CVE-2026-89877

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89877", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.772Z", "datePublished": "2026-09-16T10:31:44.194Z", "dateUpdated": "2026-10-30T12:33:22.773Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:33:22.773Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: saa7164: fix cleanup on resource allocation failure\n\nsaa7164_dev_setup() adds the device to the global saa7164_devlist before\nrequesting the PCI BAR memory regions.\n\nIf get_resources() fails, saa7164_dev_setup() decrements the device count\nand returns an error, but leaves the device on saa7164_devlist. The probe\nerror path then frees the device, leaving a dangling entry on the global\nlist.\n\nReuse the existing MMIO mapping error path to remove the device from\nsaa7164_devlist and decrement the device count before returning.\n\nAlso release BAR0 if it was successfully requested but the BAR2 request\nfails."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The bug is reached only from saa7164 PCI probe (saa7164_initdev \u2192 saa7164_dev_setup \u2192 get_resources()) on a locally attached NXP SAA7164/Hauppauge HVR card; PVR, HTPC, and broadcast systems enumerate that function at boot, udev bind, or PCI/Thunderbolt hotplug, which is a local PCI probe path, not a network or USB protocol path.\nAC:L - A 1131:7164 function whose BAR0 or BAR2 cannot be reserved (zero-length BAR, overlap with busy iomem, or BAR2 failing after BAR0 was claimed) makes get_resources() return -EBUSY on every probe, so the dangling saa7164_devlist UAF is deterministic with no race or layout lottery the attacker cannot influence.\nPR:N - saa7164_initdev() performs no capability or authentication checks; when a matching PCI function appears, kernel enumeration and udev module autoload run the failing get_resources() path automatically without an OS account or user-namespace privilege.\nUI:N - Probe is invoked automatically by the PCI core and udev-driven module autoload on device enumeration; no victim must open a V4L/DVB node, load firmware, or otherwise interact.\nS:U - The dangling saa7164_devlist pointer and follow-on use-after-free remain inside the host kernel saa7164 driver and do not cross a VM, IOMMU, or sandbox security boundary.\nC:H - After kfree(dev) the global saa7164_devlist still points at the freed saa7164_dev; debugfs seq_start/seq_show and later probes walk that object, so reclaimed heap contents including kernel pointers can be read back \u2014 a use-after-free read primitive.\nI:H - The next list_add_tail() or list_del() on saa7164_devlist writes next/prev through the freed list node, corrupting whatever slab object reused that allocation and enabling an arbitrary kernel write and control-flow hijack.\nA:H - Walking or mutating the dangling saa7164_devlist entry after kfree causes a kernel oops or panic via poisoned-slab dereference or list corruption, fully denying availability."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/media/pci/saa7164/saa7164-core.c"], "versions": [{"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "ac9d7ca8199c64c320ba8177e3c0f7b0deb7ff06", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "99bf01e2563f8bdfe5f25e489596cff455a35d6b", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "daa5b32cdf7db81a07ee2a91ce092a363e7754aa", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "77f216f8de6221efb6f6c471bc9e598f1879825b", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "69259c627009bf7621010ae9e997dad2dad3339c", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "4d2048466af9e2c960c5be6dcd317e3b657d268b", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "fc65623524b5bf23baddc6ae688d954fba0d5de2", "status": "affected", "versionType": "git"}, {"version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "lessThan": "28e84c6e2e6753ed238ea097b2842a32a6a6879b", "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/pci/saa7164/saa7164-core.c"], "versions": [{"version": "2.6.32", "status": "affected"}, {"version": "0", "lessThan": "2.6.32", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.5", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "2.6.32", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.18.51"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.2.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/ac9d7ca8199c64c320ba8177e3c0f7b0deb7ff06"}, {"url": "https://git.kernel.org/stable/c/99bf01e2563f8bdfe5f25e489596cff455a35d6b"}, {"url": "https://git.kernel.org/stable/c/daa5b32cdf7db81a07ee2a91ce092a363e7754aa"}, {"url": "https://git.kernel.org/stable/c/77f216f8de6221efb6f6c471bc9e598f1879825b"}, {"url": "https://git.kernel.org/stable/c/69259c627009bf7621010ae9e997dad2dad3339c"}, {"url": "https://git.kernel.org/stable/c/4d2048466af9e2c960c5be6dcd317e3b657d268b"}, {"url": "https://git.kernel.org/stable/c/fc65623524b5bf23baddc6ae688d954fba0d5de2"}, {"url": "https://git.kernel.org/stable/c/28e84c6e2e6753ed238ea097b2842a32a6a6879b"}], "title": "media: saa7164: fix cleanup on resource allocation failure", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/media/pci/saa7164/saa7164-core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "ac9d7ca8199c64c320ba8177e3c0f7b0deb7ff06", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "99bf01e2563f8bdfe5f25e489596cff455a35d6b", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "daa5b32cdf7db81a07ee2a91ce092a363e7754aa", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "77f216f8de6221efb6f6c471bc9e598f1879825b", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "69259c627009bf7621010ae9e997dad2dad3339c", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "4d2048466af9e2c960c5be6dcd317e3b657d268b", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "fc65623524b5bf23baddc6ae688d954fba0d5de2", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}, {"lessThan": "28e84c6e2e6753ed238ea097b2842a32a6a6879b", "status": "affected", "version": "443c1228d50518f3c550e1fef490a2c9d9246ce7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/media/pci/saa7164/saa7164-core.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.32"}, {"lessThan": "2.6.32", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.51", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nmedia: saa7164: fix cleanup on resource allocation failure\n\nsaa7164_dev_setup() adds the device to the global saa7164_devlist before\nrequesting the PCI BAR memory regions.\n\nIf get_resources() fails, saa7164_dev_setup() decrements the device count\nand returns an error, but leaves the device on saa7164_devlist. The probe\nerror path then frees the device, leaving a dangling entry on the global\nlist.\n\nReuse the existing MMIO mapping error path to remove the device from\nsaa7164_devlist and decrement the device count before returning.\n\nAlso release BAR0 if it was successfully requested but the BAR2 request\nfails."}], "id": "CVE-2026-89877", "lastModified": "2026-10-30T13:20:34.540", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-16T11:16:55.987", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/28e84c6e2e6753ed238ea097b2842a32a6a6879b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d2048466af9e2c960c5be6dcd317e3b657d268b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/69259c627009bf7621010ae9e997dad2dad3339c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77f216f8de6221efb6f6c471bc9e598f1879825b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/99bf01e2563f8bdfe5f25e489596cff455a35d6b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ac9d7ca8199c64c320ba8177e3c0f7b0deb7ff06"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/daa5b32cdf7db81a07ee2a91ce092a363e7754aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fc65623524b5bf23baddc6ae688d954fba0d5de2"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,daa5b32cdf7db81a07ee2a91ce092a363e7754aa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,77f216f8de6221efb6f6c471bc9e598f1879825b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,69259c627009bf7621010ae9e997dad2dad3339c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,4d2048466af9e2c960c5be6dcd317e3b657d268b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,fc65623524b5bf23baddc6ae688d954fba0d5de2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,28e84c6e2e6753ed238ea097b2842a32a6a6879b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[443c1228d50518f3c550e1fef490a2c9d9246ce7,28e84c6e2e6753ed238ea097b2842a32a6a6879b)"}}], "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": "semver", "value": "2.6.32"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.32)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.188,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.3-rc1,*]"}}], "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": "2026-09-16T19:30:05.622017+00:00", "updated": "2026-09-18T03:15:02.172931+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}