{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68459",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-30T09:28:09.395Z",
        "datePublished": "2026-08-15T05:51:19.713Z",
        "dateUpdated": "2026-08-15T05:51:19.713Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-15T05:51:19.713Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs()\n\nWhen we mount device w/ gc_merge mount option, we may suffer below\npotential deadlock:\n\nKworker\t\t\t\t\tGC trehad\t\t\tTruncator\n- f2fs_write_cache_pages\n - f2fs_write_single_data_page\n  - f2fs_do_write_data_page\n   - folio_start_writeback  --- set writeback flag on folio\n   - f2fs_outplace_write_data\n   : cached folio in internal bio cache\n  - f2fs_balance_fs\n   - wake_up(gc_thread)\n   : wake up gc thread to run foreground GC\n   - finish_wait(fggc_wq)\n   : wait on the waitqueue --- wait on GC thread to finish the work\n\t\t\t\t\t\t\t\t\t- truncate_inode_pages_range\n\t\t\t\t\t\t\t\t\t - __filemap_get_folio(, FGP_LOCK)  --- lock folio\n\t\t\t\t\t\t\t\t\t - truncate_inode_partial_folio\n\t\t\t\t\t\t\t\t\t  - folio_wait_writeback            --- wait on writeback being cleared\n\t\t\t\t\t- do_garbage_collect\n\t\t\t\t\t - move_data_page\n\t\t\t\t\t  - f2fs_get_lock_data_folio\n\t\t\t\t\t   - lock on folio  --- blocked on folio's lock\n\nIn order to avoid such deadlock, let's call below functions to commit\ncached bios in GC_MERGE path of f2fs_balance_fs() as the same as we did\nin NOGC_MERGE path.\n- f2fs_submit_merged_write(sbi, DATA);\n- f2fs_submit_all_merged_ipu_writes(sbi);"
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/f2fs/segment.c"
                    ],
                    "versions": [
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "8071500a8124e5a6d47d901a8d5ffd91743107a1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "eb02f218aacb36365e0ca2339cbae81fb05d31a5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "1436031b33fa23ab1ce7df5bc5500093413e8acf",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "b885c7783c19c36c7bf899492a0bffcd68afa8c7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "89479a27fa4e1e11f378b3724944eabceb84f114",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "aa807064473abd6f2cafe419fb77ea402d3e3104",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "351df4b201157351c7d26bf12c3eeb9dbce98854",
                            "lessThan": "8b4468ec023d0d1b4669dfb867588997cc03a06b",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/f2fs/segment.c"
                    ],
                    "versions": [
                        {
                            "version": "3.8",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.8",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.96",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2-rc1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "5.15.212"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "6.1.178"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "6.6.145"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "6.12.96"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "7.1.5"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.8",
                                    "versionEndExcluding": "7.2-rc1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/8071500a8124e5a6d47d901a8d5ffd91743107a1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eb02f218aacb36365e0ca2339cbae81fb05d31a5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/1436031b33fa23ab1ce7df5bc5500093413e8acf"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b885c7783c19c36c7bf899492a0bffcd68afa8c7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/89479a27fa4e1e11f378b3724944eabceb84f114"
                },
                {
                    "url": "https://git.kernel.org/stable/c/aa807064473abd6f2cafe419fb77ea402d3e3104"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8b4468ec023d0d1b4669dfb867588997cc03a06b"
                }
            ],
            "title": "f2fs: fix potential deadlock in gc_merge path of f2fs_balance_fs()",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}