CVE-2023-54293 (GCVE-0-2023-54293)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:23 – Updated: 2026-05-11 19:59
VLAI
Title
bcache: fixup btree_cache_wait list damage
Summary
In the Linux kernel, the following vulnerability has been resolved: bcache: fixup btree_cache_wait list damage We get a kernel crash about "list_add corruption. next->prev should be prev (ffff9c801bc01210), but was ffff9c77b688237c. (next=ffffae586d8afe68)." crash> struct list_head 0xffff9c801bc01210 struct list_head { next = 0xffffae586d8afe68, prev = 0xffffae586d8afe68 } crash> struct list_head 0xffff9c77b688237c struct list_head { next = 0x0, prev = 0x0 } crash> struct list_head 0xffffae586d8afe68 struct list_head struct: invalid kernel virtual address: ffffae586d8afe68 type: "gdb_readmem_callback" Cannot access memory at address 0xffffae586d8afe68 [230469.019492] Call Trace: [230469.032041] prepare_to_wait+0x8a/0xb0 [230469.044363] ? bch_btree_keys_free+0x6c/0xc0 [escache] [230469.056533] mca_cannibalize_lock+0x72/0x90 [escache] [230469.068788] mca_alloc+0x2ae/0x450 [escache] [230469.080790] bch_btree_node_get+0x136/0x2d0 [escache] [230469.092681] bch_btree_check_thread+0x1e1/0x260 [escache] [230469.104382] ? finish_wait+0x80/0x80 [230469.115884] ? bch_btree_check_recurse+0x1a0/0x1a0 [escache] [230469.127259] kthread+0x112/0x130 [230469.138448] ? kthread_flush_work_fn+0x10/0x10 [230469.149477] ret_from_fork+0x35/0x40 bch_btree_check_thread() and bch_dirty_init_thread() may call mca_cannibalize() to cannibalize other cached btree nodes. Only one thread can do it at a time, so the op of other threads will be added to the btree_cache_wait list. We must call finish_wait() to remove op from btree_cache_wait before free it's memory address. Otherwise, the list will be damaged. Also should call bch_cannibalize_unlock() to release the btree_cache_alloc_lock and wake_up other waiters.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8e7102273f597dbb38af43da874f8c123f8e6dbe , < bcb295778afda4f2feb0d3c0289a53fd43d5a3a6 (git)
Affected: 8e7102273f597dbb38af43da874f8c123f8e6dbe , < cbdd5b3322f7bbe6454c97cac994757f1192c07b (git)
Affected: 8e7102273f597dbb38af43da874f8c123f8e6dbe , < 25ec4779d0fb3ed9cac1e4d9e0e4261b4a12f6ed (git)
Affected: 8e7102273f597dbb38af43da874f8c123f8e6dbe , < 2882a4c4f0c90e99f37dbd8db369b9982fd613e7 (git)
Affected: 8e7102273f597dbb38af43da874f8c123f8e6dbe , < f0854489fc07d2456f7cc71a63f4faf9c716ffbe (git)
Create a notification for this product.
Linux Linux Affected: 5.7
Unaffected: 0 , < 5.7 (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/bcache/btree.c",
            "drivers/md/bcache/btree.h",
            "drivers/md/bcache/writeback.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "bcb295778afda4f2feb0d3c0289a53fd43d5a3a6",
              "status": "affected",
              "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
              "versionType": "git"
            },
            {
              "lessThan": "cbdd5b3322f7bbe6454c97cac994757f1192c07b",
              "status": "affected",
              "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
              "versionType": "git"
            },
            {
              "lessThan": "25ec4779d0fb3ed9cac1e4d9e0e4261b4a12f6ed",
              "status": "affected",
              "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
              "versionType": "git"
            },
            {
              "lessThan": "2882a4c4f0c90e99f37dbd8db369b9982fd613e7",
              "status": "affected",
              "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
              "versionType": "git"
            },
            {
              "lessThan": "f0854489fc07d2456f7cc71a63f4faf9c716ffbe",
              "status": "affected",
              "version": "8e7102273f597dbb38af43da874f8c123f8e6dbe",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/bcache/btree.c",
            "drivers/md/bcache/btree.h",
            "drivers/md/bcache/writeback.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.7"
            },
            {
              "lessThan": "5.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.188",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.121",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.39",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.4",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "5.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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-\u003eprev should be\nprev (ffff9c801bc01210), but was ffff9c77b688237c.\n(next=ffffae586d8afe68).\"\n\ncrash\u003e struct list_head 0xffff9c801bc01210\nstruct list_head {\n  next = 0xffffae586d8afe68,\n  prev = 0xffffae586d8afe68\n}\ncrash\u003e struct list_head 0xffff9c77b688237c\nstruct list_head {\n  next = 0x0,\n  prev = 0x0\n}\ncrash\u003e 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\u0027s 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:59:09.658Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54293",
