{
  "threat_severity" : "Low",
  "public_date" : "2025-02-26T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: fbdev: defio: fix the pagelist corruption",
    "id" : "2347746",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2347746"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.4",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-99",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nfbdev: defio: fix the pagelist corruption\nEasily hit the below list corruption:\n==\nlist_add corruption. prev->next should be next (ffffffffc0ceb090), but\nwas ffffec604507edc8. (prev=ffffec604507edc8).\nWARNING: CPU: 65 PID: 3959 at lib/list_debug.c:26\n__list_add_valid+0x53/0x80\nCPU: 65 PID: 3959 Comm: fbdev Tainted: G     U\nRIP: 0010:__list_add_valid+0x53/0x80\nCall Trace:\n<TASK>\nfb_deferred_io_mkwrite+0xea/0x150\ndo_page_mkwrite+0x57/0xc0\ndo_wp_page+0x278/0x2f0\n__handle_mm_fault+0xdc2/0x1590\nhandle_mm_fault+0xdd/0x2c0\ndo_user_addr_fault+0x1d3/0x650\nexc_page_fault+0x77/0x180\n? asm_exc_page_fault+0x8/0x30\nasm_exc_page_fault+0x1e/0x30\nRIP: 0033:0x7fd98fc8fad1\n==\nFigure out the race happens when one process is adding &page->lru into\nthe pagelist tail in fb_deferred_io_mkwrite(), another process is\nre-initializing the same &page->lru in fb_deferred_io_fault(), which is\nnot protected by the lock.\nThis fix is to init all the page lists one time during initialization,\nit not only fixes the list corruption, but also avoids INIT_LIST_HEAD()\nredundantly.\nV2: change \"int i\" to \"unsigned int i\" (Geert Uytterhoeven)" ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-05-16T00:00:00Z",
    "advisory" : "RHSA-2023:2951",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-477.10.1.el8_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-05-09T00:00:00Z",
    "advisory" : "RHSA-2023:2458",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-284.11.1.el9_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-05-09T00:00:00Z",
    "advisory" : "RHSA-2023:2458",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-284.11.1.el9_2"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-49511\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49511\nhttps://lore.kernel.org/linux-cve-announce/2025022609-CVE-2022-49511-100a@gregkh/T" ],
  "name" : "CVE-2022-49511",
  "csaw" : false
}