{"id":"CVE-2025-39697","revision":null,"records":[{"revision":"8dd584fdf9f54bfda7936980314f5b39","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-39697","aliases":[],"title":"NFS: Fix a race when updating an existing write","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFS: Fix a race when updating an existing write\n\nAfter nfs_lock_and_join_requests() tests for whether the request is\nstill attached to the mapping, nothing prevents a call to\nnfs_inode_remove_request() from succeeding until we actually lock the\npage group.\nThe reason is that whoever called nfs_inode_remove_request() doesn't\nnecessarily have a lock on the page group head.\n\nSo in order to avoid races, let's take the page group lock earlier in\nnfs_lock_and_join_requests(), and hold it across the removal of the\nrequest in nfs_inode_remove_request().","state":0,"publishedAt":"2025-09-05T17:21:03.178+00:00","modifiedAt":"2026-10-15T01:08:03.87+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/nfs/pagelist.c\",\n \"fs/nfs/write.c\",\n \"include/linux/nfs_page.h\"\n ],\n \"versions\": [\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"0ff42a32784e0f2cb46a46da8e9f473538c13e1b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"f230d40147cc37eb3aef4d50e2e2c06ea73d9a77\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"c32e3c71aaa1c1ba05da88605e2ddd493c58794f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"181feb41f0b268e6288bf9a7b984624d7fe2031d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"92278ae36935a54e65fef9f8ea8efe7e80481ace\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"202a3432d21ac060629a760fff3b0a39859da3ea\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"bd37d6fce184836bd5e7cd90ce40116a4fadaf2a\",\n \"lessThan\": \"76d2e3890fb169168c73f2e4f8375c7cc24a765e\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/nfs/pagelist.c\",\n \"fs/nfs/write.c\",\n \"include/linux/nfs_page.h\"\n ],\n \"versions\": [\n {\n \"version\": \"4.14\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.14\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.242\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.191\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.150\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.104\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.44\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.16.4\",\n \"lessThanOrEqual\": \"6.16.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.17\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-39697","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-39697","identifiers":["CVE-2025-39697"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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