net/sched: netem: fix queue limit check to include reordered packets
Summary
| CVE | CVE-2026-52984 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-24 17:17:09 UTC |
| Updated | 2026-06-24 17:17:09 UTC |
| Description | 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. |
Risk And Classification
EPSS: 0.001840000 probability, percentile 0.081880000 (date 2026-06-29)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 216509dda290f6db92c816dd54b83c1df9da9e76 0f875d52db4c921da610e481b72f03cc82fdcb72 git | Not specified |
| CNA | Linux | Linux | affected c2047b0e216c8edce227d7c42f99ac2877dad0e4 ef9a41b3870fb90577da5b2de5bd140022d4021e git | Not specified |
| CNA | Linux | Linux | affected 10df49cfca73dfbbdb6c4150d859f7e8926ae427 74fcd8e127200a50ee22ba2b45c164722bdb9177 git | Not specified |
| CNA | Linux | Linux | affected 3824c5fad18eeb7abe0c4fc966f29959552dca3e 39a66e83ea41fe845631eeb8d326953de27d13f9 git | Not specified |
| CNA | Linux | Linux | affected 356078a5c55ec8d2061fcc009fb8599f5b0527f9 54b5dbacd00dedffd5e2eed76de1c3839996b5e6 git | Not specified |
| CNA | Linux | Linux | affected f8d4bc455047cf3903cd6f85f49978987dbb3027 8450462eaf91d5d2a9e863507b16d18e814baef3 git | Not specified |
| CNA | Linux | Linux | affected f8d4bc455047cf3903cd6f85f49978987dbb3027 936a7dd87251f6f3e88983350833edf60fe6a80b git | Not specified |
| CNA | Linux | Linux | affected f8d4bc455047cf3903cd6f85f49978987dbb3027 4185701fcce6b426b6c3630b25330dddd9c47b0d git | Not specified |
| CNA | Linux | Linux | affected 83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31 git | Not specified |
| CNA | Linux | Linux | affected 5.10.232 5.10.258 semver | Not specified |
| CNA | Linux | Linux | affected 5.15.175 5.15.209 semver | Not specified |
| CNA | Linux | Linux | affected 6.1.121 6.1.175 semver | Not specified |
| CNA | Linux | Linux | affected 6.6.67 6.6.141 semver | Not specified |
| CNA | Linux | Linux | affected 6.12.6 6.12.91 semver | Not specified |
| CNA | Linux | Linux | affected 5.4.288 5.5 semver | Not specified |
| CNA | Linux | Linux | affected 6.13 | Not specified |
| CNA | Linux | Linux | unaffected 6.13 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.258 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.209 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.175 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.141 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.91 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.33 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0.10 7.0.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.