CVE-2025-21795
NFSD: fix hang in nfsd4_shutdown_callback
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
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.
Michael Randrianantenaina discovered that the Bluetooth driver in the Linux Kernel contained an improper access control vulnerability. A nearby attacker could use this to connect a rougue device and possibly execute arbitrary code. It was discovered that the CIFS network file system implementation in the Linux kernel did not properly verify the target namespace when handling upcalls. An attacker could use this to expose sensitive information.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-12-29 CVE Reserved
- 2025-02-27 CVE Published
- 2025-05-04 CVE Updated
- 2025-06-29 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/67ef9e5fd737eab2495f2586df7e9ea30caa1b77 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/26540b8940a2e21582afa61a6fb8af87310bac72 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/66af25799940b26efd41ea6e648f75c41a48a2c2 | Vuln. Introduced |
| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10.220 < 5.10.235 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.220 < 5.10.235" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15.154 < 5.15.179 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15.154 < 5.15.179" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.1.129 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.1.129" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.6.79 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.6.79" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.12.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.12.16" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.13.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.13.4" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.19 < 6.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.19 < 6.14" | en |
Affected
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