mirror of
https://github.com/CVEProject/cvelist.git
synced 2025-08-04 08:44:25 +00:00
136 lines
8.0 KiB
JSON
136 lines
8.0 KiB
JSON
{
|
|
"data_version": "4.0",
|
|
"data_type": "CVE",
|
|
"data_format": "MITRE",
|
|
"CVE_data_meta": {
|
|
"ID": "CVE-2024-26906",
|
|
"ASSIGNER": "cve@kernel.org",
|
|
"STATE": "PUBLIC"
|
|
},
|
|
"description": {
|
|
"description_data": [
|
|
{
|
|
"lang": "eng",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()\n\nWhen trying to use copy_from_kernel_nofault() to read vsyscall page\nthrough a bpf program, the following oops was reported:\n\n BUG: unable to handle page fault for address: ffffffffff600000\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 3231067 P4D 3231067 PUD 3233067 PMD 3235067 PTE 0\n Oops: 0000 [#1] PREEMPT SMP PTI\n CPU: 1 PID: 20390 Comm: test_progs ...... 6.7.0+ #58\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......\n RIP: 0010:copy_from_kernel_nofault+0x6f/0x110\n ......\n Call Trace:\n <TASK>\n ? copy_from_kernel_nofault+0x6f/0x110\n bpf_probe_read_kernel+0x1d/0x50\n bpf_prog_2061065e56845f08_do_probe_read+0x51/0x8d\n trace_call_bpf+0xc5/0x1c0\n perf_call_bpf_enter.isra.0+0x69/0xb0\n perf_syscall_enter+0x13e/0x200\n syscall_trace_enter+0x188/0x1c0\n do_syscall_64+0xb5/0xe0\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\n </TASK>\n ......\n ---[ end trace 0000000000000000 ]---\n\nThe oops is triggered when:\n\n1) A bpf program uses bpf_probe_read_kernel() to read from the vsyscall\npage and invokes copy_from_kernel_nofault() which in turn calls\n__get_user_asm().\n\n2) Because the vsyscall page address is not readable from kernel space,\na page fault exception is triggered accordingly.\n\n3) handle_page_fault() considers the vsyscall page address as a user\nspace address instead of a kernel space address. This results in the\nfix-up setup by bpf not being applied and a page_fault_oops() is invoked\ndue to SMAP.\n\nConsidering handle_page_fault() has already considered the vsyscall page\naddress as a userspace address, fix the problem by disallowing vsyscall\npage read for copy_from_kernel_nofault()."
|
|
}
|
|
]
|
|
},
|
|
"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",
|
|
"version_value": "6e4694e65b6d"
|
|
},
|
|
{
|
|
"version_value": "not down converted",
|
|
"x_cve_json_5_version_data": {
|
|
"versions": [
|
|
{
|
|
"version": "5.10.214",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.153",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.83",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.23",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.7.11",
|
|
"lessThanOrEqual": "6.7.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.8",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
],
|
|
"defaultStatus": "affected"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
}
|
|
},
|
|
"references": {
|
|
"reference_data": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/6e4694e65b6db4c3de125115dd4f55848cc48381",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/6e4694e65b6db4c3de125115dd4f55848cc48381"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/e8a67fe34b76a49320b33032228a794f40b0316b",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/e8a67fe34b76a49320b33032228a794f40b0316b"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f175de546a3eb77614d94d4c02550181c0a8493e",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/f175de546a3eb77614d94d4c02550181c0a8493e"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/57f78c46f08198e1be08ffe99c4c1ccc12855bf5",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/57f78c46f08198e1be08ffe99c4c1ccc12855bf5"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/29bd6f86904682adafe9affbc7f79b14defcaff8",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/29bd6f86904682adafe9affbc7f79b14defcaff8"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/32019c659ecfe1d92e3bf9fcdfbb11a7c70acd58",
|
|
"refsource": "MISC",
|
|
"name": "https://git.kernel.org/stable/c/32019c659ecfe1d92e3bf9fcdfbb11a7c70acd58"
|
|
}
|
|
]
|
|
},
|
|
"generator": {
|
|
"engine": "bippy-9e1c9544281a"
|
|
}
|
|
} |