CVE-2023-53826

{"id": "CVE-2023-53826", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "3f9b63dfce44a7c3c095dd93d910408e07ab1845", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "84250da1c63cb7d421a3b4812b5c2ce2e47d31a1", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "1cb14c06d6035539ef4215c4ba0871aea71d7c38", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "9d448dd6bcb61a508204b57ea1f454ba9bac2f24", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "79548ccdd992707879b4b683b7251c58ddf26f12", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "84253f3c2dad6be10d30c92626c763d9a9f512ad", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "a100de2974d208cfca032179b02ed4d1a0a7f143", "versionType": "git"}, {"status": "affected", "version": "801c135ce73d5df1caf3eca35b66a10824ae0707", "lessThan": "a240bc5c43130c6aa50831d7caaa02a1d84e1bce", "versionType": "git"}], "programFiles": ["drivers/mtd/ubi/wl.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.22"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.22", "versionType": "semver"}, {"status": "unaffected", "version": "4.14.308", "versionType": "semver", "lessThanOrEqual": "4.14.*"}, {"status": "unaffected", "version": "4.19.276", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.235", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.173", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.100", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.18", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.2.5", "versionType": "semver", "lessThanOrEqual": "6.2.*"}, {"status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/mtd/ubi/wl.c"], "defaultStatus": "affected"}]}], "published": "2025-12-09T16:17:21.457", "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"}], "vulnStatus": "Deferred", "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]."}], "lastModified": "2026-06-17T06:46:08.393", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}