    "datePublished": "2025-12-30T12:23:31.111Z",
    "dateReserved": "2025-12-30T12:06:44.527Z",
    "dateUpdated": "2026-05-11T19:59:09.658Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-54293",
      "date": "2026-08-08",
      "epss": "0.00174",
      "percentile": "0.0708"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54293\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:18.383\",\"lastModified\":\"2026-06-17T06:47:10.287\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"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-\u003eprev should be\\nprev (ffff9c801bc01210), but was ffff9c77b688237c.\\n(next=ffffae586d8afe68).\\\"\\n\\ncrash\u003e struct list_head 0xffff9c801bc01210\\nstruct list_head {\\n  next = 0xffffae586d8afe68,\\n  prev = 0xffffae586d8afe68\\n}\\ncrash\u003e struct list_head 0xffff9c77b688237c\\nstruct list_head {\\n  next = 0x0,\\n  prev = 0x0\\n}\\ncrash\u003e 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\u0027s 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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nbcache: correcci\u00f3n del da\u00f1o en la lista btree_cache_wait\\n\\nObtenemos un fallo del kernel sobre \u0027corrupci\u00f3n de list_add. next-\u0026gt;prev deber\u00eda ser prev (ffff9c801bc01210), pero era ffff9c77b688237c. (next=ffffae586d8afe68).\u0027\\n\\ncrash\u0026gt; struct list_head 0xffff9c801bc01210\\nstruct list_head {\\n  next = 0xffffae586d8afe68,\\n  prev = 0xffffae586d8afe68\\n}\\ncrash\u0026gt; struct list_head 0xffff9c77b688237c\\nstruct list_head {\\n  next = 0x0,\\n  prev = 0x0\\n}\\ncrash\u0026gt; struct list_head 0xffffae586d8afe68\\nstruct list_head struct: direcci\u00f3n virtual de kernel inv\u00e1lida: ffffae586d8afe68  tipo: \u0027gdb_readmem_callback\u0027\\nNo se puede acceder a la memoria en la direcci\u00f3n 0xffffae586d8afe68\\n\\n[230469.019492] Rastro de Llamada:\\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() y bch_dirty_init_thread() pueden llamar a mca_cannibalize() para canibalizar otros nodos btree en cach\u00e9. Solo un hilo puede hacerlo a la vez, por lo que la operaci\u00f3n de otros hilos se a\u00f1adir\u00e1 a la lista btree_cache_wait.\\n\\nDebemos llamar a finish_wait() para eliminar la operaci\u00f3n de btree_cache_wait antes de liberar su direcci\u00f3n de memoria. De lo contrario, la lista se da\u00f1ar\u00e1. Tambi\u00e9n se debe llamar a bch_cannibalize_unlock() para liberar el btree_cache_alloc_lock y despertar a otros en espera.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/md/bcache/btree.c\",\"drivers/md/bcache/btree.h\",\"drivers/md/bcache/writeback.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8e7102273f597dbb38af43da874f8c123f8e6dbe\",\"lessThan\":\"bcb295778afda4f2feb0d3c0289a53fd43d5a3a6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e7102273f597dbb38af43da874f8c123f8e6dbe\",\"lessThan\":\"cbdd5b3322f7bbe6454c97cac994757f1192c07b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e7102273f597dbb38af43da874f8c123f8e6dbe\",\"lessThan\":\"25ec4779d0fb3ed9cac1e4d9e0e4261b4a12f6ed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e7102273f597dbb38af43da874f8c123f8e6dbe\",\"lessThan\":\"2882a4c4f0c90e99f37dbd8db369b9982fd613e7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8e7102273f597dbb38af43da874f8c123f8e6dbe\",\"lessThan\":\"f0854489fc07d2456f7cc71a63f4faf9c716ffbe\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/md/bcache/btree.c\",\"drivers/md/bcache/btree.h\",\"drivers/md/bcache/writeback.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.188\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.121\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.39\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4.4\",\"lessThanOrEqual\":\"6.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/25ec4779d0fb3ed9cac1e4d9e0e4261b4a12f6ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2882a4c4f0c90e99f37dbd8db369b9982fd613e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bcb295778afda4f2feb0d3c0289a53fd43d5a3a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cbdd5b3322f7bbe6454c97cac994757f1192c07b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f0854489fc07d2456f7cc71a63f4faf9c716ffbe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:33:18+00:00",
      "cve": "CVE-2023-54293",
      "id": "CVE-2023-54293",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bcache: fixup btree_cache_wait list damage",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54293.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.