{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80892", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.800Z", "datePublished": "2026-09-04T17:11:08.391Z", "dateUpdated": "2026-09-04T17:11:08.391Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-04T17:11:08.391Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: cap LZMA stream pool size\n\nfs/erofs/decompressor_lzma.c sizes the module-global MicroLZMA stream\npool from num_possible_cpus() when the lzma_streams module parameter is\nunset, then z_erofs_load_lzma_config() preallocates one image-supplied\ndictionary per stream, accepting dictionaries up to 8 MiB. On high-CPU\nsystems, a small EROFS image can pin hundreds of MiB of vmalloc-backed\ndecoder state until the erofs module is unloaded.\n\nImpact: An EROFS image mounted by the system can pin up to 8 MiB of\nvmalloc memory per LZMA stream, either as intended or unexpectedly.\n\nBound the default stream count by a new\nCONFIG_EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS option, default 16, so the\nworst-case default preallocation is 128 MiB if the number of CPUs is no\nless than 16 while preserving the existing per-image dictionary limit.\nAn explicit lzma_streams module parameter is still honoured as-is, so\nadministrators who deliberately size the pool are not affected."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/erofs/Kconfig", "fs/erofs/decompressor_lzma.c"], "versions": [{"version": "622ceaddb7649ca328832f50ba1400af778d75fa", "lessThan": "682cb3ece37fc5141e73bc726ccf4adb833e5189", "status": "affected", "versionType": "git"}, {"version": "622ceaddb7649ca328832f50ba1400af778d75fa", "lessThan": "e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4", "status": "affected", "versionType": "git"}, {"version": "622ceaddb7649ca328832f50ba1400af778d75fa", "lessThan": "0c676903cb2a61992ded8e7907609cc6b0f11744", "status": "affected", "versionType": "git"}, {"version": "622ceaddb7649ca328832f50ba1400af778d75fa", "lessThan": "5aaa06dfc10f8398c8807453dbec738ea9af10e4", "status": "affected", "versionType": "git"}, {"version": "622ceaddb7649ca328832f50ba1400af778d75fa", "lessThan": "e52da169b8c0d19bb2d803f2a07fe0e5a00462d6", "status": "affected", "versionType": "git"}, {"version": "622ceaddb7649ca328832f50ba1400af778d75fa", "lessThan": "c9b47e6b23114e939b17f818471c7a46e59006e7", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/erofs/Kconfig", "fs/erofs/decompressor_lzma.c"], "versions": [{"version": "5.16", "status": "affected"}, {"version": "0", "lessThan": "5.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.184", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.16", "versionEndExcluding": "6.1.184"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.6.151"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.12.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.18.44"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/682cb3ece37fc5141e73bc726ccf4adb833e5189"}, {"url": "https://git.kernel.org/stable/c/e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4"}, {"url": "https://git.kernel.org/stable/c/0c676903cb2a61992ded8e7907609cc6b0f11744"}, {"url": "https://git.kernel.org/stable/c/5aaa06dfc10f8398c8807453dbec738ea9af10e4"}, {"url": "https://git.kernel.org/stable/c/e52da169b8c0d19bb2d803f2a07fe0e5a00462d6"}, {"url": "https://git.kernel.org/stable/c/c9b47e6b23114e939b17f818471c7a46e59006e7"}], "title": "erofs: cap LZMA stream pool size", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/erofs/Kconfig", "fs/erofs/decompressor_lzma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "682cb3ece37fc5141e73bc726ccf4adb833e5189", "status": "affected", "version": "622ceaddb7649ca328832f50ba1400af778d75fa", "versionType": "git"}, {"lessThan": "e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4", "status": "affected", "version": "622ceaddb7649ca328832f50ba1400af778d75fa", "versionType": "git"}, {"lessThan": "0c676903cb2a61992ded8e7907609cc6b0f11744", "status": "affected", "version": "622ceaddb7649ca328832f50ba1400af778d75fa", "versionType": "git"}, {"lessThan": "5aaa06dfc10f8398c8807453dbec738ea9af10e4", "status": "affected", "version": "622ceaddb7649ca328832f50ba1400af778d75fa", "versionType": "git"}, {"lessThan": "e52da169b8c0d19bb2d803f2a07fe0e5a00462d6", "status": "affected", "version": "622ceaddb7649ca328832f50ba1400af778d75fa", "versionType": "git"}, {"lessThan": "c9b47e6b23114e939b17f818471c7a46e59006e7", "status": "affected", "version": "622ceaddb7649ca328832f50ba1400af778d75fa", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/erofs/Kconfig", "fs/erofs/decompressor_lzma.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.16"}, {"lessThan": "5.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.184", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nerofs: cap LZMA stream pool size\n\nfs/erofs/decompressor_lzma.c sizes the module-global MicroLZMA stream\npool from num_possible_cpus() when the lzma_streams module parameter is\nunset, then z_erofs_load_lzma_config() preallocates one image-supplied\ndictionary per stream, accepting dictionaries up to 8 MiB. On high-CPU\nsystems, a small EROFS image can pin hundreds of MiB of vmalloc-backed\ndecoder state until the erofs module is unloaded.\n\nImpact: An EROFS image mounted by the system can pin up to 8 MiB of\nvmalloc memory per LZMA stream, either as intended or unexpectedly.\n\nBound the default stream count by a new\nCONFIG_EROFS_FS_ZIP_LZMA_DEFAULT_MAX_STREAMS option, default 16, so the\nworst-case default preallocation is 128 MiB if the number of CPUs is no\nless than 16 while preserving the existing per-image dictionary limit.\nAn explicit lzma_streams module parameter is still honoured as-is, so\nadministrators who deliberately size the pool are not affected."}], "id": "CVE-2026-80892", "lastModified": "2026-09-04T18:17:57.337", "metrics": {}, "published": "2026-09-04T18:17:57.337", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c676903cb2a61992ded8e7907609cc6b0f11744"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5aaa06dfc10f8398c8807453dbec738ea9af10e4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/682cb3ece37fc5141e73bc726ccf4adb833e5189"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c9b47e6b23114e939b17f818471c7a46e59006e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e52da169b8c0d19bb2d803f2a07fe0e5a00462d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[622ceaddb7649ca328832f50ba1400af778d75fa,682cb3ece37fc5141e73bc726ccf4adb833e5189)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[622ceaddb7649ca328832f50ba1400af778d75fa,e8b3d09aa8889dda9be9cbb3d2f0218c4b9acde4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[622ceaddb7649ca328832f50ba1400af778d75fa,0c676903cb2a61992ded8e7609cc6b0f11744)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[622ceaddb7649ca328832f50ba1400af778d75fa,5aaa06dfc10f8398c8807453dbec738ea9af10e4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[622ceaddb7649ca328832f50ba1400af778d75fa,e52da169b8c0d19bb2d803f2a07fe0e5a00462d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[622ceaddb7649ca328832f50ba1400af778d75fa,c9b47e6b23114e939b17f818471c7a46e59006e7)"}}], "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": "generic", "value": "5.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.184,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.151,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.8,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-09-04T19:45:03.491304+00:00", "title": "Memory Exhaustion from Large LZMA Stream Pool in EROFS", "updated": "2026-09-04T22:15:06.459365+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-229"]}