ghsa-w5g2-4rxc-h7x8
Vulnerability from github
Published
2024-03-25 12:30
Modified
2024-05-16 21:31
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
Commit de144ff4234f changes _pnfs_return_layout() to call pnfs_mark_matching_lsegs_return() passing NULL as the struct pnfs_layout_range argument. Unfortunately, pnfs_mark_matching_lsegs_return() doesn't check if we have a value here before dereferencing it, causing an oops.
I'm able to hit this crash consistently when running connectathon basic tests on NFS v4.1/v4.2 against Ontap.
{ "affected": [], "aliases": [ "CVE-2021-47179" ], "database_specific": { "cwe_ids": [ "CWE-476" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-03-25T10:15:09Z", "severity": "MODERATE" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn\u0027t check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI\u0027m able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap.", "id": "GHSA-w5g2-4rxc-h7x8", "modified": "2024-05-16T21:31:56Z", "published": "2024-03-25T12:30:52Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47179" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "type": "CVSS_V3" } ] }
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Sightings
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