{"id":"CVE-2024-56756","summary":"nvme-pci: fix freeing of the HMB descriptor table","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix freeing of the HMB descriptor table\n\nThe HMB descriptor table is sized to the maximum number of descriptors\nthat could be used for a given device, but __nvme_alloc_host_mem could\nbreak out of the loop earlier on memory allocation failure and end up\nusing less descriptors than planned for, which leads to an incorrect\nsize passed to dma_free_coherent.\n\nIn practice this was not showing up because the number of descriptors\ntends to be low and the dma coherent allocator always allocates and\nfrees at least a page.","modified":"2026-03-20T12:41:00.664712Z","published":"2024-12-29T11:30:20.516Z","related":["SUSE-SU-2025:0117-1","SUSE-SU-2025:0153-1","SUSE-SU-2025:0154-1","SUSE-SU-2025:0236-1","SUSE-SU-2025:0289-1","SUSE-SU-2025:0556-1","SUSE-SU-2025:0577-1","SUSE-SU-2025:0577-2","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1","USN-7276-1","USN-7277-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56756.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3c2fb1ca8086eb139b2a551358137525ae8e0d7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/452f9ddd12bebc04cef741e8ba3806bf0e1fd015"},{"type":"WEB","url":"https://git.kernel.org/stable/c/582d9ed999b004fb1d415ecbfa86d4d8df455269"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6d0f599db73b099aa724a12736369c4d4d92849d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/869cf50b9c9d1059f5223f79ef68fc0bc6210095"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac22240540e0c5230d8c4138e3778420b712716a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cee3bff51a35cab1c5d842d409a7b11caefe2386"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fb96d5cfa97a7363245b3dd523f475b04296d87b"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56756.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56756"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"87ad72a59a38d1df217cfd95bc222a2edfe5d399"},{"fixed":"ac22240540e0c5230d8c4138e3778420b712716a"},{"fixed":"452f9ddd12bebc04cef741e8ba3806bf0e1fd015"},{"fixed":"869cf50b9c9d1059f5223f79ef68fc0bc6210095"},{"fixed":"fb96d5cfa97a7363245b3dd523f475b04296d87b"},{"fixed":"cee3bff51a35cab1c5d842d409a7b11caefe2386"},{"fixed":"6d0f599db73b099aa724a12736369c4d4d92849d"},{"fixed":"582d9ed999b004fb1d415ecbfa86d4d8df455269"},{"fixed":"3c2fb1ca8086eb139b2a551358137525ae8e0d7a"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-56756.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}