| Name | CVE-2021-41229 |
| Description | BlueZ is a Bluetooth protocol stack for Linux. In affected versions a vulnerability exists in sdp_cstate_alloc_buf which allocates memory which will always be hung in the singly linked list of cstates and will not be freed. This will cause a memory leak over time. The data can be a very large object, which can be caused by an attacker continuously sending sdp packets and this may cause the service of the target device to crash. |
| 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-2827-1, DLA-3157-1, DLA-3879-1 |
| Debian Bugs | 1000262 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bluez (PTS) | bullseye | 5.55-3.1+deb11u1 | vulnerable |
| bullseye (security) | 5.55-3.1+deb11u2 | fixed | |
| bookworm | 5.66-1+deb12u2 | fixed | |
| bookworm (security) | 5.66-1+deb12u1 | fixed | |
| sid, trixie | 5.82-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bluez | source | stretch | 5.43-2+deb9u5 | DLA-2827-1 | ||
| bluez | source | buster | 5.50-1.2~deb10u3 | DLA-3157-1 | ||
| bluez | source | bullseye | 5.55-3.1+deb11u2 | DLA-3879-1 | ||
| bluez | source | (unstable) | 5.62-2 | 1000262 |
https://github.com/bluez/bluez/security/advisories/GHSA-3fqg-r8j5-f5xq
Introduced by: https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=d939483328489fb835bb425d36f7c7c73d52c388 (4.0)
Fixed by: https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=e79417ed7185b150a056d4eb3a1ab528b91d2fc0