{"id":"CVE-2026-53261","state":"PUBLISHED","title":"devlink: Release nested relation on devlink free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndevlink: Release nested relation on devlink free\n\ndevlink relation state is normally released from devl_unregister(), which\ncalls devlink_rel_put(). This misses devlink instances that get a nested\nrelation before registration and then fail probe before devl_register() is\nreached.\n\nThat flow can happen for SFs. The child devlink gets linked to its\nparent before registration, then a later probe error calls devlink_free()\ndirectly. Since the instance was never registered, devl_unregister() is not\ncalled and devlink->rel is leaked.\n\nRelease any pending relation from devlink_free() as well. The registered\npath is unchanged because devl_unregister() already clears devlink->rel\nbefore devlink_free() runs.","publishedAt":"2026-06-25T08:39:49.891Z","updatedAt":"2026-06-25T08:39:49.891Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"a9137286884703113b1c9e6403bd6d7d97b14754","versionType":"git"},{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"927f96861f939c0b517d13ed27bf4fabbfc1cfb3","versionType":"git"},{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"11324d52b0c63f4f202b35793c6507a575e9a689","versionType":"git"},{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"3522b21fd7e1863d0734537737bd59f1b90d0190","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/devlink/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","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/devlink/core.c"]}],"references":["https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754","https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3","https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689","https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53261.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53261","state":"PUBLISHED","datePublished":"2026-06-25T08:39:49.891Z","dateUpdated":"2026-06-25T08:39:49.891Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.394Z"},"containers":{"cna":{"title":"devlink: Release nested relation on devlink free","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndevlink: Release nested relation on devlink free\n\ndevlink relation state is normally released from devl_unregister(), which\ncalls devlink_rel_put(). This misses devlink instances that get a nested\nrelation before registration and then fail probe before devl_register() is\nreached.\n\nThat flow can happen for SFs. The child devlink gets linked to its\nparent before registration, then a later probe error calls devlink_free()\ndirectly. Since the instance was never registered, devl_unregister() is not\ncalled and devlink->rel is leaked.\n\nRelease any pending relation from devlink_free() as well. The registered\npath is unchanged because devl_unregister() already clears devlink->rel\nbefore devlink_free() runs."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"a9137286884703113b1c9e6403bd6d7d97b14754","versionType":"git"},{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"927f96861f939c0b517d13ed27bf4fabbfc1cfb3","versionType":"git"},{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"11324d52b0c63f4f202b35793c6507a575e9a689","versionType":"git"},{"version":"c137743bce02b18c1537d4681aa515f7b80bf0a8","status":"affected","lessThan":"3522b21fd7e1863d0734537737bd59f1b90d0190","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/devlink/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.7","versionType":"semver"},{"version":"6.12.94","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.36","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","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/devlink/core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754"},{"url":"https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3"},{"url":"https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689"},{"url":"https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-25T08:39:49.891Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.94"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.18.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}