{"id":"CVE-2026-64147","state":"PUBLISHED","title":"pds_core: fix debugfs_lookup dentry leak and error handling","description":"In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: fix debugfs_lookup dentry leak and error handling\n\ndebugfs_lookup() returns a dentry with an elevated reference count that\nmust be released with dput(). The current code discards the returned\ndentry without calling dput(), causing a reference leak on every\nfirmware reset recovery.\n\nAdditionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup()\nreturns ERR_PTR(-ENODEV), not NULL. The current check passes for error\npointers and would call dput() on an invalid pointer, causing a crash.","publishedAt":"2026-07-19T15:40:38.198Z","updatedAt":"2026-07-19T15:40:38.198Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2bbf2b1c20f934a054172175ccbabcc01fe69ef6","status":"affected","lessThan":"60ef1675b652e912f3eb064767af4432393291fd","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"26e19622c485e53c3fdb299e822068a0542ddf0c","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"91d13e92b983e6c6d7631012c2e20ae8057de9f2","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"dc416e32baaeb620b9809e9e25fc7b30889686e9","versionType":"git"},{"version":"3ffe14c36985e3174933127c9efad82ac8f3fefb","status":"affected","versionType":"git"},{"version":"6.6.16","status":"affected","lessThan":"6.6.142","versionType":"semver"},{"version":"6.7.4","status":"affected","lessThan":"6.8","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/debugfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/debugfs.c"]}],"references":["https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd","https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c","https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2","https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32","https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64147.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64147","state":"PUBLISHED","datePublished":"2026-07-19T15:40:38.198Z","dateUpdated":"2026-07-19T15:40:38.198Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.037Z"},"containers":{"cna":{"title":"pds_core: fix debugfs_lookup dentry leak and error handling","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: fix debugfs_lookup dentry leak and error handling\n\ndebugfs_lookup() returns a dentry with an elevated reference count that\nmust be released with dput(). The current code discards the returned\ndentry without calling dput(), causing a reference leak on every\nfirmware reset recovery.\n\nAdditionally, when CONFIG_DEBUG_FS is disabled, debugfs_lookup()\nreturns ERR_PTR(-ENODEV), not NULL. The current check passes for error\npointers and would call dput() on an invalid pointer, causing a crash."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2bbf2b1c20f934a054172175ccbabcc01fe69ef6","status":"affected","lessThan":"60ef1675b652e912f3eb064767af4432393291fd","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"26e19622c485e53c3fdb299e822068a0542ddf0c","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"91d13e92b983e6c6d7631012c2e20ae8057de9f2","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32","versionType":"git"},{"version":"bc90fbe0c3182157d2be100a2f6c2edbb1820677","status":"affected","lessThan":"dc416e32baaeb620b9809e9e25fc7b30889686e9","versionType":"git"},{"version":"3ffe14c36985e3174933127c9efad82ac8f3fefb","status":"affected","versionType":"git"},{"version":"6.6.16","status":"affected","lessThan":"6.6.142","versionType":"semver"},{"version":"6.7.4","status":"affected","lessThan":"6.8","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/debugfs.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.6.142","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.92","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amd/pds_core/debugfs.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd"},{"url":"https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c"},{"url":"https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2"},{"url":"https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32"},{"url":"https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T15:40:38.198Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.16","versionEndExcluding":"6.6.142"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.12.92"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7.4"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}