{"id":"CVE-2025-21844","summary":"smb: client: Add check for next_buffer in receive_encrypted_standard()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: Add check for next_buffer in receive_encrypted_standard()\n\nAdd check for the return value of cifs_buf_get() and cifs_small_buf_get()\nin receive_encrypted_standard() to prevent null pointer dereference.","modified":"2026-04-16T04:36:45.543938102Z","published":"2025-03-12T09:42:00.435Z","related":["ALSA-2025:20095","ALSA-2025:20518","SUSE-SU-2025:01919-1","SUSE-SU-2025:01951-1","SUSE-SU-2025:01967-1","SUSE-SU-2025:1177-1","SUSE-SU-2025:1178-1","SUSE-SU-2025:1180-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","USN-7521-2"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21844.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24e8e4523d3071bc5143b0db9127d511489f7b3b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96"},{"type":"WEB","url":"https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f277e479eea3d1aa18bc712abe1d2bf3dece2e30"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f618aeb6cad2307e48a641379db610abcf593edf"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21844.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21844"},{"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":"b03c8099a738a04d2343547ae6a04e5f0f63d3fa"},{"fixed":"f277e479eea3d1aa18bc712abe1d2bf3dece2e30"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"858e73ff25639a0cc1f6f8d2587b62c045867e41"},{"fixed":"f618aeb6cad2307e48a641379db610abcf593edf"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"9f528a8e68327117837b5e28b096f52af4c26a05"},{"fixed":"24e8e4523d3071bc5143b0db9127d511489f7b3b"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"534733397da26de0303057ce0b93a22bda150365"},{"fixed":"9e5d99a4cf2e23c716b44862975548415fae5391"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"eec04ea119691e65227a97ce53c0da6b9b74b0b7"},{"fixed":"a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd"},{"fixed":"554736b583f529ee159aa95af9a0cbc12b5ffc96"},{"fixed":"860ca5e50f73c2a1cef7eefc9d39d04e275417f7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21844.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"}]}