CVE-2025-21795: falha de alta gravidade em Linux
NFSD: fix hang in nfsd4_shutdown_callback
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 0.7%
In the Linux kernel, the following vulnerability has been resolved:
NFSD: fix hang in nfsd4_shutdown_callback
If nfs4_client is in courtesy state then there is no point to send
the callback. This causes nfsd4_shutdown_callback to hang since
cl_cb_inflight is not 0. This hang lasts about 15 minutes until TCP
notifies NFSD that the connection was dropped.
This patch modifies nfsd4_run_cb_work to skip the RPC call if
nfs4_client is in courtesy state.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
Linux · LinuxCVEs relacionadas — Linux
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Referências
https://cert-portal.siemens.com/productcert/html/ssa-019113.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-457936.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-784472.htmlhttps://git.kernel.org/stable/c/036ac2778f7b28885814c6fbc07e156ad1624d03https://git.kernel.org/stable/c/23ad7797c74cd8f7f90617f1e59a8703e2b43908https://git.kernel.org/stable/c/38d345f612503b850c2973e5a879f88e441b34d7https://git.kernel.org/stable/c/abed68027ea3ab893ac85cc46a00e2e64a324239https://git.kernel.org/stable/c/cedfbb92cf97a6bff3d25633001d9c44442ee854https://git.kernel.org/stable/c/e88d2451cd42e025465d6b51fd716a47b0b3800dhttps://git.kernel.org/stable/c/efa8a261c575f816c7e79a87aeb3ef8a0bd6b221