CVE-2024-46840 — Double Free in Linux
Severity
5.5MEDIUMNVD
OSV8.8OSV7.1
EPSS
0.0%
top 99.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 27
Latest updateAug 14
Description
In the Linux kernel, the following vulnerability has been resolved:
btrfs: clean up our handling of refs == 0 in snapshot delete
In reada we BUG_ON(refs == 0), which could be unkind since we aren't
holding a lock on the extent leaf and thus could get a transient
incorrect answer. In walk_down_proc we also BUG_ON(refs == 0), which
could happen if we have extent tree corruption. Change that to return
-EUCLEAN. In do_walk_down() we catch this case and handle it correctly,
however we return -EIO, …
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6