CVE-2025-39777 (GCVE-0-2025-39777)
Vulnerability from cvelistv5
Published
2025-09-11 16:56
Modified
2025-09-11 16:56
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
crypto: acomp - Fix CFI failure due to type punning
To avoid a crash when control flow integrity is enabled, make the
workspace ("stream") free function use a consistent type, and call it
through a function pointer that has that same type.
References
Impacted products
{ "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "product": "Linux", "programFiles": [ "crypto/deflate.c", "crypto/zstd.c", "include/crypto/internal/acompress.h" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "lessThan": "7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf", "status": "affected", "version": "42d9f6c774790d290c175e8775ce9f1366438098", "versionType": "git" }, { "lessThan": "962ddc5a7a4b04c007bba0f3e7298cda13c62efd", "status": "affected", "version": "42d9f6c774790d290c175e8775ce9f1366438098", "versionType": "git" } ] }, { "defaultStatus": "affected", "product": "Linux", "programFiles": [ "crypto/deflate.c", "crypto/zstd.c", "include/crypto/internal/acompress.h" ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [ { "status": "affected", "version": "6.16" }, { "lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver" }, { "lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.4", "versionType": "semver" }, { "lessThanOrEqual": "*", "status": "unaffected", "version": "6.17-rc1", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.16.4", "versionStartIncluding": "6.16", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.17-rc1", "versionStartIncluding": "6.16", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: acomp - Fix CFI failure due to type punning\n\nTo avoid a crash when control flow integrity is enabled, make the\nworkspace (\"stream\") free function use a consistent type, and call it\nthrough a function pointer that has that same type." } ], "providerMetadata": { "dateUpdated": "2025-09-11T16:56:29.638Z", "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux" }, "references": [ { "url": "https://git.kernel.org/stable/c/7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf" }, { "url": "https://git.kernel.org/stable/c/962ddc5a7a4b04c007bba0f3e7298cda13c62efd" } ], "title": "crypto: acomp - Fix CFI failure due to type punning", "x_generator": { "engine": "bippy-1.2.0" } } }, "cveMetadata": { "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "assignerShortName": "Linux", "cveId": "CVE-2025-39777", "datePublished": "2025-09-11T16:56:29.638Z", "dateReserved": "2025-04-16T07:20:57.129Z", "dateUpdated": "2025-09-11T16:56:29.638Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2025-39777\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-11T17:15:43.610\",\"lastModified\":\"2025-09-15T15:22:38.297\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncrypto: acomp - Fix CFI failure due to type punning\\n\\nTo avoid a crash when control flow integrity is enabled, make the\\nworkspace (\\\"stream\\\") free function use a consistent type, and call it\\nthrough a function pointer that has that same type.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/7ec68c59461ca846aab9b7c2b39f63ac7c8a43cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/962ddc5a7a4b04c007bba0f3e7298cda13c62efd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}" } }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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