mirror of
https://github.com/CVEProject/cvelist.git
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102 lines
4.8 KiB
JSON
102 lines
4.8 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-2024-36943",
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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\nfs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan\n\nmake_uffd_wp_pte() was previously doing:\n\n pte = ptep_get(ptep);\n ptep_modify_prot_start(ptep);\n pte = pte_mkuffd_wp(pte);\n ptep_modify_prot_commit(ptep, pte);\n\nBut if another thread accessed or dirtied the pte between the first 2\ncalls, this could lead to loss of that information. Since\nptep_modify_prot_start() gets and clears atomically, the following is the\ncorrect pattern and prevents any possible race. Any access after the\nfirst call would see an invalid pte and cause a fault:\n\n pte = ptep_modify_prot_start(ptep);\n pte = pte_mkuffd_wp(pte);\n ptep_modify_prot_commit(ptep, pte);"
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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": "52526ca7fdb9",
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"version_value": "74b3d66f91d9"
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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": "6.7",
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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": "6.7",
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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": "6.8.10",
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"lessThanOrEqual": "6.8.*",
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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": "6.9",
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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/74b3d66f91d9f539f99faad74d796fa9a389a015",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/74b3d66f91d9f539f99faad74d796fa9a389a015"
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},
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{
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"url": "https://git.kernel.org/stable/c/c70dce4982ce1718bf978a35f8e26160b82081f4",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/c70dce4982ce1718bf978a35f8e26160b82081f4"
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}
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]
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},
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"generator": {
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"engine": "bippy-9e1c9544281a"
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}
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} |