Bug 2301495 (CVE-2024-42130)

Summary: CVE-2024-42130 kernel: nfc/nci: Add the inconsistency check between the input data length and count
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: kernel 5.15.163, kernel 6.1.98, kernel 6.6.39, kernel 6.9.9, kernel 6.10 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel's NFC subsystem, where the write() call allows a mismatch between data length and count values. For example, a call with a data length of 3 bytes but a count of 15 could lead to inconsistencies in processing NFC packets.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2301811    
Bug Blocks:    

Description OSIDB Bzimport 2024-07-30 08:35:29 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nfc/nci: Add the inconsistency check between the input data length and count

write$nci(r0, &(0x7f0000000740)=ANY=[@ANYBLOB="610501"], 0xf)

Syzbot constructed a write() call with a data length of 3 bytes but a count value
of 15, which passed too little data to meet the basic requirements of the function
nci_rf_intf_activated_ntf_packet().

Therefore, increasing the comparison between data length and count value to avoid
problems caused by inconsistent data length and count.
Comment 1 Mauro Matteo Cascella 2024-07-30 19:52:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024073027-CVE-2024-42130-f6ce@gregkh/T
Comment 2 Mauro Matteo Cascella 2024-07-30 19:52:51 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2301811]