{"id":"CVE-2024-26878","title":"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   remov…","summary":"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   remov…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-362","CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 4.19.311","linux_kernel >= 4.20, < 5.4.273","linux_kernel >= 5.5, < 5.10.214","linux_kernel >= 5.11, < 5.15.153","linux_kernel >= 5.16, < 6.1.83","linux_kernel >= 6.2, < 6.6.23","linux_kernel >= 6.7, < 6.7.11","linux_kernel >= 6.8, < 6.8.2","debian_linux = 10.0"],"patched":["linux_kernel 6.8.2"],"published":"2024-04-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:17:27.880","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-26878","references":[{"url":"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1ca72a3de915f87232c9a4cb9bebbd3af8ed3e25","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/40a673b4b07efd6f74ff3ab60f38b26aa91ee5d5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/49669f8e7eb053f91d239df7b1bfb4500255a9d0","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/61380537aa6dd32d8a723d98b8f1bd1b11d8fee0","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/6afc9f4434fa8063aa768c2bf5bf98583aee0877","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/7f9e833fc0f9b47be503af012eb5903086939754","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/8514899c1a4edf802f03c408db901063aa3f05a1","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/d0aa72604fbd80c8aabb46eda00535ed35570f1f","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/f2649d98aa9ca8623149b3cb8df00c944f5655c7","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00189,"epssPercentile":0.07947,"ingestedAt":"2026-10-15T03:30:12.655Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-09-10T15:48:25.754517Z"},"slug":"CVE-2024-26878","body":"## Overview\n\nIn 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.\n\n## Affected\n\n- `linux_kernel < 4.19.311`\n- `linux_kernel >= 4.20, < 5.4.273`\n- `linux_kernel >= 5.5, < 5.10.214`\n- `linux_kernel >= 5.11, < 5.15.153`\n- `linux_kernel >= 5.16, < 6.1.83`\n- `linux_kernel >= 6.2, < 6.6.23`\n- `linux_kernel >= 6.7, < 6.7.11`\n- `linux_kernel >= 6.8, < 6.8.2`\n- `debian_linux = 10.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.8.2`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}