{"id":"CVE-2026-53323","state":"PUBLISHED","title":"net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops\n\nDSA replaces the conduit (master) device's ethtool_ops with its own\nwrappers that aggregate stats from both the conduit and DSA switch\nports. Taking the lock again inside the DSA wrappers causes a deadlock.\n\nStumbled upon this when booting qemu with fbnic and CONFIG_NET_DSA_LOOP=y\n(which looks like some kind of testing device that auto-populates the ports\nof eth0). `ethtool -i` is enough to deadlock. This means we have basically zero\ncoverage for DSA stuff with real ops locked devs.\n\nRemove the redundant netdev_lock_ops()/netdev_unlock_ops() calls from\nthe DSA conduit ethtool wrappers.","publishedAt":"2026-06-26T19:41:13.926Z","updatedAt":"2026-06-26T19:41:13.926Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2bcf4772e45adb00649a4e9cbff14b08a144f9e3","status":"affected","lessThan":"74d64ae4254e99ef8c8215b057a76edac82c5f99","versionType":"git"},{"version":"2bcf4772e45adb00649a4e9cbff14b08a144f9e3","status":"affected","lessThan":"abe91fd045874d21834482adcd7a9693e7377056","versionType":"git"},{"version":"2bcf4772e45adb00649a4e9cbff14b08a144f9e3","status":"affected","lessThan":"0f99e0c3e19badaf3fdced0d3feba623e59eed41","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/dsa/conduit.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","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":["net/dsa/conduit.c"]}],"references":["https://git.kernel.org/stable/c/74d64ae4254e99ef8c8215b057a76edac82c5f99","https://git.kernel.org/stable/c/abe91fd045874d21834482adcd7a9693e7377056","https://git.kernel.org/stable/c/0f99e0c3e19badaf3fdced0d3feba623e59eed41"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53323.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53323","state":"PUBLISHED","datePublished":"2026-06-26T19:41:13.926Z","dateUpdated":"2026-06-26T19:41:13.926Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.398Z"},"containers":{"cna":{"title":"net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops\n\nDSA replaces the conduit (master) device's ethtool_ops with its own\nwrappers that aggregate stats from both the conduit and DSA switch\nports. Taking the lock again inside the DSA wrappers causes a deadlock.\n\nStumbled upon this when booting qemu with fbnic and CONFIG_NET_DSA_LOOP=y\n(which looks like some kind of testing device that auto-populates the ports\nof eth0). `ethtool -i` is enough to deadlock. This means we have basically zero\ncoverage for DSA stuff with real ops locked devs.\n\nRemove the redundant netdev_lock_ops()/netdev_unlock_ops() calls from\nthe DSA conduit ethtool wrappers."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"2bcf4772e45adb00649a4e9cbff14b08a144f9e3","status":"affected","lessThan":"74d64ae4254e99ef8c8215b057a76edac82c5f99","versionType":"git"},{"version":"2bcf4772e45adb00649a4e9cbff14b08a144f9e3","status":"affected","lessThan":"abe91fd045874d21834482adcd7a9693e7377056","versionType":"git"},{"version":"2bcf4772e45adb00649a4e9cbff14b08a144f9e3","status":"affected","lessThan":"0f99e0c3e19badaf3fdced0d3feba623e59eed41","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/dsa/conduit.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","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":["net/dsa/conduit.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/74d64ae4254e99ef8c8215b057a76edac82c5f99"},{"url":"https://git.kernel.org/stable/c/abe91fd045874d21834482adcd7a9693e7377056"},{"url":"https://git.kernel.org/stable/c/0f99e0c3e19badaf3fdced0d3feba623e59eed41"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-26T19:41:13.926Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}