{"id":"CVE-2022-50293","summary":"btrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: do not BUG_ON() on ENOMEM when dropping extent items for a range\n\nIf we get -ENOMEM while dropping file extent items in a given range, at\nbtrfs_drop_extents(), due to failure to allocate memory when attempting to\nincrement the reference count for an extent or drop the reference count,\nwe handle it with a BUG_ON(). This is excessive, instead we can simply\nabort the transaction and return the error to the caller. In fact most\ncallers of btrfs_drop_extents(), directly or indirectly, already abort\nthe transaction if btrfs_drop_extents() returns any error.\n\nAlso, we already have error paths at btrfs_drop_extents() that may return\n-ENOMEM and in those cases we abort the transaction, like for example\nanything that changes the b+tree may return -ENOMEM due to a failure to\nallocate a new extent buffer when COWing an existing extent buffer, such\nas a call to btrfs_duplicate_item() for example.\n\nSo replace the BUG_ON() calls with proper logic to abort the transaction\nand return the error.","modified":"2026-04-02T08:28:23.396350Z","published":"2025-09-15T14:45:49.338Z","related":["SUSE-SU-2025:4189-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50293.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/162d053e15fe985f754ef495a96eb3db970c43ed"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1baf3370e2dc5e6bd1368348736189457dab2a27"},{"type":"WEB","url":"https://git.kernel.org/stable/c/50f993da945074b2a069da099a0331b23a0c89a0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7fbcb635c8fc927d139f3302babcf1b42c09265c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50293.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50293"},{"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":"39279cc3d2704cfbf9c35dcb5bdd392159ae4625"},{"fixed":"50f993da945074b2a069da099a0331b23a0c89a0"},{"fixed":"7fbcb635c8fc927d139f3302babcf1b42c09265c"},{"fixed":"1baf3370e2dc5e6bd1368348736189457dab2a27"},{"fixed":"162d053e15fe985f754ef495a96eb3db970c43ed"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50293.json"}}],"schema_version":"1.7.5"}