VulnerabilityPublished 26 Jun 2026Updated 6 Nov 2026

CVE-2026-53315: Linux kernel · drm/amd/ras: Fix NULL deref in ras_core_get_utc_second_timestamp()

Affects Linux kernelSource CVE Database V5

Not known to be exploited : upgrade to 6c84f7f0afc415691ffa7d48aa7ce1d8e6083032 or 2b8101cc3b34d4d80d799360d2744829d5964479 when convenient.

Data as of 6 Nov 2026, 16:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in 6c84f7f0afc415691ffa7d48aa7ce1d8e6083032, 2b8101cc3b34d4d80d799360d2744829d5964479

Exploitation evidence

Disclosed: evidence found.
CVE published 26 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 6c84f7f0afc415691ffa7d48aa7ce1d8e6083032 or 2b8101cc3b34d4d80d799360d2744829d5964479.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 13c91b5b4378b5d08dc9ae9121b1645a0beec0bb, < 6c84f7f0afc415691ffa7d48aa7ce1d8e6083032	Fixed in 6c84f7f0afc415691ffa7d48aa7ce1d8e6083032
LinuxLinux	Affected ≥ 13c91b5b4378b5d08dc9ae9121b1645a0beec0bb, < 2b8101cc3b34d4d80d799360d2744829d5964479	Fixed in 2b8101cc3b34d4d80d799360d2744829d5964479
LinuxLinux	Affected =6.19	Fixed in–

Description

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.

References

Community reviews

Loading reviews…