{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T03:11:01.250","vulnerabilities":[{"cve":{"id":"CVE-2023-53826","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-12-09T16:17:21.457","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show()\n\nWear-leveling entry could be freed in error path, which may be accessed\nagain in eraseblk_count_seq_show(), for example:\n\n__erase_worker                eraseblk_count_seq_show\n                                wl = ubi->lookuptbl[*block_number]\n\t\t\t\tif (wl)\n  wl_entry_destroy\n    ubi->lookuptbl[e->pnum] = NULL\n    kmem_cache_free(ubi_wl_entry_slab, e)\n\t\t                   erase_count = wl->ec  // UAF!\n\nWear-leveling entry updating/accessing in ubi->lookuptbl should be\nprotected by ubi->wl_lock, fix it by adding ubi->wl_lock to serialize\nwl entry accessing between wl_entry_destroy() and\neraseblk_count_seq_show().\n\nFetch a reproducer in [Link]."}],"metrics":{},"references":[{"url":"https://git.kernel.org/stable/c/1cb14c06d6035539ef4215c4ba0871aea71d7c38","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3f9b63dfce44a7c3c095dd93d910408e07ab1845","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/79548ccdd992707879b4b683b7251c58ddf26f12","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/84250da1c63cb7d421a3b4812b5c2ce2e47d31a1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/84253f3c2dad6be10d30c92626c763d9a9f512ad","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9d448dd6bcb61a508204b57ea1f454ba9bac2f24","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a100de2974d208cfca032179b02ed4d1a0a7f143","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a240bc5c43130c6aa50831d7caaa02a1d84e1bce","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}]}