{"cve":"CVE-2022-49152","nvd":{"published":"2025-02-26T07:00:52.440","modified":"2026-06-17T05:17:13.630","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nXArray: Fix xas_create_range() when multi-order entry present\n\nIf there is already an entry present that is of order >= XA_CHUNK_SHIFT\nwhen we call xas_create_range(), xas_create_range() will misinterpret\nthat entry as a node and dereference xa_node->parent, generally leading\nto a crash that looks something like this:\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000001:\n0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 32 Comm: khugepaged Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0\nRIP: 0010:xa_parent_locked include/linux/xarray.h:1207 [inline]\nRIP: 0010:xas_create_range+0x2d9/0x6e0 lib/xarray.c:725\n\nIt's deterministically reproducable once you know what the problem is,\nbut producing it in a live kernel requires khugepaged to hit a race.\nWhile the problem has been present since xas_create_range() was\nintroduced, I'm not aware of a way to hit it before the page cache was\nconverted to use multi-index entries.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","score":4.7},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/18f13edf3424b3b61814b69d5269b2e14584800c","https://git.kernel.org/stable/c/3e3c658055c002900982513e289398a1aad4a488"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49152","score":0.00199,"percentile":0.09779,"date":"2026-10-31"},"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."]}