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{
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"data_version" : "4.0" ,
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"data_type" : "CVE" ,
"data_format" : "MITRE" ,
"CVE_data_meta" : {
"ID" : "CVE-2024-49924" ,
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"ASSIGNER" : "cve@kernel.org" ,
"STATE" : "PUBLIC"
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} ,
"description" : {
"description_data" : [
{
"lang" : "eng" ,
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"value" : "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: pxafb: Fix possible use after free in pxafb_task()\n\nIn the pxafb_probe function, it calls the pxafb_init_fbinfo function,\nafter which &fbi->task is associated with pxafb_task. Moreover,\nwithin this pxafb_init_fbinfo function, the pxafb_blank function\nwithin the &pxafb_ops struct is capable of scheduling work.\n\nIf we remove the module which will call pxafb_remove to make cleanup,\nit will call unregister_framebuffer function which can call\ndo_unregister_framebuffer to free fbi->fb through\nput_fb_info(fb_info), while the work mentioned above will be used.\nThe sequence of operations that may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | pxafb_task\npxafb_remove |\nunregister_framebuffer(info) |\ndo_unregister_framebuffer(fb_info) |\nput_fb_info(fb_info) |\n// free fbi->fb | set_ctrlr_state(fbi, state)\n | __pxafb_lcd_power(fbi, 0)\n | fbi->lcd_power(on, &fbi->fb.var)\n | //use fbi->fb\n\nFix it by ensuring that the work is canceled before proceeding\nwith the cleanup in pxafb_remove.\n\nNote that only root user can remove the driver at runtime."
}
]
} ,
"problemtype" : {
"problemtype_data" : [
{
"description" : [
{
"lang" : "eng" ,
"value" : "n/a"
}
]
}
]
} ,
"affects" : {
"vendor" : {
"vendor_data" : [
{
"vendor_name" : "Linux" ,
"product" : {
"product_data" : [
{
"product_name" : "Linux" ,
"version" : {
"version_data" : [
{
"version_affected" : "<" ,
"version_name" : "1da177e4c3f4" ,
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"version_value" : "e657fa2df442"
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} ,
{
"version_value" : "not down converted" ,
"x_cve_json_5_version_data" : {
"versions" : [
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{
"version" : "4.19.323" ,
"lessThanOrEqual" : "4.19.*" ,
"status" : "unaffected" ,
"versionType" : "semver"
} ,
{
"version" : "5.4.285" ,
"lessThanOrEqual" : "5.4.*" ,
"status" : "unaffected" ,
"versionType" : "semver"
} ,
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{
"version" : "5.10.227" ,
"lessThanOrEqual" : "5.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "5.15.168" ,
"lessThanOrEqual" : "5.15.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.1.113" ,
"lessThanOrEqual" : "6.1.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.6.55" ,
"lessThanOrEqual" : "6.6.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.10.14" ,
"lessThanOrEqual" : "6.10.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
"version" : "6.11.3" ,
"lessThanOrEqual" : "6.11.*" ,
"status" : "unaffected" ,
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"versionType" : "semver"
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} ,
{
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"version" : "6.12" ,
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"lessThanOrEqual" : "*" ,
"status" : "unaffected" ,
"versionType" : "original_commit_for_fix"
}
] ,
"defaultStatus" : "affected"
}
}
]
}
}
]
}
}
]
}
} ,
"references" : {
"reference_data" : [
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{
"url" : "https://git.kernel.org/stable/c/e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd"
} ,
{
"url" : "https://git.kernel.org/stable/c/6d0a07f68b66269e167def6c0b90a219cd3e7473" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/6d0a07f68b66269e167def6c0b90a219cd3e7473"
} ,
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{
"url" : "https://git.kernel.org/stable/c/e6897e299f57b103e999e62010b88e363b3eebae" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/e6897e299f57b103e999e62010b88e363b3eebae"
} ,
{
"url" : "https://git.kernel.org/stable/c/4cda484e584be34d55ee17436ebf7ad11922b97a" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/4cda484e584be34d55ee17436ebf7ad11922b97a"
} ,
{
"url" : "https://git.kernel.org/stable/c/3c0d416eb4bef705f699213cee94bf54b6acdacd" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/3c0d416eb4bef705f699213cee94bf54b6acdacd"
} ,
{
"url" : "https://git.kernel.org/stable/c/fdda354f60a576d52dcf90351254714681df4370" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/fdda354f60a576d52dcf90351254714681df4370"
} ,
{
"url" : "https://git.kernel.org/stable/c/aaadc0cb05c999ccd8898a03298b7e5c31509b08" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/aaadc0cb05c999ccd8898a03298b7e5c31509b08"
} ,
{
"url" : "https://git.kernel.org/stable/c/a3a855764dbacbdb1cc51e15dc588f2d21c93e0e" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/a3a855764dbacbdb1cc51e15dc588f2d21c93e0e"
} ,
{
"url" : "https://git.kernel.org/stable/c/4a6921095eb04a900e0000da83d9475eb958e61e" ,
"refsource" : "MISC" ,
"name" : "https://git.kernel.org/stable/c/4a6921095eb04a900e0000da83d9475eb958e61e"
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}
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