{"id":49616,"date":"2025-06-08T05:52:48","date_gmt":"2025-06-08T05:52:48","guid":{"rendered":""},"modified":"2025-06-13T23:40:19","modified_gmt":"2025-06-14T05:40:19","slug":"cve-2022-49846-linux-kernel-slab-out-of-bounds-write-vulnerability","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2022-49846-linux-kernel-slab-out-of-bounds-write-vulnerability\/","title":{"rendered":"<strong>CVE-2022-49846: Linux Kernel Slab-out-of-bounds Write Vulnerability<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>A serious vulnerability has been identified in the Linux kernel, specifically in the Universal Disk Format (UDF) file system module. The issue, identified as CVE-2022-49846, could potentially lead to system compromise or data leakage if successfully exploited. As the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21879-the-linux-kernel-btrfs-use-after-free-vulnerability\/\"  data-wpil-monitor-id=\"56537\">Linux kernel<\/a> is widely used in numerous servers, desktops, and embedded systems, this vulnerability may have far-reaching impacts. It is of crucial importance for system administrators and IT <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-42598-critical-security-vulnerability-in-seiko-epson-printer-drivers-for-windows-os\/\"  data-wpil-monitor-id=\"57606\">security professionals to understand the threat posed by this vulnerability<\/a> and take necessary mitigation steps.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2022-49846<br \/>\nSeverity: High (7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32309-potential-system-compromise-due-to-remote-file-inclusion-in-php-program\/\"  data-wpil-monitor-id=\"56446\">System compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3961311314\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21893-critical-linux-kernel-vulnerability-in-key-put-function\/\"  data-wpil-monitor-id=\"56821\">Linux Kernel<\/a> | Versions prior to 6.1.0-rc2<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability arises from a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27010-path-traversal-vulnerability-in-bslthemes-tastyc-leading-to-php-local-file-inclusion\/\"  data-wpil-monitor-id=\"55836\">slab-out-of-bounds write<\/a> bug in the `udf_find_entry()` function in the UDF file system module of the Linux kernel. This flaw allows local attackers to cause a denial of service (system crash) or possibly <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-48828-arbitrary-php-code-execution-in-vbulletin-via-template-conditionals\/\"  data-wpil-monitor-id=\"55718\">execute arbitrary code via<\/a> crafted system calls that trigger a data race condition.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1177797143\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>The following is a conceptual example of how the vulnerability might be exploited. An attacker could potentially use a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1277-memory-corruption-vulnerability-in-autodesk-applications-through-malicious-pdf-files\/\"  data-wpil-monitor-id=\"57483\">maliciously crafted system call to trigger the vulnerability<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\">$ sys_creat(&quot;\/mnt\/udf_mount_point\/file&quot;, 0644);<\/code><\/pre>\n<p>In the above command, `\/mnt\/udf_mount_point\/file` refers to a file in the UDF <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46584-improper-authentication-logic-vulnerability-in-file-system-module\/\"  data-wpil-monitor-id=\"58017\">file system<\/a>. In the context of this vulnerability, the `sys_creat()` system call can trigger the vulnerable `udf_find_entry()` function in the UDF module, leading to an out-of-bounds write and potentially allowing an attacker to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3357-arbitrary-code-execution-vulnerability-in-ibm-tivoli-monitoring\/\"  data-wpil-monitor-id=\"56445\">execute arbitrary code<\/a>, cause a denial of service, or leak sensitive data.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p>Users are advised to apply the latest patches provided by the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2022-49840-in-depth-analysis-of-linux-kernel-vulnerability-and-its-mitigation\/\"  data-wpil-monitor-id=\"57482\">Linux kernel<\/a> developers. If patches cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. However, these measures do not eliminate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5100-a-double-free-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"56822\">vulnerability but only help in detecting potential<\/a> exploit attempts. Therefore, patching the affected systems should be a priority.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview A serious vulnerability has been identified in the Linux kernel, specifically in the Universal Disk Format (UDF) file system module. The issue, identified as CVE-2022-49846, could potentially lead to system compromise or data leakage if successfully exploited. As the Linux kernel is widely used in numerous servers, desktops, and embedded systems, this vulnerability may [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[88],"product":[95],"attack_vector":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-49616","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-linux","product-linux-kernel","attack_vector-buffer-overflow","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49616","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=49616"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49616\/revisions"}],"predecessor-version":[{"id":51762,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/49616\/revisions\/51762"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=49616"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=49616"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=49616"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=49616"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=49616"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=49616"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=49616"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=49616"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=49616"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}