{"id":"CVE-2026-80704","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80704","generatedAt":"2026-10-28T03:25:43.903Z","title":"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.","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)","published":"2026-08-28T08:16:56.000Z","lastModified":"2026-10-21T13:19:59.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.0016,"percentile":0.0517,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/02647d98340738f918690ed227fdcf154db1b84a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/07b52a41765722ec971e0cd9739b140bf4933998","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/114b42507b6a23d9d24e24e4ef165233332c64d4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a94e62b7c7018fcfe0251e53fa96af30f12d923a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f556bc844cc4423e5ad41ae41a4c24f1cf75b978","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80704","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}