{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2023-52492", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-20T12:30:33.304Z", "datePublished": "2024-02-29T15:52:10.499Z", "dateUpdated": "2026-05-11T19:28:23.034Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:28:23.034Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: fix NULL pointer in channel unregistration function\n\n__dma_async_device_channel_register() can fail. In case of failure,\nchan->local is freed (with free_percpu()), and chan->local is nullified.\nWhen dma_async_device_unregister() is called (because of managed API or\nintentionally by DMA controller driver), channels are unconditionally\nunregistered, leading to this NULL pointer:\n[ 1.318693] Unable to handle kernel NULL pointer dereference at virtual address 00000000000000d0\n[...]\n[ 1.484499] Call trace:\n[ 1.486930] device_del+0x40/0x394\n[ 1.490314] device_unregister+0x20/0x7c\n[ 1.494220] __dma_async_device_channel_unregister+0x68/0xc0\n\nLook at dma_async_device_register() function error path, channel device\nunregistration is done only if chan->local is not NULL.\n\nThen add the same condition at the beginning of\n__dma_async_device_channel_unregister() function, to avoid NULL pointer\nissue whatever the API used to reach this function." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/dmaengine.c" ], "versions": [ { "version": "d2fb0a0438384fee08a418025f743913020033ce", "lessThan": "9de69732dde4e443c1c7f89acbbed2c45a6a8e17", "status": "affected", "versionType": "git" }, { "version": "d2fb0a0438384fee08a418025f743913020033ce", "lessThan": "047fce470412ab64cb7345f9ff5d06919078ad79", "status": "affected", "versionType": "git" }, { "version": "d2fb0a0438384fee08a418025f743913020033ce", "lessThan": "2ab32986a0b9e329eb7f8f04dd57cc127f797c08", "status": "affected", "versionType": "git" }, { "version": "d2fb0a0438384fee08a418025f743913020033ce", "lessThan": "7f0ccfad2031eddcc510caf4e57f2d4aa2d8a50b", "status": "affected", "versionType": "git" }, { "version": "d2fb0a0438384fee08a418025f743913020033ce", "lessThan": "9263fd2a63487c6d04cbb7b74a48fb12e1e352d0", "status": "affected", "versionType": "git" }, { "version": "d2fb0a0438384fee08a418025f743913020033ce", "lessThan": "f5c24d94512f1b288262beda4d3dcb9629222fc7", "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/dma/dmaengine.c" ], "versions": [ { "version": "5.6", "status": "affected" }, { "version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.76", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.15", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.3", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "5.6", "versionEndExcluding": "5.10.210" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "5.15.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.1.76" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.8" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9de69732dde4e443c1c7f89acbbed2c45a6a8e17" }, { "url": "https://git.kernel.org/stable/c/047fce470412ab64cb7345f9ff5d06919078ad79" }, { "url": "https://git.kernel.org/stable/c/2ab32986a0b9e329eb7f8f04dd57cc127f797c08" }, { "url": "https://git.kernel.org/stable/c/7f0ccfad2031eddcc510caf4e57f2d4aa2d8a50b" }, { "url": "https://git.kernel.org/stable/c/9263fd2a63487c6d04cbb7b74a48fb12e1e352d0" }, { "url": "https://git.kernel.org/stable/c/f5c24d94512f1b288262beda4d3dcb9629222fc7" } ], "title": "dmaengine: fix NULL pointer in channel unregistration function", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-476", "lang": "en", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2024-03-11T18:32:39.400118Z", "id": "CVE-2023-52492", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-11-06T19:02:52.592Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:03:19.973Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/9de69732dde4e443c1c7f89acbbed2c45a6a8e17", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/047fce470412ab64cb7345f9ff5d06919078ad79", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/2ab32986a0b9e329eb7f8f04dd57cc127f797c08", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/7f0ccfad2031eddcc510caf4e57f2d4aa2d8a50b", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/9263fd2a63487c6d04cbb7b74a48fb12e1e352d0", "tags": [ "x_transferred" ] }, { "url": "https://git.kernel.org/stable/c/f5c24d94512f1b288262beda4d3dcb9629222fc7", "tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.2" }