Linux Kernel up to 6.12.102/6.18.43/7.1.7 Display drm/amd/display get_ss_info_from_atombios null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.74-

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.12.102/6.18.43/7.1.7 and classified as critical. Affected is the function get_ss_info_from_atombios of the file drm/amd/display of the component Display. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2026-80704. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.102/6.18.43/7.1.7. It has been declared as critical. Affected by this vulnerability is the function get_ss_info_from_atombios of the file drm/amd/display of the component Display. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: use proper context for logging The same as the rest of the code, get_ss_info_from_atombios() uses calc_pll_cs->ctx->logger for logging. But calc_pll_cs->ctx is initialized only later in calc_pll_max_vco_construct(). Therefore, any output using DC_LOG_SYNC() leads to a NULL pointer deference in get_ss_info_from_atombios(). According to Sashiko, the very same problem exists in dce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too. To avoid accessing the NULL context, use clk_src->base.ctx->logger everywhere. That context in base is initialized earlier in dce110_clk_src_construct() and dce112_clk_src_construct(). Before get_ss_info_from_atombios() or Sashiko's get_pix_clk_dividers functions above are actually called. This is done by redefining DC_LOGGER to CTX->logger. Before: dce110_clk_src_construct() did: -> sets clk_src->base.ctx = ctx; -> ss_info_from_atombios_create() -> get_ss_info_from_atombios() <- uses calc_pll_cs->ctx # BOOM -> calc_pll_max_vco_construct() <- sets calc_pll_cs->ctx After: dce110_clk_src_construct() does: -> sets clk_src->base.ctx = ctx; -> ss_info_from_atombios_create() -> get_ss_info_from_atombios() <- uses clk_src->base.ctx (cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-80704 since 08/26/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/28/2026).

Upgrading to version 6.12.103, 6.18.44 or 7.1.8 eliminates this vulnerability. Applying the patch a94e62b7c7018fcfe0251e53fa96af30f12d923a/f556bc844cc4423e5ad41ae41a4c24f1cf75b978/114b42507b6a23d9d24e24e4ef165233332c64d4 is able to eliminate this problem.

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Productinfo

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Name

Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

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 6.12.103/6.18.44/7.1.8
Patch: a94e62b7c7018fcfe0251e53fa96af30f12d923a/f556bc844cc4423e5ad41ae41a4c24f1cf75b978/114b42507b6a23d9d24e24e4ef165233332c64d4

Timelineinfo

08/26/2026 CVE reserved
08/28/2026 +2 days Advisory disclosed
08/28/2026 +0 days VulDB entry created
08/28/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80704 (🔒)
GCVE (CVE): GCVE-0-2026-80704
GCVE (VulDB): GCVE-100-396637

Entryinfo

Created: 08/28/2026 10:59
Changes: 08/28/2026 10:59 (60)
Complete: 🔍
Cache ID: 216::103

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