{"cve":"CVE-2024-26630","nvd":{"published":"2024-03-13T16:15:30.047","modified":"2026-08-04T11:16:50.653","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm: cachestat: fix folio read-after-free in cache walk\n\nIn cachestat, we access the folio from the page cache's xarray to compute\nits page offset, and check for its dirty and writeback flags.  However, we\ndo not hold a reference to the folio before performing these actions,\nwhich means the folio can concurrently be released and reused as another\nfolio/page/slab.\n\nGet around this altogether by just using xarray's existing machinery for\nthe folio page offsets and dirty/writeback states.\n\nThis changes behavior for tmpfs files to now always report zeroes in their\ndirty and writeback counters.  This is okay as tmpfs doesn't follow\nconventional writeback cache behavior: its pages get \"cleaned\" during\nswapout, after which they're no longer resident etc.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/3a75cb05d53f4a6823a32deb078de1366954a804","https://git.kernel.org/stable/c/ba60fdf75e89ea762bb617be578dc47f27655117","https://git.kernel.org/stable/c/fe7e008e0ce728252e4ec652cceebcc62211657c","https://git.kernel.org/stable/c/3a75cb05d53f4a6823a32deb078de1366954a804","https://git.kernel.org/stable/c/ba60fdf75e89ea762bb617be578dc47f27655117"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:46:54.846886191+00:00"},"epss":{"cve":"CVE-2024-26630","score":0.00304,"percentile":0.23216,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}