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vuln-cve/data/2026/31xxx/CVE-2026-31585.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-31585",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-03-09T15:48:24.120Z",
"datePublished": "2026-04-24T14:42:14.266Z",
"dateUpdated": "2026-06-14T17:42:17.844Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-06-14T17:42:17.844Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: vidtv: fix nfeeds state corruption on start_streaming failure\n\nsyzbot reported a memory leak in vidtv_psi_service_desc_init [1].\n\nWhen vidtv_start_streaming() fails inside vidtv_start_feed(), the\nnfeeds counter is left incremented even though no feed was actually\nstarted. This corrupts the driver state: subsequent start_feed calls\nsee nfeeds > 1 and skip starting the mux, while stop_feed calls\neventually try to stop a non-existent stream.\n\nThis state corruption can also lead to memory leaks, since the mux\nand channel resources may be partially allocated during a failed\nstart_streaming but never cleaned up, as the stop path finds\ndvb->streaming == false and returns early.\n\nFix by decrementing nfeeds back when start_streaming fails, keeping\nthe counter in sync with the actual number of active feeds.\n\n[1]\nBUG: memory leak\nunreferenced object 0xffff888145b50820 (size 32):\n comm \"syz.0.17\", pid 6068, jiffies 4294944486\n backtrace (crc 90a0c7d4):\n vidtv_psi_service_desc_init+0x74/0x1b0 drivers/media/test-drivers/vidtv/vidtv_psi.c:288\n vidtv_channel_s302m_init+0xb1/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:83\n vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:524\n vidtv_mux_init+0x516/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:518\n vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline]\n vidtv_start_feed+0x33e/0x4d0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239"
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/media/test-drivers/vidtv/vidtv_bridge.c"
],
"versions": [
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "f8cccb427e65d725fc0ba05e8900b4676eda268e",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "60f768d46df561e06d92ffcacc00909f37a0f23d",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "80900b5424f3454256153ce386388df43b324f63",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "17cb7957c979529cc98ff57f7ac331532f1f7c83",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "98c22210aeadce67d9d20059f0dbbd01ba7fdbba",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "25f19e476ab15defe698504212899fdb9f7cd61b",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "4bf95f797edd63c93330eafb6d6e670982344b9b",
"status": "affected",
"versionType": "git"
},
{
"version": "f90cf6079bf67988f8b1ad1ade70fc89d0080905",
"lessThan": "a0e5a598fe9a4612b852406b51153b881592aede",
"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/media/test-drivers/vidtv/vidtv_bridge.c"
],
"versions": [
{
"version": "5.10",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.10",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.10.258",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.209",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.175",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.136",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.83",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.24",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.19.14",
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.0.1",
"lessThanOrEqual": "7.0.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1",
"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": "5.10",
"versionEndExcluding": "5.10.258"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "5.15.209"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.1.175"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.6.136"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.12.83"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.18.24"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "6.19.14"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "7.0.1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.10",
"versionEndExcluding": "7.1"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/f8cccb427e65d725fc0ba05e8900b4676eda268e"
},
{
"url": "https://git.kernel.org/stable/c/60f768d46df561e06d92ffcacc00909f37a0f23d"
},
{
"url": "https://git.kernel.org/stable/c/80900b5424f3454256153ce386388df43b324f63"
},
{
"url": "https://git.kernel.org/stable/c/17cb7957c979529cc98ff57f7ac331532f1f7c83"
},
{
"url": "https://git.kernel.org/stable/c/98c22210aeadce67d9d20059f0dbbd01ba7fdbba"
},
{
"url": "https://git.kernel.org/stable/c/25f19e476ab15defe698504212899fdb9f7cd61b"
},
{
"url": "https://git.kernel.org/stable/c/83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd"
},
{
"url": "https://git.kernel.org/stable/c/4bf95f797edd63c93330eafb6d6e670982344b9b"
},
{
"url": "https://git.kernel.org/stable/c/a0e5a598fe9a4612b852406b51153b881592aede"
}
],
"title": "media: vidtv: fix nfeeds state corruption on start_streaming failure",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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