{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23201", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.986Z", "datePublished": "2026-02-14T16:27:25.693Z", "dateUpdated": "2026-02-14T16:27:25.693Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-14T16:27:25.693Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix oops due to invalid pointer for kfree() in parse_longname()\n\nThis fixes a kernel oops when reading ceph snapshot directories (.snap),\nfor example by simply running `ls /mnt/my_ceph/.snap`.\n\nThe variable str is guarded by __free(kfree), but advanced by one for\nskipping the initial '_' in snapshot names. Thus, kfree() is called\nwith an invalid pointer. This patch removes the need for advancing the\npointer so kfree() is called with correct memory pointer.\n\nSteps to reproduce:\n\n1. Create snapshots on a cephfs volume (I've 63 snaps in my testcase)\n\n2. Add cephfs mount to fstab\n$ echo \"samba-fileserver@.files=/volumes/datapool/stuff/3461082b-ecc9-4e82-8549-3fd2590d3fb6 /mnt/test/stuff ceph acl,noatime,_netdev 0 0\" >> /etc/fstab\n\n3. Reboot the system\n$ systemctl reboot\n\n4. Check if it's really mounted\n$ mount | grep stuff\n\n5. List snapshots (expected 63 snapshots on my system)\n$ ls /mnt/test/stuff/.snap\n\nNow ls hangs forever and the kernel log shows the oops."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ceph/crypto.c"], "versions": [{"version": "bb80f7618832d26f7e395f52f82b1dac76223e5f", "lessThan": "8c9af7339de419819cfc641d551675d38ff99abf", "status": "affected", "versionType": "git"}, {"version": "101841c38346f4ca41dc1802c867da990ffb32eb", "lessThan": "e258ed369c9e04caa7d2fd49785d753ae4034cb6", "status": "affected", "versionType": "git"}, {"version": "101841c38346f4ca41dc1802c867da990ffb32eb", "lessThan": "bc8dedae022ce3058659c3addef3ec4b41d15e00", "status": "affected", "versionType": "git"}, {"version": "3145b2b11492d61c512bbc59660bb823bc757f48", "status": "affected", "versionType": "git"}, {"version": "493479af8af3ab907f49e99323777d498a4fbd2b", "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/ceph/crypto.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.70", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.10", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "6.12.42", "versionEndExcluding": "6.12.70"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8c9af7339de419819cfc641d551675d38ff99abf"}, {"url": "https://git.kernel.org/stable/c/e258ed369c9e04caa7d2fd49785d753ae4034cb6"}, {"url": "https://git.kernel.org/stable/c/bc8dedae022ce3058659c3addef3ec4b41d15e00"}], "title": "ceph: fix oops due to invalid pointer for kfree() in parse_longname()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix oops due to invalid pointer for kfree() in parse_longname()\n\nThis fixes a kernel oops when reading ceph snapshot directories (.snap),\nfor example by simply running `ls /mnt/my_ceph/.snap`.\n\nThe variable str is guarded by __free(kfree), but advanced by one for\nskipping the initial '_' in snapshot names. Thus, kfree() is called\nwith an invalid pointer. This patch removes the need for advancing the\npointer so kfree() is called with correct memory pointer.\n\nSteps to reproduce:\n\n1. Create snapshots on a cephfs volume (I've 63 snaps in my testcase)\n\n2. Add cephfs mount to fstab\n$ echo \"samba-fileserver@.files=/volumes/datapool/stuff/3461082b-ecc9-4e82-8549-3fd2590d3fb6 /mnt/test/stuff ceph acl,noatime,_netdev 0 0\" >> /etc/fstab\n\n3. Reboot the system\n$ systemctl reboot\n\n4. Check if it's really mounted\n$ mount | grep stuff\n\n5. List snapshots (expected 63 snapshots on my system)\n$ ls /mnt/test/stuff/.snap\n\nNow ls hangs forever and the kernel log shows the oops."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nceph: corrige un oops debido a un puntero inv\u00e1lido para kfree() en parse_longname()\n\nEsto corrige un oops del kernel al leer directorios de instant\u00e1neas de ceph (.snap), por ejemplo, simplemente ejecutando 'ls /mnt/my_ceph/.snap'.\n\nLa variable str est\u00e1 protegida por __free(kfree), pero se avanza en uno para saltar el '_' inicial en los nombres de las instant\u00e1neas. Por lo tanto, se llama a kfree() con un puntero inv\u00e1lido. Este parche elimina la necesidad de avanzar el puntero para que se llame a kfree() con el puntero de memoria correcto.\n\nPasos para reproducir:\n\n1. Crea instant\u00e1neas en un volumen cephfs (tengo 63 instant\u00e1neas en mi caso de prueba)\n\n2. A\u00f1ade el montaje cephfs a fstab\n$ echo 'samba-fileserver@.files=/volumes/datapool/stuff/3461082b-ecc9-4e82-8549-3fd2590d3fb6 /mnt/test/stuff ceph acl,noatime,_netdev 0 0' >> /etc/fstab\n\n3. Reinicia el sistema\n$ systemctl reboot\n\n4. Comprueba si est\u00e1 realmente montado\n$ mount | grep stuff\n\n5. Lista las instant\u00e1neas (se esperan 63 instant\u00e1neas en mi sistema)\n$ ls /mnt/test/stuff/.snap\n\nAhora ls se cuelga indefinidamente y el registro del kernel muestra el oops."}], "id": "CVE-2026-23201", "lastModified": "2026-02-18T17:52:22.253", "metrics": {}, "published": "2026-02-14T17:15:57.950", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c9af7339de419819cfc641d551675d38ff99abf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bc8dedae022ce3058659c3addef3ec4b41d15e00"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e258ed369c9e04caa7d2fd49785d753ae4034cb6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ceph: fix oops due to invalid pointer for kfree() in parse_longname()", "id": "2439939", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2439939"}, "csaw": false, "details": ["No description is available for this CVE."], "name": "CVE-2026-23201", "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": "2026-02-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23201\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23201\nhttps://lore.kernel.org/linux-cve-announce/2026021436-CVE-2026-23201-4530@gregkh/T"]}

{"created": "2026-02-16T09:43:32.036089+00:00", "updated": "2026-02-16T09:43:32.036185+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}