CVE-2026-43308

In the Linux kernel, the following vulnerability has been resolved: btrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref() There is no need to BUG(), we can just return an error and log an error message.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f
https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6	Patch
https://git.kernel.org/stable/c/6ad4caadc6343c3d7987bf3211f15d66135c4c42
https://git.kernel.org/stable/c/a5ac87aabdedd31e832b40466605e83f428136aa
https://git.kernel.org/stable/c/c614b64bee2c3cbb0c80dd3a9ee492c74364e275
https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

11 Nov 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: btrfs: no hacer BUG() en un tipo de referencia retrasada inesperado en run_one_delayed_ref() No es necesario hacer BUG(), simplemente podemos devolver un error y registrar un mensaje de error.

30 Oct 2026, 13:18

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/c614b64bee2c3cbb0c80dd3a9ee492c74364e275 -

21 Oct 2026, 13:18

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f - () https://git.kernel.org/stable/c/a5ac87aabdedd31e832b40466605e83f428136aa -

15 Oct 2026, 11:17

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/6ad4caadc6343c3d7987bf3211f15d66135c4c42 -

Information

Published : 2026-05-08 14:16

Updated : 2026-11-11 20:10

NVD link : CVE-2026-43308

Mitre link : CVE-2026-43308

CVE.ORG link : CVE-2026-43308

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-43308", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43308", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T15:34:57.010242Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "lessThan": "c614b64bee2c3cbb0c80dd3a9ee492c74364e275", "versionType": "git"}, {"status": "affected", "version": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "lessThan": "0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f", "versionType": "git"}, {"status": "affected", "version": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "lessThan": "a5ac87aabdedd31e832b40466605e83f428136aa", "versionType": "git"}, {"status": "affected", "version": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "lessThan": "6ad4caadc6343c3d7987bf3211f15d66135c4c42", "versionType": "git"}, {"status": "affected", "version": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "lessThan": "5549743e11c06da23cfa7712a994b9f1e69064c6", "versionType": "git"}, {"status": "affected", "version": "5d4f98a28c7d334091c1b7744f48a1acdd2a4ae0", "lessThan": "c7d1d4ff56744074e005771aff193b927392d51f", "versionType": "git"}], "programFiles": ["fs/btrfs/extent-tree.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.31"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.31", "versionType": "semver"}, {"status": "unaffected", "version": "6.1.191", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.160", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.114", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.57", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "6.19.6", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/extent-tree.c"], "defaultStatus": "affected"}]}], "published": "2026-05-08T14:16:38.137", "references": [{"url": "https://git.kernel.org/stable/c/0e77f1c8ebf5b1f858b5ac613baceb79919d6d3f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6ad4caadc6343c3d7987bf3211f15d66135c4c42", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a5ac87aabdedd31e832b40466605e83f428136aa", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c614b64bee2c3cbb0c80dd3a9ee492c74364e275", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: don't BUG() on unexpected delayed ref type in run_one_delayed_ref()\n\nThere is no need to BUG(), we can just return an error and log an error\nmessage."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbtrfs: no hacer BUG() en un tipo de referencia retrasada inesperado en run_one_delayed_ref()\n\nNo es necesario hacer BUG(), simplemente podemos devolver un error y registrar un mensaje de error."}], "lastModified": "2026-11-11T20:10:00.273", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "57E17887-BDEB-4BEC-B080-7B529B6EB8FC", "versionEndExcluding": "6.19.6", "versionStartIncluding": "2.6.31"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}