{"cve":"CVE-2023-53991","nvd":{"published":"2025-12-24T11:15:52.000","modified":"2026-06-17T06:46:29.910","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/dpu: Disallow unallocated resources to be returned\n\nIn the event that the topology requests resources that have not been\ncreated by the system (because they are typically not represented in\ndpu_mdss_cfg ^1), the resource(s) in global_state (in this case DSC\nblocks, until their allocation/assignment is being sanity-checked in\n\"drm/msm/dpu: Reject topologies for which no DSC blocks are available\")\nremain NULL but will still be returned out of\ndpu_rm_get_assigned_resources, where the caller expects to get an array\ncontaining num_blks valid pointers (but instead gets these NULLs).\n\nTo prevent this from happening, where null-pointer dereferences\ntypically result in a hard-to-debug platform lockup, num_blks shouldn't\nincrease past NULL blocks and will print an error and break instead.\nAfter all, max_blks represents the static size of the maximum number of\nblocks whereas the actual amount varies per platform.\n\n^1: which can happen after a git rebase ended up moving additions to\n_dpu_cfg to a different struct which has the same patch context.\n\nPatchwork: https://patchwork.freedesktop.org/patch/517636/","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/8dbd54d679e3ab37be43bc1ed9f463dbf83a2259","https://git.kernel.org/stable/c/9e1e236acdc42b5c43ec8d7f03a39537e70cc309","https://git.kernel.org/stable/c/9fe3644c720ac87d150f0bba5a4ae86cae55afaf","https://git.kernel.org/stable/c/abc40122d9a69f56c04efb5a7485795f5ac799d1","https://git.kernel.org/stable/c/bf661c5e3bc48973acb363c76e3db965d9ed26d0"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:17:07.138532058+00:00"},"epss":{"cve":"CVE-2023-53991","score":0.002,"percentile":0.09911,"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."]}