185 lines
8.8 KiB
JSON
185 lines
8.8 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-2026-99284",
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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": "2026-09-25T10:25:14.405Z",
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"datePublished": "2026-11-07T20:40:33.661Z",
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"dateUpdated": "2026-11-10T18:15:30.724Z"
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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": "2026-11-10T18:15:30.724Z"
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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\nnet: skbuff: propagate shared-frag marker in skb_zerocopy()\n\nskb_zerocopy() moves frag descriptors from @from into @to and takes a\nreference on each frag, but it does not copy skb_shinfo(from)->flags into\nskb_shinfo(to)->flags. A destination skb holding the same page-cache\nbacked frags as the source therefore reports skb_has_shared_frag() as\nfalse.\n\nThat breaks the invariant relied on by later in-place writers. ESP input\nchecks skb_has_shared_frag() before deciding whether an uncloned\nnonlinear skb can skip skb_cow_data(); with the marker lost, an skb that\nskb_zerocopy() built for nfnetlink_queue or for an openvswitch upcall is\ndecrypted in place, letting an unprivileged user write into the page\ncache of a root-owned read-only file.\n\nPropagate SKBFL_SHARED_FRAG when frag descriptors are copied, as done for\nthe other frag-transfer helpers."
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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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"net/core/skbuff.c"
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],
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"versions": [
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{
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"version": "af2806f8f90a150160be898cd85332459c83c5cb",
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"lessThan": "fe8477e23dd2ee6bce231d65f2586a333b211dc0",
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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": "af2806f8f90a150160be898cd85332459c83c5cb",
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"lessThan": "1c623e3cbf43f12dd4a72712079bfa247a9b8ba3",
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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": "af2806f8f90a150160be898cd85332459c83c5cb",
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"lessThan": "d7d6ff98d5d1b400f02211f962ac32cc0020aeab",
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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": "af2806f8f90a150160be898cd85332459c83c5cb",
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"lessThan": "1a9c180cd8435917b7516edfb1c9148032c28773",
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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": "af2806f8f90a150160be898cd85332459c83c5cb",
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"lessThan": "79dc34beb1fdb3da79753e51e15c68591a2561fe",
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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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"net/core/skbuff.c"
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],
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"versions": [
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{
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"version": "3.14",
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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": "3.14",
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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": "6.12.117",
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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": "6.18.61",
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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": "7.2.15",
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"lessThanOrEqual": "7.2.*",
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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": "7.3.2",
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"lessThanOrEqual": "7.3.*",
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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": "7.4-rc1",
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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": "3.14",
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"versionEndExcluding": "6.12.117"
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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": "3.14",
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"versionEndExcluding": "6.18.61"
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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": "3.14",
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"versionEndExcluding": "7.2.15"
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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": "3.14",
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"versionEndExcluding": "7.3.2"
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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": "3.14",
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"versionEndExcluding": "7.4-rc1"
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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/fe8477e23dd2ee6bce231d65f2586a333b211dc0"
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},
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{
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"url": "https://git.kernel.org/stable/c/1c623e3cbf43f12dd4a72712079bfa247a9b8ba3"
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},
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{
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"url": "https://git.kernel.org/stable/c/d7d6ff98d5d1b400f02211f962ac32cc0020aeab"
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},
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{
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"url": "https://git.kernel.org/stable/c/1a9c180cd8435917b7516edfb1c9148032c28773"
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},
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{
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"url": "https://git.kernel.org/stable/c/79dc34beb1fdb3da79753e51e15c68591a2561fe"
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}
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],
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"title": "net: skbuff: propagate shared-frag marker in skb_zerocopy()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |