VulnerabilityPublished 13 Jan 2026Updated 30 Jul 2026

CVE-2025-68782: Linux kernel · scsi: target: Reset t_task_cdb pointer in error case

Source GCVE Database

Authoritative record:CVE-2025-68782· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in 8727663ded659aad55eef21e3864ebf5a4796a96 : patch Linux kernel soon.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

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.
Patch: Available – fixed in 8727663ded659aad55eef21e3864ebf5a4796a96, 5053eab38a4c4543522d0c320c639c56a8b59908, 0260ad551b0815eb788d47f32899fbcd65d6f128 +4

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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.

ghsa-r6v3-89j7-2957

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 9e95fb805dc043cc8ed878a08d1583e4097a5f80, < 8727663ded659aad55eef21e3864ebf5a4796a96	Fixed in 8727663ded659aad55eef21e3864ebf5a4796a96
LinuxLinux	Affected ≥ 9e95fb805dc043cc8ed878a08d1583e4097a5f80, < 5053eab38a4c4543522d0c320c639c56a8b59908	Fixed in 5053eab38a4c4543522d0c320c639c56a8b59908
LinuxLinux	Affected ≥ 9e95fb805dc043cc8ed878a08d1583e4097a5f80, < 0260ad551b0815eb788d47f32899fbcd65d6f128	Fixed in 0260ad551b0815eb788d47f32899fbcd65d6f128
LinuxLinux	Affected ≥ 9e95fb805dc043cc8ed878a08d1583e4097a5f80, < 45fd86b444105c8bd07a763f58635c87e5dc7aea	Fixed in 45fd86b444105c8bd07a763f58635c87e5dc7aea
LinuxLinux	Affected ≥ 9e95fb805dc043cc8ed878a08d1583e4097a5f80, < 8edbb9e371af186b4cf40819dab65fafe109df4d	Fixed in 8edbb9e371af186b4cf40819dab65fafe109df4d
LinuxLinux	Affected ≥ 9e95fb805dc043cc8ed878a08d1583e4097a5f80, < 6cac97b12bdab04832e0416d049efcd0d48d303b	Fixed in 6cac97b12bdab04832e0416d049efcd0d48d303b

Description

A vulnerability in the Linux kernel's SCSI target subsystem involves improper handling of the t_task_cdb pointer when memory allocation fails. Specifically, if allocation of cmd->t_task_cdb fails, the pointer remains NULL but is later dereferenced in the error handling path, which can lead to a denial of service. The issue has been resolved by resetting the NULL pointer to a default fixed-size buffer in error cases.

References

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