{"id":"CVE-2024-42084","summary":"ftruncate: pass a signed offset","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nftruncate: pass a signed offset\n\nThe old ftruncate() syscall, using the 32-bit off_t misses a sign\nextension when called in compat mode on 64-bit architectures.  As a\nresult, passing a negative length accidentally succeeds in truncating\nto file size between 2GiB and 4GiB.\n\nChanging the type of the compat syscall to the signed compat_off_t\nchanges the behavior so it instead returns -EINVAL.\n\nThe native entry point, the truncate() syscall and the corresponding\nloff_t based variants are all correct already and do not suffer\nfrom this mistake.","modified":"2026-04-02T12:17:42.254173Z","published":"2024-07-29T16:26:20.581Z","related":["ALSA-2024:7000","ALSA-2024:7001"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42084.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4b8e88e563b5f666446d002ad0dc1e6e8e7102b0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5ae6af68410bdad6181ec82104bb9985a7a6a0fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/836359247b0403e0634bfbc83e5bb8063fad287a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84bf6b64a1a0dfc6de7e1b1c776d58d608e7865a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/930a4c369f74da26816eaaa71b5888d29b759c27"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c329760749b5419769e57cb2be80955d2805f9c9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dbb226d81cd02cee140139c2369791e6f61f2007"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f531d4bc6c5588d713359e42ed65e46816d841d8"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42084.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42084"},{"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":"3f6d078d4accfff8b114f968259a060bfdc7c682"},{"fixed":"c329760749b5419769e57cb2be80955d2805f9c9"},{"fixed":"f531d4bc6c5588d713359e42ed65e46816d841d8"},{"fixed":"84bf6b64a1a0dfc6de7e1b1c776d58d608e7865a"},{"fixed":"dbb226d81cd02cee140139c2369791e6f61f2007"},{"fixed":"5ae6af68410bdad6181ec82104bb9985a7a6a0fa"},{"fixed":"836359247b0403e0634bfbc83e5bb8063fad287a"},{"fixed":"930a4c369f74da26816eaaa71b5888d29b759c27"},{"fixed":"4b8e88e563b5f666446d002ad0dc1e6e8e7102b0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42084.json"}}],"schema_version":"1.7.5"}