cvelist/2024/35xxx/CVE-2024-35797.json
2024-05-29 06:03:30 +00:00

124 lines
6.7 KiB
JSON

{
"data_version": "4.0",
"data_type": "CVE",
"data_format": "MITRE",
"CVE_data_meta": {
"ID": "CVE-2024-35797",
"ASSIGNER": "cve@kernel.org",
"STATE": "PUBLIC"
},
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: cachestat: fix two shmem bugs\n\nWhen cachestat on shmem races with swapping and invalidation, there\nare two possible bugs:\n\n1) A swapin error can have resulted in a poisoned swap entry in the\n shmem inode's xarray. Calling get_shadow_from_swap_cache() on it\n will result in an out-of-bounds access to swapper_spaces[].\n\n Validate the entry with non_swap_entry() before going further.\n\n2) When we find a valid swap entry in the shmem's inode, the shadow\n entry in the swapcache might not exist yet: swap IO is still in\n progress and we're before __remove_mapping; swapin, invalidation,\n or swapoff have removed the shadow from swapcache after we saw the\n shmem swap entry.\n\n This will send a NULL to workingset_test_recent(). The latter\n purely operates on pointer bits, so it won't crash - node 0, memcg\n ID 0, eviction timestamp 0, etc. are all valid inputs - but it's a\n bogus test. In theory that could result in a false \"recently\n evicted\" count.\n\n Such a false positive wouldn't be the end of the world. But for\n code clarity and (future) robustness, be explicit about this case.\n\n Bail on get_shadow_from_swap_cache() returning NULL."
}
]
},
"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": "cf264e1329fb",
"version_value": "b79f9e1ff27c"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"versions": [
{
"version": "6.5",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.5",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.24",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.7.12",
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8.3",
"lessThanOrEqual": "6.8.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
],
"defaultStatus": "affected"
}
}
]
}
}
]
}
}
]
}
},
"references": {
"reference_data": [
{
"url": "https://git.kernel.org/stable/c/b79f9e1ff27c994a4c452235ba09e672ec698e23",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/b79f9e1ff27c994a4c452235ba09e672ec698e23"
},
{
"url": "https://git.kernel.org/stable/c/d962f6c583458037dc7e529659b2b02b9dd3d94b",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/d962f6c583458037dc7e529659b2b02b9dd3d94b"
},
{
"url": "https://git.kernel.org/stable/c/24a0e73d544439bb9329fbbafac44299e548a677",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/24a0e73d544439bb9329fbbafac44299e548a677"
},
{
"url": "https://git.kernel.org/stable/c/d5d39c707a4cf0bcc84680178677b97aa2cb2627",
"refsource": "MISC",
"name": "https://git.kernel.org/stable/c/d5d39c707a4cf0bcc84680178677b97aa2cb2627"
}
]
},
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