CVE-2026-53315 is a vulnerability in Linux Kernel
Published on June 26, 2026
drm/amd/ras: Fix NULL deref in ras_core_get_utc_second_timestamp()
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/ras: Fix NULL deref in ras_core_get_utc_second_timestamp()
ras_core_get_utc_second_timestamp() retrieves the current UTC timestamp
(in seconds since the Unix epoch) through a platform-specific RAS system
callback and is used for timestamping RAS error events.
The function checks ras_core in the conditional statement before calling
the sys_fn callback. However, when the condition fails, the function
prints an error message using ras_core->dev.
If ras_core is NULL, this can lead to a potential NULL pointer
dereference when accessing ras_core->dev.
Add an early NULL check for ras_core at the beginning of the function
and return 0 when the pointer is not valid. This prevents the
dereference and makes the control flow clearer.
Products Associated with CVE-2026-53315
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Affected Versions
Linux:- Version 13c91b5b4378b5d08dc9ae9121b1645a0beec0bb and below 6c84f7f0afc415691ffa7d48aa7ce1d8e6083032 is affected.
- Version 13c91b5b4378b5d08dc9ae9121b1645a0beec0bb and below 2b8101cc3b34d4d80d799360d2744829d5964479 is affected.
- Version 6.19 is affected.
- Before 6.19 is unaffected.
- Version 7.0.10, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.