debugobjects: Do not fill_pool() if pi_blocked_on

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Summary

CVECVE-2026-53327
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-01 14:16:40 UTC
Updated2026-07-04 12:17:01 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: debugobjects: Do not fill_pool() if pi_blocked_on On RT enabled kernels, fill_pool() ends up calling rtlock_lock(), which asserts if current::pi_blocked_on is set, because a task can obviously only block on one lock as otherwise the priority inheritenace chain gets corrupted. Prevent this by expanding the conditional to take current::pi_blocked_on into account.

Risk And Classification

EPSS: 0.001660000 probability, percentile 0.061380000 (date 2026-07-03)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4bedcc28469a24fe481a8a31b3584e6070457ddb 8a680d54f1adf3e3aa815578684556716fda6f0c git Not specified
CNA Linux Linux affected 4bedcc28469a24fe481a8a31b3584e6070457ddb a3383df76f0d7a597066df018409eb9e5e698064 git Not specified
CNA Linux Linux affected 4bedcc28469a24fe481a8a31b3584e6070457ddb 3f6a3b24ab7b9d51f6f4778254bef0e5847beb55 git Not specified
CNA Linux Linux affected 4bedcc28469a24fe481a8a31b3584e6070457ddb 3a408cae608d9c075dd3a9e5cfc03b3cb0726863 git Not specified
CNA Linux Linux affected 4bedcc28469a24fe481a8a31b3584e6070457ddb 33bee10644f8fff3b1a0187ad5ad34513e5e8e72 git Not specified
CNA Linux Linux affected 4bedcc28469a24fe481a8a31b3584e6070457ddb 5f41161059fd0f1bbf18c90f3180e38cc45a14eb git Not specified
CNA Linux Linux affected 5.15 Not specified
CNA Linux Linux unaffected 5.15 semver Not specified
CNA Linux Linux unaffected 6.1.177 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.144 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.95 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.37 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.13 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3a408cae608d9c075dd3a9e5cfc03b3cb0726863 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a3383df76f0d7a597066df018409eb9e5e698064 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/33bee10644f8fff3b1a0187ad5ad34513e5e8e72 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3f6a3b24ab7b9d51f6f4778254bef0e5847beb55 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5f41161059fd0f1bbf18c90f3180e38cc45a14eb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8a680d54f1adf3e3aa815578684556716fda6f0c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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