Linux Kernel up to 7.2-rc2 cake net/sched/sch_cake.c integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$5k-$25k0.00+

Summaryinfo

A vulnerability labeled as very critical has been found in Linux Kernel up to 7.2-rc2. This vulnerability affects unknown code of the file net/sched/sch_cake.c of the component cake. Such manipulation leads to integer overflow. This vulnerability is uniquely identified as CVE-2026-72326. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2-rc2. It has been rated as very critical. Affected by this issue is an unknown part of the file net/sched/sch_cake.c of the component cake. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-72326 since 08/09/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/15/2026).

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5 or 7.2-rc3 eliminates this vulnerability. Applying the patch f511dd7bf6077aa7afbe72914520553fedaacbb4/e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f/297f459865360b46a887667cbf3aac6a6f013841/336c1e414fc0e9844d445174e8ada2a7dd8d1c4b/bcdf3a3664f7d2c4e37e155f30f72ef33f041804/7aa0e64fea778a9e3df73e64da95367ff8ad2ea5/f1e7807df5bf2d42a40266430e9f82f37633cdcf/b7f97cae7ec1b6c3c32843c42be218690d310467 is able to eliminate this problem.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.97/6.18.40/7.1.5/7.2-rc3
Patch: f511dd7bf6077aa7afbe72914520553fedaacbb4/e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f/297f459865360b46a887667cbf3aac6a6f013841/336c1e414fc0e9844d445174e8ada2a7dd8d1c4b/bcdf3a3664f7d2c4e37e155f30f72ef33f041804/7aa0e64fea778a9e3df73e64da95367ff8ad2ea5/f1e7807df5bf2d42a40266430e9f82f37633cdcf/b7f97cae7ec1b6c3c32843c42be218690d310467

Timelineinfo

08/09/2026 CVE reserved
08/15/2026 +6 days Advisory disclosed
08/15/2026 +0 days VulDB entry created
08/15/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-72326 (🔒)
GCVE (CVE): GCVE-0-2026-72326
GCVE (VulDB): GCVE-100-390932

Entryinfo

Created: 08/15/2026 16:24
Changes: 08/15/2026 16:24 (59)
Complete: 🔍
Cache ID: 216::103

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