cve-2021-47520
Vulnerability from cvelistv5
Published
2024-05-24 15:09
Modified
2024-11-04 12:07
Severity ?
EPSS score ?
Summary
can: pch_can: pch_can_rx_normal: fix use after free
References
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2021-47520", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-06-17T18:03:24.271974Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-06-17T18:03:39.525Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-08-04T05:39:59.800Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7" }, { "tags": [ "x_transferred" ], "url": "https://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "drivers/net/can/pch_can.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "bafe343a885c", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "3a3c46e2eff0", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "affbad02bf80", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "3e193ef4e0a3", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "abb4eff3dcd2", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "703dde112021", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "6c73fc931658", "status": "affected", "version": "b21d18b51b31", "versionType": "git" }, { "lessThan": "94cddf1e9227", "status": "affected", "version": "b21d18b51b31", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "drivers/net/can/pch_can.c" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "2.6.37" }, { "lessThan": "2.6.37", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "4.4.*", "status": "unaffected", "version": "4.4.295", "versionType": "semver" }, { "lessThanOrEqual": "4.9.*", "status": "unaffected", "version": "4.9.293", "versionType": "semver" }, { "lessThanOrEqual": "4.14.*", "status": "unaffected", "version": "4.14.258", "versionType": "semver" }, { "lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.221", "versionType": "semver" }, { "lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.165", "versionType": "semver" }, { "lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.85", "versionType": "semver" }, { "lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.8", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "5.16", "versionType": "original_commit_for_fix" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: pch_can: pch_can_rx_normal: fix use after free\n\nAfter calling netif_receive_skb(skb), dereferencing skb is unsafe.\nEspecially, the can_frame cf which aliases skb memory is dereferenced\njust after the call netif_receive_skb(skb).\n\nReordering the lines solves the issue." } ], "providerMetadata": { "dateUpdated": "2024-11-04T12:07:31.177Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/bafe343a885c70dddf358379cf0b2a1c07355d8d" }, { "url": "https://git.kernel.org/stable/c/3a3c46e2eff0577454860a203be1a8295f4acb76" }, { "url": "https://git.kernel.org/stable/c/affbad02bf80380a7403885b9fe4a1587d1bb4f3" }, { "url": "https://git.kernel.org/stable/c/3e193ef4e0a3f5bf92ede83ef214cb09d01b00aa" }, { "url": "https://git.kernel.org/stable/c/abb4eff3dcd2e583060082a18a8dbf31f02689d4" }, { "url": "https://git.kernel.org/stable/c/703dde112021c93d6e89443c070e7dbd4dea612e" }, { "url": "https://git.kernel.org/stable/c/6c73fc931658d8cbc8a1714b326cb31eb71d16a7" }, { "url": "https://git.kernel.org/stable/c/94cddf1e9227a171b27292509d59691819c458db" } ], "title": "can: pch_can: pch_can_rx_normal: fix use after free", "x_generator": { "engine": "bippy-9e1c9544281a" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2021-47520", "datePublished": "2024-05-24T15:09:33.796Z", "dateReserved": "2024-05-24T15:02:54.824Z", "dateUpdated": "2024-11-04T12:07:31.177Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-47520\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-24T15:15:14.003\",\"lastModified\":\"2024-06-10T18:42:47.233\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: pch_can: 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Especialmente, el can_frame cf que alias la memoria skb se desreferencia justo despu\u00e9s de la llamada netif_receive_skb(skb). 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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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