CVE-2026-52984

In the Linux kernel, the following vulnerability has been resolved: net/sched: netem: fix queue limit check to include reordered packets The queue limit check in netem_enqueue() uses q->t_len which only counts packets in the internal tfifo. Packets placed in sch->q by the reorder path (__qdisc_enqueue_head) are not counted, allowing the total queue occupancy to exceed sch->limit under reordering. Include sch->q.qlen in the limit check.

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/0f875d52db4c921da610e481b72f03cc82fdcb72	Patch
https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9	Patch
https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d	Patch
https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6	Patch
https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177	Patch
https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3	Patch
https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b	Patch
https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.13:-::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc7::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::

History

No history.

Information

Published : 2026-06-24 17:17

Updated : 2026-07-14 16:47

NVD link : CVE-2026-52984

Mitre link : CVE-2026-52984

CVE.ORG link : CVE-2026-52984

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

{"id": "CVE-2026-52984", "cveTags": [], "metrics": {"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": "216509dda290f6db92c816dd54b83c1df9da9e76", "lessThan": "0f875d52db4c921da610e481b72f03cc82fdcb72", "versionType": "git"}, {"status": "affected", "version": "c2047b0e216c8edce227d7c42f99ac2877dad0e4", "lessThan": "ef9a41b3870fb90577da5b2de5bd140022d4021e", "versionType": "git"}, {"status": "affected", "version": "10df49cfca73dfbbdb6c4150d859f7e8926ae427", "lessThan": "74fcd8e127200a50ee22ba2b45c164722bdb9177", "versionType": "git"}, {"status": "affected", "version": "3824c5fad18eeb7abe0c4fc966f29959552dca3e", "lessThan": "39a66e83ea41fe845631eeb8d326953de27d13f9", "versionType": "git"}, {"status": "affected", "version": "356078a5c55ec8d2061fcc009fb8599f5b0527f9", "lessThan": "54b5dbacd00dedffd5e2eed76de1c3839996b5e6", "versionType": "git"}, {"status": "affected", "version": "f8d4bc455047cf3903cd6f85f49978987dbb3027", "lessThan": "8450462eaf91d5d2a9e863507b16d18e814baef3", "versionType": "git"}, {"status": "affected", "version": "f8d4bc455047cf3903cd6f85f49978987dbb3027", "lessThan": "936a7dd87251f6f3e88983350833edf60fe6a80b", "versionType": "git"}, {"status": "affected", "version": "f8d4bc455047cf3903cd6f85f49978987dbb3027", "lessThan": "4185701fcce6b426b6c3630b25330dddd9c47b0d", "versionType": "git"}, {"status": "affected", "version": "83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31", "versionType": "git"}, {"status": "affected", "version": "5.10.232", "lessThan": "5.10.258", "versionType": "semver"}, {"status": "affected", "version": "5.15.175", "lessThan": "5.15.209", "versionType": "semver"}, {"status": "affected", "version": "6.1.121", "lessThan": "6.1.175", "versionType": "semver"}, {"status": "affected", "version": "6.6.67", "lessThan": "6.6.141", "versionType": "semver"}, {"status": "affected", "version": "6.12.6", "lessThan": "6.12.91", "versionType": "semver"}, {"status": "affected", "version": "5.4.288", "lessThan": "5.5", "versionType": "semver"}], "programFiles": ["net/sched/sch_netem.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"status": "unaffected", "version": "0", "lessThan": "6.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.258", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.209", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.175", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.141", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.91", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.33", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.10", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/sched/sch_netem.c"], "defaultStatus": "affected"}]}], "published": "2026-06-24T17:17:09.127", "references": [{"url": "https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "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\nnet/sched: netem: fix queue limit check to include reordered packets\n\nThe queue limit check in netem_enqueue() uses q->t_len which only\ncounts packets in the internal tfifo. Packets placed in sch->q by\nthe reorder path (__qdisc_enqueue_head) are not counted, allowing\nthe total queue occupancy to exceed sch->limit under reordering.\n\nInclude sch->q.qlen in the limit check."}], "lastModified": "2026-07-14T16:47:58.927", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5308A2F3-E3FE-4709-BF9B-72FFAE51869E", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.288"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6190B727-8357-41BA-95A6-93CE70DD1D13", "versionEndExcluding": "5.10.258", "versionStartIncluding": "5.10.232"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "769F0CE8-F105-43FD-A062-329FCEA77266", "versionEndExcluding": "5.15.209", "versionStartIncluding": "5.15.175"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D9FD6629-C54A-4DF9-A0E7-DF97B1044794", "versionEndExcluding": "6.1.175", "versionStartIncluding": "6.1.121"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B13AB42A-8C88-4137-A76A-A1D0E0747925", "versionEndExcluding": "6.6.141", "versionStartIncluding": "6.6.67"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "40B29B49-CEA5-4344-9EA8-837A2901A254", "versionEndExcluding": "6.12.91", "versionStartIncluding": "6.12.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9522640D-56EC-4110-B5B3-D0BFEF1E88F9", "versionEndExcluding": "6.18.33", "versionStartIncluding": "6.13.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4", "versionEndExcluding": "7.0.10", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A3F9505-6B98-4269-8B81-127E55A1BF00"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE491969-75AE-4A6B-9A58-8FC5AF98798F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "93C0660D-7FB8-4FBA-892A-B064BA71E49E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "034C36A6-C481-41F3-AE9A-D116E5BE6895"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5DFCDFB8-4FD0-465A-9076-D813D78FE51B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}