Answer in brief
CVE-2026-72326 records a Unknown severity vulnerability in net/sched: cake: reject overhead values that underflow length. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-72326 records a Unknown severity vulnerability in net/sched: cake: reject overhead values that underflow length. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a729b7f0bd5bf4919306556aed614438f5174537 <f511dd7bf6077aa7afbe72914520553fedaacbb4 || >=a729b7f0bd5bf4919306556aed614438f5174537 <e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f || >=a729b7f0bd5bf4919306556aed614438f5174537 <297f459865360b46a887667cbf3aac6a6f013841 || >=a729b7f0bd5bf4919306556aed614438f5174537 <336c1e414fc0e9844d445174e8ada2a7dd8d1c4b || >=a729b7f0bd5bf4919306556aed614438f5174537 <bcdf3a3664f7d2c4e37e155f30f72ef33f041804 || >=a729b7f0bd5bf4919306556aed614438f5174537 <7aa0e64fea778a9e3df73e64da95367ff8ad2ea5 || >=a729b7f0bd5bf4919306556aed614438f5174537 <f1e7807df5bf2d42a40266430e9f82f37633cdcf || >=a729b7f0bd5bf4919306556aed614438f5174537 <b7f97cae7ec1b6c3c32843c42be218690d310467 | f511dd7bf6077aa7afbe72914520553fedaacbb4, e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f, 297f459865360b46a887667cbf3aac6a6f013841, 336c1e414fc0e9844d445174e8ada2a7dd8d1c4b, bcdf3a3664f7d2c4e37e155f30f72ef33f041804, 7aa0e64fea778a9e3df73e64da95367ff8ad2ea5, f1e7807df5bf2d42a40266430e9f82f37633cdcf, b7f97cae7ec1b6c3c32843c42be218690d310467 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: net/sched: cake: reject overhead values that underflow length CAKE accepts signed overhead values and stores them in an s16, but the adjusted packet length calculation uses unsigned arithmetic. A negative effective length can therefore wrap to a large value. Such configurations make rate accounting depend on integer wraparound rather than on the packet size userspace intended to model. A static netlink lower bound is not enough because packets reaching CAKE can be smaller than any reasonable manual-overhead allowance. Fold the signed overhead adjustment into the existing datapath MPU clamp so negative adjusted lengths are clamped before link-layer framing adjustments.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a729b7f0bd5bf4919306556aed614438f5174537 <f511dd7bf6077aa7afbe72914520553fedaacbb4 || >=a729b7f0bd5bf4919306556aed614438f5174537 <e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f || >=a729b7f0bd5bf4919306556aed614438f5174537 <297f459865360b46a887667cbf3aac6a6f013841 || >=a729b7f0bd5bf4919306556aed614438f5174537 <336c1e414fc0e9844d445174e8ada2a7dd8d1c4b || >=a729b7f0bd5bf4919306556aed614438f5174537 <bcdf3a3664f7d2c4e37e155f30f72ef33f041804 || >=a729b7f0bd5bf4919306556aed614438f5174537 <7aa0e64fea778a9e3df73e64da95367ff8ad2ea5 || >=a729b7f0bd5bf4919306556aed614438f5174537 <f1e7807df5bf2d42a40266430e9f82f37633cdcf || >=a729b7f0bd5bf4919306556aed614438f5174537 <b7f97cae7ec1b6c3c32843c42be218690d310467 | f511dd7bf6077aa7afbe72914520553fedaacbb4, e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f, 297f459865360b46a887667cbf3aac6a6f013841, 336c1e414fc0e9844d445174e8ada2a7dd8d1c4b, bcdf3a3664f7d2c4e37e155f30f72ef33f041804, 7aa0e64fea778a9e3df73e64da95367ff8ad2ea5, f1e7807df5bf2d42a40266430e9f82f37633cdcf, b7f97cae7ec1b6c3c32843c42be218690d310467 |
| Linux/Linuxgeneric | 4.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: net/sched: cake: reject overhead values that underflow length CAKE accepts signed overhead values and stores them in an s16, but the adjusted packet length calculation uses unsigned arithmetic. A negative effective length can therefore wrap to a large value. Such configurations make rate accounting depend on integer wraparound rather than on the packet size userspace intended to model. A static netlink lower bound is not enough because packets reaching CAKE can be smaller than any reasonable manual-overhead allowance. Fold the signed overhead adjustment into the existing datapath MPU clamp so negative adjusted lengths are clamped before link-layer framing adjustments.
Quoted source text, attributed separately from HOL analysis.