{"cve":"CVE-2026-46264","nvd":{"published":"2026-06-03T18:16:27.893","modified":"2026-07-22T20:10:00.127","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pf: Fix sysfs initialization\n\nIn case of devm_add_action_or_reset() failure the provided cleanup\naction will be run immediately on the not yet initialized kobject.\nThis may lead to errors like:\n\n [ ] kobject: '(null)' (ff110001393608e0): is not initialized, yet kobject_put() is being called.\n [ ] WARNING: lib/kobject.c:734 at kobject_put+0xd9/0x250, CPU#0: kworker/0:0/9\n [ ] RIP: 0010:kobject_put+0xdf/0x250\n [ ] Call Trace:\n [ ]  xe_sriov_pf_sysfs_init+0x21/0x100 [xe]\n [ ]  xe_sriov_pf_init_late+0x87/0x2b0 [xe]\n [ ]  xe_sriov_init_late+0x5f/0x2c0 [xe]\n [ ]  xe_device_probe+0x5f2/0xc20 [xe]\n [ ]  xe_pci_probe+0x396/0x610 [xe]\n [ ]  local_pci_probe+0x47/0xb0\n\n [ ] refcount_t: underflow; use-after-free.\n [ ] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0x68/0xb0, CPU#0: kworker/0:0/9\n [ ] RIP: 0010:refcount_warn_saturate+0x68/0xb0\n [ ] Call Trace:\n [ ]  kobject_put+0x174/0x250\n [ ]  xe_sriov_pf_sysfs_init+0x21/0x100 [xe]\n [ ]  xe_sriov_pf_init_late+0x87/0x2b0 [xe]\n [ ]  xe_sriov_init_late+0x5f/0x2c0 [xe]\n [ ]  xe_device_probe+0x5f2/0xc20 [xe]\n [ ]  xe_pci_probe+0x396/0x610 [xe]\n [ ]  local_pci_probe+0x47/0xb0\n\nFix that by calling kobject_init() and kobject_add() separately\nand register cleanup action after the kobject is initialized.\n\nAlso make this cleanup registration a part of the create helper to\nfix another mistake, as in the loop we were wrongly passing parent\nkobject while registering cleanup action, and this resulted in some\nundetected leaks.\n\n(cherry picked from commit 98b16727f07e26a5d4de84d88805ce7ffcfdd324)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/6ae479b1919ee9bd0560fc7af649932dd420d010","https://git.kernel.org/stable/c/bf7172cd25ed182f30af2cbb9f80c730dc717d8e"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:37:48.043517290+00:00"},"epss":{"cve":"CVE-2026-46264","score":0.00112,"percentile":0.01365,"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."]}