In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate the RX channel on TX prepare failure path When… (CVE-2026-64303)
Source GCVE Database
No CVSS score published yet
- Exploitation
Not in CISA KEV, no exploitation reported
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 52% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
What to do
AI-suggested
A fix has been implemented to terminate the RX DMA channel on TX prepare failure. Users should apply the official Linux kernel update that includes this patch to remediate the vulnerability. Patch status is not explicitly confirmed in the provided data; check the vendor or kernel mailing list advisories for the exact fixed versions and update accordingly.
Description
In the Linux kernel, the following vulnerability has been resolved: spi: fsl-lpspi: terminate the RX channel on TX prepare failure path When dmaengine_prep_slave_sg() fails for the TX channel, the error path terminates the TX DMA channel but leaves the RX channel running. Since the RX channel was already submitted and issued prior to preparing the TX descriptor, returning -EINVAL causes the SPI core to unmap the DMA buffers while the RX DMA engine continues writing to them, leading to potential memory corruption or use-after-free. Terminate the RX channel before returning on the TX prepare failure path.
Impact
Potential memory corruption or use-after-free conditions in the Linux kernel's SPI driver can lead to system instability or crashes. No information about exploitation in the wild is available.
References
- nvd.nist.gov/vuln/detail/CVE-2026-64303 (opens in a new tab)
- git.kernel.org/stable/c/01980b5da56e573d62798d0ff6c86bcaa2b22cbe (opens in a new tab)
- git.kernel.org/stable/c/808033d80d5c9f8adf7e8de9317389270ce13430 (opens in a new tab)
- git.kernel.org/stable/c/9d000bdd250d649a11cd7f733175686877344582 (opens in a new tab)
- git.kernel.org/stable/c/ad370d1c7a9a832f77b2341513cd31188c9443af (opens in a new tab)
- git.kernel.org/stable/c/af39a2698f69b584d14a00cffe0f51a2caa15337 (opens in a new tab)
- git.kernel.org/stable/c/cce2063404b2341e7b2bbf85eddfcd70a31a0033 (opens in a new tab)
- git.kernel.org/stable/c/d5c1060218a3749c8a18b36f8169d910fce20639 (opens in a new tab)
- git.kernel.org/stable/c/e65505d91fa036a238968e4c10744244d1b968c4 (opens in a new tab)