ce27c253abfd1" }, { "url": "https://git.kernel.org/stable/c/cee78aa24578edac8cf00513dca618c0acc17cd7" }, { "url": "https://git.kernel.org/stable/c/8735248ebb918d25427965f0db07939ed0473ec6" }, { "url": "https://git.kernel.org/stable/c/794aaf01444d4e765e2b067cba01cc69c1c68ed9" } ], "title": "spi: Fix use-after-free with devm_spi_alloc_*", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:17:42.989Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/62bb2c7f2411a0045c24831f11ecacfc35610815", "tags": [ "x_transferred" ] }, { "url": 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"CVE-2021-46959", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T15:57:07.725975Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:46.810Z" } } ] } }