CVE-2026-23053

Summary

In the Linux kernel, the following vulnerability has been resolved:

NFS: Fix a deadlock involving nfs_release_folio()

Wang Zhaolong reports a deadlock involving NFSv4.1 state recovery waiting on kthreadd, which is attempting to reclaim memory by calling nfs_release_folio(). The latter cannot make progress due to state recovery being needed.

It seems that the only safe thing to do here is to kick off a writeback of the folio, without waiting for completion, or else kicking off an asynchronous commit.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux96780ca55e3cbf4f150fd5a833a61492c9947b5b < a4810f8beb0122f032f10735f98d257aa6064f4caffected
LinuxLinux96780ca55e3cbf4f150fd5a833a61492c9947b5b < 49d352bc263fe4a834233338bfaad31b3109addfaffected
LinuxLinux96780ca55e3cbf4f150fd5a833a61492c9947b5b < 19b4d9ab5e77843eac0429c019470c02f8710b55affected
LinuxLinux96780ca55e3cbf4f150fd5a833a61492c9947b5b < cce0be6eb4971456b703aaeafd571650d314bccaaffected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.6.130 <= 6.6.*unaffected
LinuxLinux6.12.67 <= 6.12.*unaffected
LinuxLinux6.18.7 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

References