by Kastro CVE-2024-49855
Linux Linux — nbd: fix race between timeout and normal completion
Description · from the CVE record
In the Linux kernel, the following vulnerability has been resolved: nbd: fix race between timeout and normal completion If request timetout is handled by nbd_requeue_cmd(), normal completion has to be stopped for avoiding to complete this requeued request, other use-after-free can be triggered. Fix the race by clearing NBD_CMD_INFLIGHT in nbd_requeue_cmd(), meantime make sure that cmd->lock is grabbed for clearing the flag and the requeue.
Affected
ProductAffectedFixed inSource
Linux2895f1831e911ca87d4efdf43e35eb72a0c7e66e – < 9c25faf72d780a9c71081710cd48759d61ff6e9b9c25faf72d780a9c71081710cd48759d61ff6e9bCNA
Linux2895f1831e911ca87d4efdf43e35eb72a0c7e66e – < 6e73b946a379a1dfbb62626af93843bdfb53753d6e73b946a379a1dfbb62626af93843bdfb53753dCNA
Linux2895f1831e911ca87d4efdf43e35eb72a0c7e66e – < 5236ada8ebbd9e7461f17477357582f5be4f46f75236ada8ebbd9e7461f17477357582f5be4f46f7CNA
Linux2895f1831e911ca87d4efdf43e35eb72a0c7e66e – < 9a74c3e6c0d686c26ba2aab66d15ddb89dc139cc9a74c3e6c0d686c26ba2aab66d15ddb89dc139ccCNA
Linux2895f1831e911ca87d4efdf43e35eb72a0c7e66e – < c9ea57c91f03bcad415e1a20113bdb2077bcf990c9ea57c91f03bcad415e1a20113bdb2077bcf990CNA
Linuxcdf62c535a9bfd5ff0eef4b91669da39d8abc0c3–CNA
Linux5171ef20bae852ff38f4cfdb368bcdcc744776d0–CNA
Linux5.17.15 – < 5.185.18CNA
Linux5.18.4 – < 5.195.19CNA
Linux5.19–CNA
Scores by source
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial