{"id":"CVE-2022-50285","state":"PUBLISHED","title":"mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages\n\nThe h->*_huge_pages counters are protected by the hugetlb_lock, but\nalloc_huge_page has a corner case where it can decrement the counter\noutside of the lock.\n\nThis could lead to a corrupted value of h->resv_huge_pages, which we have\nobserved on our systems.\n\nTake the hugetlb_lock before decrementing h->resv_huge_pages to avoid a\npotential race.","publishedAt":"2025-09-15T14:21:21.504Z","updatedAt":"2026-05-23T15:24:08.748Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"3e50a07b6a5fcd39df1534d3fdaca4292a65efe6","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"629c986e19fe9481227c7cdfd9a105bbc104d245","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"2b35432d324898ec41beb27031d2a1a864a4d40e","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"11993652d0b49e27272db0a37aa828d8a3a4b92b","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"568e3812b1778b4c0c229649b59977d88f400ece","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"112a005d1ded04a4b41b6d01833cc0bda90625cc","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"c828fab903725279aa9dc6ae3d44bb7e4778f92c","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"12df140f0bdfae5dcfc81800970dd7f6f632e00c","versionType":"git"},{"version":"3f5fae4d1a3189d95b02b4b45e1218df147122bc","status":"affected","versionType":"git"},{"version":"4.3.6","status":"affected","lessThan":"4.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.4","versionType":"semver"},{"version":"4.9.332","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.298","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.264","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.223","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.153","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.76","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.6","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]}],"references":["https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6","https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245","https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e","https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b","https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece","https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc","https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c","https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50285.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50285","state":"PUBLISHED","datePublished":"2025-09-15T14:21:21.504Z","dateUpdated":"2026-05-23T15:24:08.748Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-15T13:58:00.977Z"},"containers":{"cna":{"title":"mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages\n\nThe h->*_huge_pages counters are protected by the hugetlb_lock, but\nalloc_huge_page has a corner case where it can decrement the counter\noutside of the lock.\n\nThis could lead to a corrupted value of h->resv_huge_pages, which we have\nobserved on our systems.\n\nTake the hugetlb_lock before decrementing h->resv_huge_pages to avoid a\npotential race."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"3e50a07b6a5fcd39df1534d3fdaca4292a65efe6","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"629c986e19fe9481227c7cdfd9a105bbc104d245","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"2b35432d324898ec41beb27031d2a1a864a4d40e","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"11993652d0b49e27272db0a37aa828d8a3a4b92b","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"568e3812b1778b4c0c229649b59977d88f400ece","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"112a005d1ded04a4b41b6d01833cc0bda90625cc","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"c828fab903725279aa9dc6ae3d44bb7e4778f92c","versionType":"git"},{"version":"a88c769548047b21f76fd71e04b6a3300ff17160","status":"affected","lessThan":"12df140f0bdfae5dcfc81800970dd7f6f632e00c","versionType":"git"},{"version":"3f5fae4d1a3189d95b02b4b45e1218df147122bc","status":"affected","versionType":"git"},{"version":"4.3.6","status":"affected","lessThan":"4.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.4","versionType":"semver"},{"version":"4.9.332","status":"unaffected","lessThanOrEqual":"4.9.*","versionType":"semver"},{"version":"4.14.298","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.264","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.223","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.153","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.76","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.6","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/hugetlb.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3e50a07b6a5fcd39df1534d3fdaca4292a65efe6"},{"url":"https://git.kernel.org/stable/c/629c986e19fe9481227c7cdfd9a105bbc104d245"},{"url":"https://git.kernel.org/stable/c/2b35432d324898ec41beb27031d2a1a864a4d40e"},{"url":"https://git.kernel.org/stable/c/11993652d0b49e27272db0a37aa828d8a3a4b92b"},{"url":"https://git.kernel.org/stable/c/568e3812b1778b4c0c229649b59977d88f400ece"},{"url":"https://git.kernel.org/stable/c/112a005d1ded04a4b41b6d01833cc0bda90625cc"},{"url":"https://git.kernel.org/stable/c/c828fab903725279aa9dc6ae3d44bb7e4778f92c"},{"url":"https://git.kernel.org/stable/c/12df140f0bdfae5dcfc81800970dd7f6f632e00c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:24:08.748Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"4.9.332"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"4.14.298"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"4.19.264"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"5.4.223"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"5.10.153"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"5.15.76"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.0.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3.6"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}