ghsa-78xp-xvw2-6rw6
Vulnerability from github
Published
2025-04-17 18:31
Modified
2025-04-17 21:31
Severity ?
VLAI Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
can: dev: can_restart: fix use after free bug
After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the netif_rx_ni() in: stats->rx_bytes += cf->len;
Reordering the lines solves the issue.
{ "affected": [], "aliases": [ "CVE-2021-47668" ], "database_specific": { "cwe_ids": [ "CWE-416" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2025-04-17T18:15:43Z", "severity": "HIGH" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: dev: can_restart: fix use after free bug\n\nAfter calling netif_rx_ni(skb), dereferencing skb is unsafe.\nEspecially, the can_frame cf which aliases skb memory is accessed\nafter the netif_rx_ni() in:\n stats-\u003erx_bytes += cf-\u003elen;\n\nReordering the lines solves the issue.", "id": "GHSA-78xp-xvw2-6rw6", "modified": "2025-04-17T21:31:03Z", "published": "2025-04-17T18:31:22Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47668" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/03f16c5075b22c8902d2af739969e878b0879c94" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/08ab951787098ae0b6c0364aeea7a8138226f234" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/260925a0b7d2da5449f8ecfd02c1405e0c8a45b8" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/593c072b7b3c4d7044416eb039d9ad706bedd67a" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/92668d28c7e6a7a2ba07df287669ffcdf650c421" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/ac48ef15826e83f4206c47add61072e8fc76d328" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/bbc6847b9b8978b520f62fbc7c68c54ef0f8d282" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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