ghsa-8vjx-3vgx-66mx
Vulnerability from github
Published
2023-01-11 15:30
Modified
2023-01-19 15:30
Severity ?
Details
There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above
{ "affected": [], "aliases": [ "CVE-2022-4696" ], "database_specific": { "cwe_ids": [ "CWE-416", "CWE-763" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2023-01-11T13:15:00Z", "severity": "HIGH" }, "details": "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won\u0027t use current-\u003ensproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current-\u003ensproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above", "id": "GHSA-8vjx-3vgx-66mx", "modified": "2023-01-19T15:30:31Z", "published": "2023-01-11T15:30:42Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-4696" }, { "type": "WEB", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y\u0026id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a" }, { "type": "WEB", "url": "https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a" } ], "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
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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.