CVE-2025-39697
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…
Does this matter?
Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own.
Description
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 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.15% probability · 4th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0ff42a32784e0f2cb46a46da8e9f473538c13e1bPatch
- https://git.kernel.org/stable/c/181feb41f0b268e6288bf9a7b984624d7fe2031dPatch
- https://git.kernel.org/stable/c/202a3432d21ac060629a760fff3b0a39859da3eaPatch
- https://git.kernel.org/stable/c/76d2e3890fb169168c73f2e4f8375c7cc24a765ePatch
- https://git.kernel.org/stable/c/92278ae36935a54e65fef9f8ea8efe7e80481acePatch
- https://git.kernel.org/stable/c/c32e3c71aaa1c1ba05da88605e2ddd493c58794fPatch
- https://git.kernel.org/stable/c/f230d40147cc37eb3aef4d50e2e2c06ea73d9a77Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.