164 lines
8.2 KiB
JSON
164 lines
8.2 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-2026-53234",
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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": "2026-06-09T07:44:35.393Z",
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"datePublished": "2026-06-25T08:39:31.852Z",
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"dateUpdated": "2026-06-25T08:39:31.852Z"
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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": "2026-06-25T08:39:31.852Z"
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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: ibm: emac: Fix use-after-free during device removal\n\nThe driver was using devm_register_netdev() which causes unregister_netdev()\nto be deferred until the devres cleanup phase, which runs after emac_remove()\nreturns. This creates a use-after-free window where:\n\n1. emac_remove() is called, which tears down hardware (cancels work, detaches\n modules, unregisters from MAL)\n2. emac_remove() returns\n3. devres cleanup runs and finally calls unregister_netdev()\n\nDuring step 3, the network stack might still process packets, triggering\nemac_irq(), emac_poll(), or other handlers that access now-freed hardware\nresources (dev->emacp, dev->mal, etc.).\n\nFix this by replacing devm_register_netdev() with manual register_netdev()\nand calling unregister_netdev() at the beginning of emac_remove(), before\nany hardware teardown. This ensures the network device is fully stopped and\nunregistered before hardware resources are released.\n\nThe change is safe because:\n- dev->ndev is assigned very early in probe (before any error paths that\n could bypass emac_remove)\n- platform_set_drvdata() is only called after successful registration, so\n emac_remove() only runs for fully registered devices\n- unregister_netdev() is idempotent and safe to call on any registered device"
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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/net/ethernet/ibm/emac/core.c"
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],
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"versions": [
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{
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"version": "a4dd8535a527061a01f2fd335596fa77ca240a96",
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"lessThan": "cf8e14db93eaecc4c0c58299be3b3183b0e53ed5",
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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": "a4dd8535a527061a01f2fd335596fa77ca240a96",
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"lessThan": "c09c2e236eef6f59e105f38a30f5439e6ccbcad7",
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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": "a4dd8535a527061a01f2fd335596fa77ca240a96",
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"lessThan": "c12584cd6078085d707266be864e7e1cc91d74e3",
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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": "a4dd8535a527061a01f2fd335596fa77ca240a96",
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"lessThan": "a0130d682222ae21afc395aead7cd2d87e1a8358",
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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/net/ethernet/ibm/emac/core.c"
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],
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"versions": [
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{
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"version": "6.12",
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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": "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": "6.12.94",
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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": "6.18.36",
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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": "7.0.13",
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"lessThanOrEqual": "7.0.*",
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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",
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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": "6.12",
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"versionEndExcluding": "6.12.94"
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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": "6.12",
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"versionEndExcluding": "6.18.36"
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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": "6.12",
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"versionEndExcluding": "7.0.13"
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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": "6.12",
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"versionEndExcluding": "7.1"
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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/cf8e14db93eaecc4c0c58299be3b3183b0e53ed5"
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},
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{
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"url": "https://git.kernel.org/stable/c/c09c2e236eef6f59e105f38a30f5439e6ccbcad7"
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},
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{
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"url": "https://git.kernel.org/stable/c/c12584cd6078085d707266be864e7e1cc91d74e3"
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},
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{
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"url": "https://git.kernel.org/stable/c/a0130d682222ae21afc395aead7cd2d87e1a8358"
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}
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],
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"title": "net: ibm: emac: Fix use-after-free during device removal",
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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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} |