{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-46994", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-27T18:42:55.949Z", "datePublished": "2024-02-28T08:13:19.115Z", "dateUpdated": "2026-05-11T13:45:54.034Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:45:54.034Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: mcp251x: fix resume from sleep before interface was brought up\n\nSince 8ce8c0abcba3 the driver queues work via priv->restart_work when\nresuming after suspend, even when the interface was not previously\nenabled. This causes a null dereference error as the workqueue is only\nallocated and initialized in mcp251x_open().\n\nTo fix this we move the workqueue init to mcp251x_can_probe() as there\nis no reason to do it later and repeat it whenever mcp251x_open() is\ncalled.\n\n[mkl: fix error handling in mcp251x_stop()]" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/can/spi/mcp251x.c" ], "versions": [ { "version": "8ce8c0abcba314e1fe954a1840f6568bf5aef2ef", "lessThan": "eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21", "status": "affected", "versionType": "git" }, { "version": "8ce8c0abcba314e1fe954a1840f6568bf5aef2ef", "lessThan": "6f8f1c27b577de15f69fefce3c502bb6300d825c", "status": "affected", "versionType": "git" }, { "version": "8ce8c0abcba314e1fe954a1840f6568bf5aef2ef", "lessThan": "e1e10a390fd9479209c4d834d916ca5e6d5d396b", "status": "affected", "versionType": "git" }, { "version": "8ce8c0abcba314e1fe954a1840f6568bf5aef2ef", "lessThan": "03c427147b2d3e503af258711af4fc792b89b0af", "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/net/can/spi/mcp251x.c" ], "versions": [ { "version": "5.5", "status": "affected" }, { "version": "0", "lessThan": "5.5", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.38", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.11.22", "lessThanOrEqual": "5.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.12.5", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.10.38" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.11.22" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.12.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.5", "versionEndExcluding": "5.13" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21" }, { "url": "https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c" }, { "url": "https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b" }, { "url": "https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af" } ], "title": "can: mcp251x: fix resume from sleep before interface was brought up", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:38.558Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/6f8f1c27b577de15f69fefce3c502bb6300d825c", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/e1e10a390fd9479209c4d834d916ca5e6d5d396b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/03c427147b2d3e503af258711af4fc792b89b0af", "tags": [ "x_transferred" ] } ] }, { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2021-46994", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:00:58.367712Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:38.479Z" } } ] } }