{"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"}}}}

{}

{"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->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."}, {"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 'corrupci\u00f3n de list_add. next->prev deber\u00eda ser prev (ffff9c801bc01210), pero era ffff9c77b688237c. (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: direcci\u00f3n virtual de kernel inv\u00e1lida: ffffae586d8afe68 tipo: 'gdb_readmem_callback'\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."}], "id": "CVE-2023-54293", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-30T13:16:18.383", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: bcache: fixup btree_cache_wait list damage", "id": "2426093", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426093"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2023-54293", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54293\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54293\nhttps://lore.kernel.org/linux-cve-announce/2025123030-CVE-2023-54293-c2bb@gregkh/T"]}

{}