{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-54293",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-30T12:06:44.527Z",
        "datePublished": "2025-12-30T12:23:31.111Z",
        "dateUpdated": "2026-05-11T19:59:09.658Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:59:09.658Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbcache: fixup btree_cache_wait list damage\n\nWe get a kernel crash about \"list_add corruption. next->prev should be\nprev (ffff9c801bc01210), but was ffff9c77b688237c.\n(next=ffffae586d8afe68).\"\n\ncrash> struct list_head 0xffff9c801bc01210\nstruct list_head {\n  next = 0xffffae586d8afe68,\n  prev = 0xffffae586d8afe68\n}\ncrash> struct list_head 0xffff9c77b688237c\nstruct list_head {\n  next = 0x0,\n  prev = 0x0\n}\ncrash> struct list_head 0xffffae586d8afe68\nstruct list_head struct: invalid kernel virtual address: ffffae586d8afe68  type: \"gdb_readmem_callback\"\nCannot access memory at address 0xffffae586d8afe68\n\n[230469.019492] Call Trace:\n[230469.032041]  prepare_to_wait+0x8a/0xb0\n[230469.044363]  ? bch_btree_keys_free+0x6c/0xc0 [escache]\n[230469.056533]  mca_cannibalize_lock+0x72/0x90 [escache]\n[230469.068788]  mca_alloc+0x2ae/0x450 [escache]\n[230469.080790]  bch_btree_node_get+0x136/0x2d0 [escache]\n[230469.092681]  bch_btree_check_thread+0x1e1/0x260 [escache]\n[230469.104382]  ? finish_wait+0x80/0x80\n[230469.115884]  ? bch_btree_check_recurse+0x1a0/0x1a0 [escache]\n[230469.127259]  kthread+0x112/0x130\n[230469.138448]  ? kthread_flush_work_fn+0x10/0x10\n[230469.149477]  ret_from_fork+0x35/0x40\n\nbch_btree_check_thread() and bch_dirty_init_thread() may call\nmca_cannibalize() to cannibalize other cached btree nodes. Only one thread\ncan do it at a time, so the op of other threads will be added to the\nbtree_cache_wait list.\n\nWe must call finish_wait() to remove op from btree_cache_wait before free\nit's memory address. Otherwise, the list will be damaged. Also should call\nbch_cannibalize_unlock() to release the btree_cache_alloc_lock and wake_up\nother waiters."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/md/bcache/btree.c",
                        "drivers/md/bcache/btree.h",
                        "drivers/md/bcache/writeback.c"
                    ],
                    "versions": [
                        {
                            "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
                            "lessThan": "bcb295778afda4f2feb0d3c0289a53fd43d5a3a6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
                            "lessThan": "cbdd5b3322f7bbe6454c97cac994757f1192c07b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
                            "lessThan": "25ec4779d0fb3ed9cac1e4d9e0e4261b4a12f6ed",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
                            "lessThan": "2882a4c4f0c90e99f37dbd8db369b9982fd613e7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
                            "lessThan": "f0854489fc07d2456f7cc71a63f4faf9c716ffbe",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/md/bcache/btree.c",
                        "drivers/md/bcache/btree.h",
                        "drivers/md/bcache/writeback.c"
                    ],
                    "versions": [
                        {
                            "version": "5.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.188",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.121",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.39",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.4",
                            "lessThanOrEqual": "6.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5",
                            "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": "5.7",
                                    "versionEndExcluding": "5.10.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "5.15.121"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.1.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.4.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.7",
                                    "versionEndExcluding": "6.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/bcb295778afda4f2feb0d3c0289a53fd43d5a3a6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cbdd5b3322f7bbe6454c97cac994757f1192c07b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/25ec4779d0fb3ed9cac1e4d9e0e4261b4a12f6ed"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2882a4c4f0c90e99f37dbd8db369b9982fd613e7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f0854489fc07d2456f7cc71a63f4faf9c716ffbe"
                }
            ],
            "title": "bcache: fixup btree_cache_wait list damage",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}