mirror of
https://github.com/CVEProject/cvelist.git
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102 lines
5.5 KiB
JSON
102 lines
5.5 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2024-56612",
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/gup: handle NULL pages in unpin_user_pages()\n\nThe recent addition of \"pofs\" (pages or folios) handling to gup has a\nflaw: it assumes that unpin_user_pages() handles NULL pages in the pages**\narray. That's not the case, as I discovered when I ran on a new\nconfiguration on my test machine.\n\nFix this by skipping NULL pages in unpin_user_pages(), just like\nunpin_folios() already does.\n\nDetails: when booting on x86 with \"numa=fake=2 movablecore=4G\" on Linux\n6.12, and running this:\n\n tools/testing/selftests/mm/gup_longterm\n\n...I get the following crash:\n\nBUG: kernel NULL pointer dereference, address: 0000000000000008\nRIP: 0010:sanity_check_pinned_pages+0x3a/0x2d0\n...\nCall Trace:\n <TASK>\n ? __die_body+0x66/0xb0\n ? page_fault_oops+0x30c/0x3b0\n ? do_user_addr_fault+0x6c3/0x720\n ? irqentry_enter+0x34/0x60\n ? exc_page_fault+0x68/0x100\n ? asm_exc_page_fault+0x22/0x30\n ? sanity_check_pinned_pages+0x3a/0x2d0\n unpin_user_pages+0x24/0xe0\n check_and_migrate_movable_pages_or_folios+0x455/0x4b0\n __gup_longterm_locked+0x3bf/0x820\n ? mmap_read_lock_killable+0x12/0x50\n ? __pfx_mmap_read_lock_killable+0x10/0x10\n pin_user_pages+0x66/0xa0\n gup_test_ioctl+0x358/0xb20\n __se_sys_ioctl+0x6b/0xc0\n do_syscall_64+0x7b/0x150\n entry_SYSCALL_64_after_hwframe+0x76/0x7e"
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "94efde1d15399f5c88e576923db9bcd422d217f2",
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"version_value": "69d319450d1c651f3b05cd820ff285fdd810c032"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "6.12",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "6.12",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.5",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.13-rc2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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],
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"defaultStatus": "affected"
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}
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/69d319450d1c651f3b05cd820ff285fdd810c032",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/69d319450d1c651f3b05cd820ff285fdd810c032"
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},
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{
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"url": "https://git.kernel.org/stable/c/a1268be280d8e484ab3606d7476edd0f14bb9961",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/a1268be280d8e484ab3606d7476edd0f14bb9961"
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}
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]
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},
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"generator": {
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"engine": "bippy-5f407fcff5a0"
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}
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} |