{"cve":"CVE-2026-80704","nvd":{"published":"2026-08-28T08:16:55.953","modified":"2026-10-21T13:19:58.980","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: use proper context for logging\n\nThe same as the rest of the code, get_ss_info_from_atombios() uses\ncalc_pll_cs->ctx->logger for logging. But calc_pll_cs->ctx is\ninitialized only later in calc_pll_max_vco_construct(). Therefore, any\noutput using DC_LOG_SYNC() leads to a NULL pointer deference in\nget_ss_info_from_atombios().\n\nAccording to Sashiko, the very same problem exists in\ndce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too.\n\nTo avoid accessing the NULL context, use clk_src->base.ctx->logger\neverywhere. That context in base is initialized earlier in\ndce110_clk_src_construct() and dce112_clk_src_construct(). Before\nget_ss_info_from_atombios() or Sashiko's get_pix_clk_dividers functions\nabove are actually called. This is done by redefining DC_LOGGER to\nCTX->logger.\n\nBefore:\ndce110_clk_src_construct() did:\n -> sets clk_src->base.ctx = ctx;\n -> ss_info_from_atombios_create()\n   -> get_ss_info_from_atombios()   <- uses calc_pll_cs->ctx  # BOOM\n -> calc_pll_max_vco_construct()    <- sets calc_pll_cs->ctx\n\nAfter:\ndce110_clk_src_construct() does:\n -> sets clk_src->base.ctx = ctx;\n -> ss_info_from_atombios_create()\n   -> get_ss_info_from_atombios()   <- uses clk_src->base.ctx\n\n(cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/02647d98340738f918690ed227fdcf154db1b84a","https://git.kernel.org/stable/c/07b52a41765722ec971e0cd9739b140bf4933998","https://git.kernel.org/stable/c/114b42507b6a23d9d24e24e4ef165233332c64d4","https://git.kernel.org/stable/c/a94e62b7c7018fcfe0251e53fa96af30f12d923a","https://git.kernel.org/stable/c/f556bc844cc4423e5ad41ae41a4c24f1cf75b978"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-80704","score":0.0016,"percentile":0.05168,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}