{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2024-26878", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.185Z", "datePublished": "2024-04-17T10:27:35.838Z", "dateUpdated": "2024-11-05T09:17:27.891Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:17:27.891Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nquota: Fix potential NULL pointer dereference\n\nBelow race may cause NULL pointer dereference\n\nP1\t\t\t\t\tP2\ndquot_free_inode\t\t\tquota_off\n\t\t\t\t\t drop_dquot_ref\n\t\t\t\t\t remove_dquot_ref\n\t\t\t\t\t dquots = i_dquot(inode)\n dquots = i_dquot(inode)\n srcu_read_lock\n dquots[cnt]) != NULL (1)\n\t\t\t\t\t dquots[type] = NULL (2)\n spin_lock(&dquots[cnt]->dq_dqb_lock) (3)\n ....\n\nIf dquot_free_inode(or other routines) checks inode's quota pointers (1)\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\ndereference will be triggered.\n\nSo let's fix it by using a temporary pointer to avoid this issue."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/quota/dquot.c"], "versions": [{"version": "1da177e4c3f4", "lessThan": "8514899c1a4e", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "49669f8e7eb0", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "61380537aa6d", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "1ca72a3de915", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "7f9e833fc0f9", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", 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"2024-11-05T09:17:27.891Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26878", "state": "PUBLISHED", "dateUpdated": "2024-11-05T09:17:27.891Z", "dateReserved": "2024-02-19T14:20:24.185Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-17T10:27:35.838Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nquota: Fix potential NULL pointer dereference\n\nBelow race may cause NULL pointer dereference\n\nP1\t\t\t\t\tP2\ndquot_free_inode\t\t\tquota_off\n\t\t\t\t\t drop_dquot_ref\n\t\t\t\t\t remove_dquot_ref\n\t\t\t\t\t dquots = i_dquot(inode)\n dquots = i_dquot(inode)\n srcu_read_lock\n dquots[cnt]) != NULL (1)\n\t\t\t\t\t dquots[type] = NULL (2)\n spin_lock(&dquots[cnt]->dq_dqb_lock) (3)\n ....\n\nIf dquot_free_inode(or other routines) checks inode's quota pointers (1)\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\ndereference will be triggered.\n\nSo let's fix it by using a temporary pointer to avoid this issue."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cuota: corrige una posible desreferencia del puntero NULL La siguiente carrera puede causar una desreferencia del puntero NULL P1 P2 dquot_free_inode quote_off drop_dquot_ref remove_dquot_ref dquots = i_dquot(inode) dquots = i_dquot(inode) srcu_read_lock dquots[cnt]) != NULL (1) dquots[tipo] = NULL (2) spin_lock(&dquots[cnt]->dq_dqb_lock) (3) .... Si dquot_free_inode(u otras rutinas) verifica los punteros de cuota del inodo (1) antes de que cuota_off lo establezca a NULL(2) y usarlo (3) despu\u00e9s de eso, se activar\u00e1 la desreferencia del puntero NULL. Entonces, solucion\u00e9moslo usando un puntero temporal para evitar este problema."}], "id": "CVE-2024-26878", "lastModified": "2024-11-21T09:03:16.660", "metrics": {}, "published": "2024-04-17T11:15:09.870", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:5102", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.16.1.rt7.357.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:5101", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.16.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-08-08T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}], "bugzilla": {"description": "kernel: quota: Fix potential NULL pointer dereference", "id": "2275694", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2275694"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-362->CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nquota: Fix potential NULL pointer dereference\nBelow race may cause NULL pointer dereference\nP1P2\ndquot_free_inodequota_off\ndrop_dquot_ref\nremove_dquot_ref\ndquots = i_dquot(inode)\ndquots = i_dquot(inode)\nsrcu_read_lock\ndquots[cnt]) != NULL (1)\ndquots[type] = NULL (2)\nspin_lock(&dquots[cnt]->dq_dqb_lock) (3)\n....\nIf dquot_free_inode(or other routines) checks inode's quota pointers (1)\nbefore quota_off sets it to NULL(2) and use it (3) after that, NULL pointer\ndereference will be triggered.\nSo let's fix it by using a temporary pointer to avoid this issue."], "name": "CVE-2024-26878", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26878\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26878\nhttps://lore.kernel.org/linux-cve-announce/2024041740-CVE-2024-26878-5748@gregkh/T"], "threat_severity": "Low", "upstream_fix": "kernel 4.19.311, kernel 5.4.273, kernel 5.10.214, kernel 5.15.153, kernel 6.1.83, kernel 6.6.23, kernel 6.7.11, kernel 6.8.2, kernel 6.9-rc1"}