{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23156", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.978Z", "datePublished": "2026-02-14T16:01:23.215Z", "dateUpdated": "2026-02-14T16:01:23.215Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-14T16:01:23.215Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: fix error propagation in efivar_entry_get()\n\nefivar_entry_get() always returns success even if the underlying\n__efivar_entry_get() fails, masking errors.\n\nThis may result in uninitialized heap memory being copied to userspace\nin the efivarfs_file_read() path.\n\nFix it by returning the error from __efivar_entry_get()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/efivarfs/vars.c"], "versions": [{"version": "2d82e6227ea189c0589e7383a36616ac2a2d248c", "lessThan": "3960f1754664661a970dc9ebbab44ff93a0b4c42", "status": "affected", "versionType": "git"}, {"version": "2d82e6227ea189c0589e7383a36616ac2a2d248c", "lessThan": "510a16f1c5c1690b33504052bc13fbc2772c23f8", "status": "affected", "versionType": "git"}, {"version": "2d82e6227ea189c0589e7383a36616ac2a2d248c", "lessThan": "89b8ca709eeeabcc11ebba64806677873a2787a8", "status": "affected", "versionType": "git"}, {"version": "2d82e6227ea189c0589e7383a36616ac2a2d248c", "lessThan": "e4e15a0a4403c96d9898d8398f0640421df9cb16", "status": "affected", "versionType": "git"}, {"version": "2d82e6227ea189c0589e7383a36616ac2a2d248c", "lessThan": "4b22ec1685ce1fc0d862dcda3225d852fb107995", "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/efivarfs/vars.c"], "versions": [{"version": "6.0", "status": "affected"}, {"version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.162", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.123", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.69", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.9", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "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": "6.0", "versionEndExcluding": "6.1.162"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.123"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.69"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.18.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42"}, {"url": "https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8"}, {"url": "https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8"}, {"url": "https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16"}, {"url": "https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995"}], "title": "efivarfs: fix error propagation in efivar_entry_get()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: fix error propagation in efivar_entry_get()\n\nefivar_entry_get() always returns success even if the underlying\n__efivar_entry_get() fails, masking errors.\n\nThis may result in uninitialized heap memory being copied to userspace\nin the efivarfs_file_read() path.\n\nFix it by returning the error from __efivar_entry_get()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nefivarfs: correcci\u00f3n de la propagaci\u00f3n de errores en efivar_entry_get()\n\nefivar_entry_get() siempre devuelve \u00e9xito incluso si la funci\u00f3n subyacente __efivar_entry_get() falla, enmascarando errores.\n\nEsto puede resultar en que memoria de pila no inicializada sea copiada al espacio de usuario en la ruta de efivarfs_file_read().\n\nSe soluciona devolviendo el error desde __efivar_entry_get()."}], "id": "CVE-2026-23156", "lastModified": "2026-02-18T17:52:44.520", "metrics": {}, "published": "2026-02-14T16:15:55.760", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3960f1754664661a970dc9ebbab44ff93a0b4c42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4b22ec1685ce1fc0d862dcda3225d852fb107995"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/510a16f1c5c1690b33504052bc13fbc2772c23f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/89b8ca709eeeabcc11ebba64806677873a2787a8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e4e15a0a4403c96d9898d8398f0640421df9cb16"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: efivarfs: fix error propagation in efivar_entry_get()", "id": "2439951", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2439951"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nefivarfs: fix error propagation in efivar_entry_get()\nefivar_entry_get() always returns success even if the underlying\n__efivar_entry_get() fails, masking errors.\nThis may result in uninitialized heap memory being copied to userspace\nin the efivarfs_file_read() path.\nFix it by returning the error from __efivar_entry_get()."], "name": "CVE-2026-23156", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-02-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23156\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23156\nhttps://lore.kernel.org/linux-cve-announce/2026021416-CVE-2026-23156-b2f4@gregkh/T"], "threat_severity": "Important"}