| Name | CVE-2026-46024 |
| Description | In the Linux kernel, the following vulnerability has been resolved: libceph: Prevent potential null-ptr-deref in ceph_handle_auth_reply() If a message of type CEPH_MSG_AUTH_REPLY contains a zero value for both protocol and result, this is currently not treated as an error. In case of ac->negotiating == true and ac->protocol > 0, this leads to setting ac->protocol = 0 and ac->ops = NULL. Thereafter, the check for ac->protocol != protocol returns false, and init_protocol() is not called. Subsequently, ac->ops->handle_reply() is called, which leads to a null pointer dereference, because ac->ops is still NULL. This patch changes the check for ac->protocol != protocol to !ac->protocol, as this also includes the case when the protocol was set to zero in the message. This causes the message to be treated as containing a bad auth protocol. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4665-1, DLA-4671-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| linux (PTS) | bullseye | 5.10.223-1 | vulnerable |
| bullseye (security) | 5.10.259-1 | vulnerable | |
| bookworm | 6.1.170-3 | vulnerable | |
| bookworm (security) | 6.1.176-1 | fixed | |
| trixie | 6.12.86-1 | fixed | |
| trixie (security) | 6.12.95-1 | fixed | |
| forky | 7.0.13-1 | fixed | |
| sid | 7.1.3-1 | fixed | |
| linux-6.1 (PTS) | bullseye (security) | 6.1.176-1~deb11u1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| linux | source | bookworm | 6.1.176-1 | DLA-4665-1 | ||
| linux | source | trixie | 6.12.86-1 | |||
| linux | source | (unstable) | 7.0.4-1 | |||
| linux-6.1 | source | bullseye | 6.1.176-1~deb11u1 | DLA-4671-1 |
https://git.kernel.org/linus/5199c125d25aeae8615c4fc31652cc0fe624338e (7.1-rc1)