| Name | CVE-2024-46840 |
| 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, which -EUCLEAN is a more appropriate error code. Finally in walk_up_proc we have the same BUG_ON(refs == 0), so convert that to proper error handling. Also adjust the error message so we can actually do something with the information. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3912-1, DSA-5782-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.226-1 | fixed | |
| bookworm | 6.1.106-3 | vulnerable | |
| bookworm (security) | 6.1.112-1 | fixed | |
| trixie | 6.10.11-1 | fixed | |
| sid | 6.11.2-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | bullseye | 5.10.226-1 | DLA-3912-1 | ||
| linux | source | bookworm | 6.1.112-1 | DSA-5782-1 | ||
| linux | source | (unstable) | 6.10.11-1 |
https://git.kernel.org/linus/b8ccef048354074a548f108e51d0557d6adfd3a3 (6.11-rc1)