CVE-2025-39697NFS: Fix a race when updating an existing write
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Not yet received
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before 0ff42a32784e0f2cb46a46da8e9f473538c13e1b; from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before f230d40147cc37eb3aef4d50e2e2c06ea73d9a77; from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before c32e3c71aaa1c1ba05da88605e2ddd493c58794f; from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before 181feb41f0b268e6288bf9a7b984624d7fe2031d; from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before 92278ae36935a54e65fef9f8ea8efe7e80481ace; from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before 202a3432d21ac060629a760fff3b0a39859da3ea; from bd37d6fce184836bd5e7cd90ce40116a4fadaf2a before 76d2e3890fb169168c73f2e4f8375c7cc24a765e | CNA record |
Siemens SIMATIC CN 4100 siemens:simatic_cn_4100 (from the name) | before V5.0 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.5 | CISA ADP |
References
- https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1b
- https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77
- https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794f
- https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031d
- https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481ace
- https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3ea
- https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765e
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.