Linux Kernel up to 7.3-rc4 samsung-dsim samsung-dsim.c samsung_dsim_register_te_irq denial of service

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CTI Interest Score
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4.2$0-$5k1.37

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 6.6.157/6.12.111/6.18.54/7.2.8/7.3-rc4. This issue affects the function samsung_dsim_register_te_irq of the file samsung-dsim.c of the component samsung-dsim. The manipulation leads to denial of service. This vulnerability is referenced as CVE-2026-98605. The attack can only be performed from a local environment. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.6.157/6.12.111/6.18.54/7.2.8/7.3-rc4 and classified as problematic. This issue affects the function samsung_dsim_register_te_irq of the file samsung-dsim.c of the component samsung-dsim. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: samsung-dsim: fix TE GPIO lifetime for host attach When the Exynos DSI driver was generalized into samsung-dsim, the TE GPIO acquisition was switched from gpiod_get_optional() to devm_gpiod_get_optional() while keeping the matching gpiod_put() calls. That combination is wrong for a managed descriptor. However, dropping the puts and keeping the managed get is also wrong: samsung_dsim_register_te_irq() runs from the DSI host attach callback, and host detach/reattach can happen without destroying the device that owns the managed action. A second attach would then request the GPIO again without having released it. Switch back to a non-managed gpiod_get_optional() and keep the explicit gpiod_put() on the request_irq() error path and in samsung_dsim_unregister_te_irq(). [Luca: remove unnecessary comment]

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-98605 since 09/25/2026. The exploitation is known to be easy. Attacking locally is a requirement. The exploitation requires an enhanced level of successful authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.6.158, 6.12.112, 6.18.55, 7.2.9 or 7.3-rc5 eliminates this vulnerability. Applying the patch 77a43e00c57486a5212ef22d4665cafad62a5d4b/5759bbef951c39d264ac0f47daa4137d01403aea/ebffd70e4877bb7554974cf975a27872f2bb225f/9b796251c3cca45a33a5c859c6818c58aa982277/ada667890773e033d2f40dc94176e3beb930b516 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.158/6.12.112/6.18.55/7.2.9/7.3-rc5
Patch: 77a43e00c57486a5212ef22d4665cafad62a5d4b/5759bbef951c39d264ac0f47daa4137d01403aea/ebffd70e4877bb7554974cf975a27872f2bb225f/9b796251c3cca45a33a5c859c6818c58aa982277/ada667890773e033d2f40dc94176e3beb930b516

Timelineinfo

09/25/2026 CVE reserved
10/18/2026 +23 days Advisory disclosed
10/18/2026 +0 days VulDB entry created
10/18/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-98605 (🔒)
GCVE (CVE): GCVE-0-2026-98605
GCVE (VulDB): GCVE-100-422195

Entryinfo

Created: 10/18/2026 20:57
Changes: 10/18/2026 20:57 (60)
Complete: 🔍
Cache ID: 216::103

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