ghsa-fcg7-9x44-gx43
Vulnerability from github
Published
2023-07-21 21:30
Modified
2024-08-22 21:31
Severity ?
Details
A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.
If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.
We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.
{ affected: [], aliases: [ "CVE-2023-3776", ], database_specific: { cwe_ids: [ "CWE-416", ], github_reviewed: false, github_reviewed_at: null, nvd_published_at: "2023-07-21T21:15:11Z", severity: "HIGH", }, details: "A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation.\n\nIf tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.\n\n", id: "GHSA-fcg7-9x44-gx43", modified: "2024-08-22T21:31:27Z", published: "2023-07-21T21:30:33Z", references: [ { type: "ADVISORY", url: "https://nvd.nist.gov/vuln/detail/CVE-2023-3776", }, { type: "WEB", url: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f", }, { type: "WEB", url: "https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f", }, { type: "WEB", url: "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html", }, { type: "WEB", url: "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html", }, { type: "WEB", url: "https://security.netapp.com/advisory/ntap-20240202-0003", }, { type: "WEB", url: "https://www.debian.org/security/2023/dsa-5480", }, { type: "WEB", url: "https://www.debian.org/security/2023/dsa-5492", }, { type: "WEB", url: "http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html", }, { type: "WEB", url: "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html", }, ], 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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Nomenclature
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