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