ghsa-jfp4-pv53-rv88
Vulnerability from github
Published
2024-11-07 12:30
Modified
2024-11-13 15:31
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix possible double free in smb2_set_ea()
Clang static checker(scan-build) warning: fs/smb/client/smb2ops.c:1304:2: Attempt to free released memory. 1304 | kfree(ea); | ^~~~~~~~~
There is a double free in such case: 'ea is initialized to NULL' -> 'first successful memory allocation for ea' -> 'something failed, goto sea_exit' -> 'first memory release for ea' -> 'goto replay_again' -> 'second goto sea_exit before allocate memory for ea' -> 'second memory release for ea resulted in double free'.
Re-initialie 'ea' to NULL near to the replay_again label, it can fix this double free problem.
{ "affected": [], "aliases": [ "CVE-2024-50152" ], "database_specific": { "cwe_ids": [ "CWE-415" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-11-07T10:15:06Z", "severity": "MODERATE" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix possible double free in smb2_set_ea()\n\nClang static checker(scan-build) warning\uff1a\nfs/smb/client/smb2ops.c:1304:2: Attempt to free released memory.\n 1304 | kfree(ea);\n | ^~~~~~~~~\n\nThere is a double free in such case:\n\u0027ea is initialized to NULL\u0027 -\u003e \u0027first successful memory allocation for\nea\u0027 -\u003e \u0027something failed, goto sea_exit\u0027 -\u003e \u0027first memory release for ea\u0027\n-\u003e \u0027goto replay_again\u0027 -\u003e \u0027second goto sea_exit before allocate memory\nfor ea\u0027 -\u003e \u0027second memory release for ea resulted in double free\u0027.\n\nRe-initialie \u0027ea\u0027 to NULL near to the replay_again label, it can fix this\ndouble free problem.", "id": "GHSA-jfp4-pv53-rv88", "modified": "2024-11-13T15:31:37Z", "published": "2024-11-07T12:30:35Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50152" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/19ebc1e6cab334a8193398d4152deb76019b5d34" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/b1813c220b76f60b1727984794377c4aa849d4c1" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/c9f758ecf2562dfdd4adf12c22921b5de8366123" } ], "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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