ghsa-jj48-3v62-2vf9
Vulnerability from github
Published
2024-03-03 00:30
Modified
2024-03-03 00:30
Details
In the Linux kernel, the following vulnerability has been resolved:
x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()
The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range().
With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic.
Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.
{ "affected": [], "aliases": [ "CVE-2023-52576" ], "database_specific": { "cwe_ids": [], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-03-02T22:15:49Z", "severity": null }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()\n\nThe code calling ima_free_kexec_buffer() runs long after the memblock\nallocator has already been torn down, potentially resulting in a use\nafter free in memblock_isolate_range().\n\nWith KASAN or KFENCE, this use after free will result in a BUG\nfrom the idle task, and a subsequent kernel panic.\n\nSwitch ima_free_kexec_buffer() over to memblock_free_late() to avoid\nthat bug.", "id": "GHSA-jj48-3v62-2vf9", "modified": "2024-03-03T00:30:32Z", "published": "2024-03-03T00:30:32Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52576" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b" } ], "schema_version": "1.4.0", "severity": [] }
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