{"cve":{"cve_id":"CVE-2026-53154","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":null,"epss_percentile":null,"epss_as_of":null,"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/hugetlb: restore reservation on error in hugetlb folio copy paths\n\nTwo sites in mm/hugetlb.c allocate a hugetlb folio via\nalloc_hugetlb_folio() (consuming a VMA reservation) and then call\ncopy_user_large_folio(), which became int-returning in commit 1cb9dc4b475c\n(\"mm: hwpoison: support recovery from HugePage copy-on-write faults\") and\ncan now fail (e.g.  -EHWPOISON on a hwpoisoned source page).  On the\nfailure path, folio_put() restores the global hugetlb pool count through\nfree_huge_folio(), but the per-VMA reservation map entry is left marked\nconsumed:\n\n  - hugetlb_mfill_atomic_pte() resubmission path (UFFDIO_COPY)\n  - copy_hugetlb_page_range() fork-time CoW path when\n    hugetlb_try_dup_anon_rmap() fails (rare: pinned hugetlb anon\n    folio under fork)\n\nUser-visible effect: on UFFDIO_COPY into a private hugetlb VMA where the\nresubmission copy fails, the reservation for that address is leaked from\nthe VMA's reserve map.  A subsequent fault at the same address takes the\nno-reservation path, and under hugetlb pool pressure the task is SIGBUSed\nat an address it had previously reserved.  The fork-time CoW path leaks\nthe same way in the child VMA's reserve map, though it requires the much\nrarer combination of pinned hugetlb anon page + hwpoisoned source.\n\nAdd the missing restore_reserve_on_error() call before folio_put() on both\nerror paths.","published_at":"2026-06-25T08:38:38.168000Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":null,"nvd_references":["https://git.kernel.org/stable/c/8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38","https://git.kernel.org/stable/c/e47bf16af3c45470ea32f2241fa69aefe0dd61bd","https://git.kernel.org/stable/c/c72469ac0f274bde3f0df60a4584e14a123d0aa6","https://git.kernel.org/stable/c/45e33d43243d71d089af42f5077b8213cee6610f","https://git.kernel.org/stable/c/40c81856e622a9dc59294a90d169ac07ea25b0b0"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-28T17:55:28.590503Z","updated_at":"2026-06-28T23:30:50.753831Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1cb9dc4b475c7418f925ab0c97b6750007d9f52e","version_start_inclusive":true,"version_end":"8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1cb9dc4b475c7418f925ab0c97b6750007d9f52e:8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1cb9dc4b475c7418f925ab0c97b6750007d9f52e","version_start_inclusive":true,"version_end":"e47bf16af3c45470ea32f2241fa69aefe0dd61bd","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1cb9dc4b475c7418f925ab0c97b6750007d9f52e:e47bf16af3c45470ea32f2241fa69aefe0dd61bd"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1cb9dc4b475c7418f925ab0c97b6750007d9f52e","version_start_inclusive":true,"version_end":"c72469ac0f274bde3f0df60a4584e14a123d0aa6","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1cb9dc4b475c7418f925ab0c97b6750007d9f52e:c72469ac0f274bde3f0df60a4584e14a123d0aa6"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1cb9dc4b475c7418f925ab0c97b6750007d9f52e","version_start_inclusive":true,"version_end":"45e33d43243d71d089af42f5077b8213cee6610f","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1cb9dc4b475c7418f925ab0c97b6750007d9f52e:45e33d43243d71d089af42f5077b8213cee6610f"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"1cb9dc4b475c7418f925ab0c97b6750007d9f52e","version_start_inclusive":true,"version_end":"40c81856e622a9dc59294a90d169ac07ea25b0b0","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:1cb9dc4b475c7418f925ab0c97b6750007d9f52e:40c81856e622a9dc59294a90d169ac07ea25b0b0"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.4","version_start_inclusive":true,"version_end":"6.4","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.4:6.4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"0","version_start_inclusive":true,"version_end":"6.4","version_end_inclusive":false,"cpe23_uri":"cve5:linux:linux:0:6.4"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.6.143","version_start_inclusive":true,"version_end":"6.6.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.6.143:6.6.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.12.94","version_start_inclusive":true,"version_end":"6.12.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.12.94:6.12.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"6.18.36","version_start_inclusive":true,"version_end":"6.18.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:6.18.36:6.18.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.0.13","version_start_inclusive":true,"version_end":"7.0.*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.0.13:7.0.*"},{"vendor_slug":"linux","vendor_name":"Linux","product_slug":"linux","product_name":"Linux","version_start":"7.1","version_start_inclusive":true,"version_end":"*","version_end_inclusive":true,"cpe23_uri":"cve5:linux:linux:7.1:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://git.kernel.org/stable/c/8d6e1dd3ad1340cd8b6d554b7aa93d8f0a1c6d38","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/e47bf16af3c45470ea32f2241fa69aefe0dd61bd","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/c72469ac0f274bde3f0df60a4584e14a123d0aa6","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/45e33d43243d71d089af42f5077b8213cee6610f","source_type":"MISC","tags":[]},{"url":"https://git.kernel.org/stable/c/40c81856e622a9dc59294a90d169ac07ea25b0b0","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-25T08:38:38.168000Z","label":"CVE published","source":null}]}