Linux Kernel: Prevent stale status in pdsc_devcmd_wait (CVE-2026-64148)
CVE-2026-64148 Published on July 19, 2026
pds_core: fix error handling in pdsc_devcmd_wait
In the Linux kernel, the following vulnerability has been resolved:
pds_core: fix error handling in pdsc_devcmd_wait
Fix two cases where pdsc_devcmd_wait() returns stale success from
the completion register instead of an error:
1. FW crash: If firmware stops running, the wait loop breaks early with
running=false. The condition "if ((!done || timeout) && running)" is
false, so error handling is bypassed and stale status is returned.
Check !running first and return -ENXIO.
2. Timeout: If a command times out, err is set to -ETIMEDOUT but then
overwritten by pdsc_err_to_errno(status) which reads stale status.
Return -ETIMEDOUT immediately after cleaning up.
Both errors now propagate to pdsc_devcmd_locked() which queues
health_work for recovery.
Products Associated with CVE-2026-64148
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Affected Versions
Linux:- Version 45d76f492938cdc27ddadc16e1e75103f4cfbf56 and below 3231aff8ab26111c54e630b1a200fc43a729dd14 is affected.
- Version 45d76f492938cdc27ddadc16e1e75103f4cfbf56 and below 10ae3180095bbe2d378c5b1d6f2f2fd74dda3cc2 is affected.
- Version 45d76f492938cdc27ddadc16e1e75103f4cfbf56 and below 784dd2bdc622ed3cc6ef8e113aa1852e252de36f is affected.
- Version 45d76f492938cdc27ddadc16e1e75103f4cfbf56 and below 560d559324169fe0583d54c475b5329550a86f71 is affected.
- Version 45d76f492938cdc27ddadc16e1e75103f4cfbf56 and below 0e46b6635b03d29807f810c3b415c4755a3f958d is affected.
- Version 6.4 is affected.
- Before 6.4 is unaffected.
- Version 6.6.142, <= 6.6.* is unaffected.
- Version 6.12.92, <= 6.12.* is unaffected.
- Version 6.18.34, <= 6.18.* is unaffected.
- Version 7.0.11, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.