CVE-2024-49872

In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix memfdpinfolios alloc race panic If memfdpinfolios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here: folio = memfdallocfoliomemfd, startidx; if ISERRfolio ret =...

CVE-2024-49872 mm/gup: fix memfd_pin_folios alloc race panic

In the Linux kernel, the following vulnerability has been resolved: mm/gup: fix memfdpinfolios alloc race panic If memfdpinfolios tries to create a hugetlb page, but someone else already did, then folio gets the value -EEXIST here: folio = memfdallocfoliomemfd, startidx; if ISERRfolio ret =...

CVE-2024-49872

The CVE-2024-49872 issue affects the Linux kernel in mm/gup where memfd_pin_folios can race when creating a hugetlb folio and another actor has already done so, leading to a -EEXIST and a panicking folio_put call if the same folio is used in the next loop iteration. The patch fixes the race by cl...