In the Linux kernel, the following vulnerability has been resolved:
libceph: bound get_version reply decode to front len
handle_get_version_reply() uses msg->front_alloc_len as the decode boundary for MON_GET_VERSION_REPLY. That is the size of the reused reply buffer, not the number of bytes actually received.
A truncated reply can therefore pass ceph_decode_need() and decode the second u64 from stale tail bytes left in the buffer by an earlier message, causing an uninitialized memory read.
Use msg->front.iov_len as the receive-side decode boundary, matching other libceph reply handlers and limiting decoding to the bytes that were actually read from the wire.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade bpftool6.12Upgrade kernel6.12-toolsUpgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade perf6.12Upgrade kernel6.12-headersUpgrade kernel-livepatch-6.12.103-127.188Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-develUpgrade kernel6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.12Upgrade kernel6.12-modules-extra | Sep 1, 2026 | Aug 12, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 13, 2026 | Aug 13, 2026 |
| Redhat_linux | — | No solution exists | Aug 17, 2026 | Aug 12, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 17, 2026 | Aug 12, 2026 |
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