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{"bugzilla": {"description": "kernel: video: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup", "id": "2347942", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2347942"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nvideo: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup\nCommit b3c9a924aab6 (\"fbdev: vesafb: Cleanup fb_info in .fb_destroy rather\nthan .remove\") fixed a use-after-free error due the vesafb driver freeing\nthe fb_info in the .remove handler instead of doing it in .fb_destroy.\nThis can happen if the .fb_destroy callback is executed after the .remove\ncallback, since the former tries to access a pointer freed by the latter.\nBut that change didn't take into account that another possible scenario is\nthat .fb_destroy is called before the .remove callback. For example, if no\nprocess has the fbdev chardev opened by the time the driver is removed.\nIf that's the case, fb_info will be freed when unregister_framebuffer() is\ncalled, making the fb_info pointer accessed in vesafb_remove() after that\nto no longer be valid.\nTo prevent that, move the expression containing the info->par to happen\nbefore the unregister_framebuffer() function call."], "name": "CVE-2022-49419", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49419\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49419\nhttps://lore.kernel.org/linux-cve-announce/2025022654-CVE-2022-49419-fc59@gregkh/T"], "threat_severity": "Moderate"}

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