Affected: Linux

In the Linux kernel, the following vulnerability has been resolved:

libceph: reset sparse-read state in osd_fault()

When a fault occurs, the connection is abandoned, reestablished, and any pending operations are retried. The OSD client tracks the progress of a sparse-read reply using a separate state machine, largely independent of the messenger's state.

If a connection is lost mid-payload or the sparse-read state machine returns an error, the sparse-read state is not reset. The OSD client will then interpret the beginning of a new reply as the continuation of the old one. If this makes the sparse-read machinery enter a failure state, it may never recover, producing loops like:

libceph: [0] got 0 extents libceph: data len 142248331 != extent len 0 libceph: osd0 (1)...:6801 socket error on read libceph: data len 142248331 != extent len 0 libceph: osd0 (1)...:6801 socket error on read

Therefore, reset the sparse-read state in osd_fault(), ensuring retries start from a clean state.

kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache kernel: crypto: algif_aead - Revert to operating out-of-place kernel: crypto: algif_aead - Fix minimum RX size check for decryption

kernel: ceph: kernel: Ceph: exploit of hardcoded IVECs, in a misuse of AES, resulting in authentication bypass kernel: smc: Fix use-after-free in __pnet_find_base_ndev() kernel: smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match() kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state kernel: netfilter: ctnetlink: ensure safe access to master conntrack kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks kernel: mm/page_alloc: clear page->private in free_pages_prepare() kernel: RDMA/iwcm: Fix workqueue list corruption by removing work_list kernel: wifi: mac80211: remove station if connection prep fails kernel: wifi: mac80211: use safe list iteration in radar detect work kernel: Linux kernel: smb: client: reject userspace cifs.spnego descriptions kernel: Linux kernel: Use-After-Free in net/gro due to improper handling of zerocopy skbs kernel: net/sched: act_pedit: extend the writable skb range per key