{"id":"CVE-2026-53327","state":"PUBLISHED","title":"debugobjects: Do not fill_pool() if pi_blocked_on","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndebugobjects: Do not fill_pool() if pi_blocked_on\n\nOn RT enabled kernels, fill_pool() ends up calling rtlock_lock(), which\nasserts if current::pi_blocked_on is set, because a task can obviously only\nblock on one lock as otherwise the priority inheritenace chain gets\ncorrupted.\n\nPrevent this by expanding the conditional to take current::pi_blocked_on\ninto account.","publishedAt":"2026-07-01T13:32:13.493Z","updatedAt":"2026-07-04T11:51:05.892Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"8a680d54f1adf3e3aa815578684556716fda6f0c","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"a3383df76f0d7a597066df018409eb9e5e698064","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"3f6a3b24ab7b9d51f6f4778254bef0e5847beb55","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"3a408cae608d9c075dd3a9e5cfc03b3cb0726863","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"33bee10644f8fff3b1a0187ad5ad34513e5e8e72","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"5f41161059fd0f1bbf18c90f3180e38cc45a14eb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/debugobjects.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.37","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":["lib/debugobjects.c"]}],"references":["https://git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0c","https://git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064","https://git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55","https://git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863","https://git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72","https://git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14eb"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53327.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53327","state":"PUBLISHED","datePublished":"2026-07-01T13:32:13.493Z","dateUpdated":"2026-07-04T11:51:05.892Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.398Z"},"containers":{"cna":{"title":"debugobjects: Do not fill_pool() if pi_blocked_on","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndebugobjects: Do not fill_pool() if pi_blocked_on\n\nOn RT enabled kernels, fill_pool() ends up calling rtlock_lock(), which\nasserts if current::pi_blocked_on is set, because a task can obviously only\nblock on one lock as otherwise the priority inheritenace chain gets\ncorrupted.\n\nPrevent this by expanding the conditional to take current::pi_blocked_on\ninto account."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"8a680d54f1adf3e3aa815578684556716fda6f0c","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"a3383df76f0d7a597066df018409eb9e5e698064","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"3f6a3b24ab7b9d51f6f4778254bef0e5847beb55","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"3a408cae608d9c075dd3a9e5cfc03b3cb0726863","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"33bee10644f8fff3b1a0187ad5ad34513e5e8e72","versionType":"git"},{"version":"4bedcc28469a24fe481a8a31b3584e6070457ddb","status":"affected","lessThan":"5f41161059fd0f1bbf18c90f3180e38cc45a14eb","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["lib/debugobjects.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.1.177","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.37","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":["lib/debugobjects.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0c"},{"url":"https://git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064"},{"url":"https://git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55"},{"url":"https://git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863"},{"url":"https://git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72"},{"url":"https://git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14eb"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-04T11:51:05.892Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.177"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}