CVE-2026-80704

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80704", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.786Z", "datePublished": "2026-08-28T06:53:06.442Z", "dateUpdated": "2026-10-21T12:46:58.375Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:46:58.375Z"}, "descriptions": [{"lang": "en", "value": "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)"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c"], "versions": [{"version": "1296423bf23c7a58133970e223b1f47ec6570308", "lessThan": "07b52a41765722ec971e0cd9739b140bf4933998", "status": "affected", "versionType": "git"}, {"version": "1296423bf23c7a58133970e223b1f47ec6570308", "lessThan": "a94e62b7c7018fcfe0251e53fa96af30f12d923a", "status": "affected", "versionType": "git"}, {"version": "1296423bf23c7a58133970e223b1f47ec6570308", "lessThan": "02647d98340738f918690ed227fdcf154db1b84a", "status": "affected", "versionType": "git"}, {"version": "1296423bf23c7a58133970e223b1f47ec6570308", "lessThan": "f556bc844cc4423e5ad41ae41a4c24f1cf75b978", "status": "affected", "versionType": "git"}, {"version": "1296423bf23c7a58133970e223b1f47ec6570308", "lessThan": "114b42507b6a23d9d24e24e4ef165233332c64d4", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c"], "versions": [{"version": "4.17", "status": "affected"}, {"version": "0", "lessThan": "4.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.17", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/07b52a41765722ec971e0cd9739b140bf4933998"}, {"url": "https://git.kernel.org/stable/c/a94e62b7c7018fcfe0251e53fa96af30f12d923a"}, {"url": "https://git.kernel.org/stable/c/02647d98340738f918690ed227fdcf154db1b84a"}, {"url": "https://git.kernel.org/stable/c/f556bc844cc4423e5ad41ae41a4c24f1cf75b978"}, {"url": "https://git.kernel.org/stable/c/114b42507b6a23d9d24e24e4ef165233332c64d4"}], "title": "drm/amd/display: use proper context for logging", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "07b52a41765722ec971e0cd9739b140bf4933998", "status": "affected", "version": "1296423bf23c7a58133970e223b1f47ec6570308", "versionType": "git"}, {"lessThan": "a94e62b7c7018fcfe0251e53fa96af30f12d923a", "status": "affected", "version": "1296423bf23c7a58133970e223b1f47ec6570308", "versionType": "git"}, {"lessThan": "02647d98340738f918690ed227fdcf154db1b84a", "status": "affected", "version": "1296423bf23c7a58133970e223b1f47ec6570308", "versionType": "git"}, {"lessThan": "f556bc844cc4423e5ad41ae41a4c24f1cf75b978", "status": "affected", "version": "1296423bf23c7a58133970e223b1f47ec6570308", "versionType": "git"}, {"lessThan": "114b42507b6a23d9d24e24e4ef165233332c64d4", "status": "affected", "version": "1296423bf23c7a58133970e223b1f47ec6570308", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.17"}, {"lessThan": "4.17", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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)"}], "id": "CVE-2026-80704", "lastModified": "2026-10-21T13:19:58.980", "metrics": {}, "published": "2026-08-28T08:16:55.953", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: drm/amd/display: use proper context for logging", "id": "2525476", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2525476"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amd/display: use proper context for logging\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().\nAccording to Sashiko, the very same problem exists in\ndce112_get_pix_clk_dividers() and dcn3_get_pix_clk_dividers() too.\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.\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\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(cherry picked from commit 6f16fcbb0c46a87e3d9685407e906573d60104b0)", "A flaw was found in the Linux kernel's `drm/amd/display` component. This vulnerability arises from the improper use of an uninitialized logging context, which can lead to a NULL pointer dereference. A local attacker could potentially trigger this flaw, causing the system to crash and resulting in a Denial of Service (DoS)."], "name": "CVE-2026-80704", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-80704\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-80704\nhttps://lore.kernel.org/linux-cve-announce/2026082807-CVE-2026-80704-04d4@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1296423bf23c7a58133970e223b1f47ec6570308,a94e62b7c7018fcfe0251e53fa96af30f12d923a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1296423bf23c7a58133970e223b1f47ec6570308,02647d98340738f918690ed227fdcf154db1b84a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1296423bf23c7a58133970e223b1f47ec6570308,f556bc844cc4423e5ad41ae41a4c24f1cf75b978)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1296423bf23c7a58133970e223b1f47ec6570308,114b42507b6a23d9d24e24e4ef165233332c64d4)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.8,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-28T11:00:11.890089+00:00", "updated": "2026-09-01T15:15:12.362383+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}