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  4. CVE 2024 49948 net add more sanity checks to qdiscpktleninit
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2024-49948

net: add more sanity checks to qdisc_pkt_len_init()CVE-2024-49948

Answer in brief

CVE-2024-49948 records a Unknown severity vulnerability in net: add more sanity checks to qdisc_pkt_len_init(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 21, 2024Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
9 mapped packages or products
Fix availability
Available

Why this deserves its current priority

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.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=1def9238d4aa2146924994aa4b7dc861f03b9362 <d7d1a28f5dd57b4d83def876f8d7b4403bd37df9 || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <473426a1d53a68dd1e718e6cd00d57936993fa6c || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <566a931a1436d0e0ad13708ea55479b95426213c || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <2415f465730e48b6e38da1c7c097317bf5dd2d20 || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4 || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <9b0ee571d20a238a22722126abdfde61f1b2bdd0 || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2 || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <1eebe602a8d8264a12e35e39d0645fa88dbbacdd || >=1def9238d4aa2146924994aa4b7dc861f03b9362 <ab9a9a9e9647392a19e7a885b08000e89c86b535d7d1a28f5dd57b4d83def876f8d7b4403bd37df9, 473426a1d53a68dd1e718e6cd00d57936993fa6c, 566a931a1436d0e0ad13708ea55479b95426213c, 2415f465730e48b6e38da1c7c097317bf5dd2d20, 27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4, 9b0ee571d20a238a22722126abdfde61f1b2bdd0, ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2, 1eebe602a8d8264a12e35e39d0645fa88dbbacdd, ab9a9a9e9647392a19e7a885b08000e89c86b535
Linux/Linuxgeneric3.9Not reported
Siemens/RUGGEDCOM RST2428Pgeneric>=0 <V3.2V3.2
Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric>=0 <V3.2V3.2
Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 familygeneric>=0 <V3.2V3.2
Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <V1.1.1V1.1.1
Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Siemens/RUGGEDCOM RST2428P.
  2. 2Review the reported fix. Update Linux/Linux to d7d1a28f5dd57b4d83def876f8d7b4403bd37df9; Siemens/RUGGEDCOM RST2428P to V3.2; Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family to V3.2; Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 family to V3.2; Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5; Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP to V3.1.5; Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1.1; Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 21, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencelists.debian.org
  • Source referencelists.debian.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net: add more sanity checks to qdisc_pkt_len_init() One path takes care of SKB_GSO_DODGY, assuming skb->len is bigger than hdr_len. virtio_net_hdr_to_skb() does not fully dissect TCP headers, it only make sure it is at least 20 bytes. It is possible for an user to provide a malicious 'GSO' packet, total length of 80 bytes. - 20 bytes of IPv4 header - 60 bytes TCP header - a small gso_size like 8 virtio_net_hdr_to_skb() would declare this packet as a normal GSO packet, because it would see 40 bytes of payload, bigger than gso_size. We need to make detect this case to not underflow qdisc_skb_cb(skb)->pkt_len.

Quoted source text, attributed separately from HOL analysis.

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  • Ellucian WebAdvisor 3.2 Unauthenticated XXE InjectionSame generic ecosystem
  • sgl-project SGLang generate Endpoint io_struct.py denial of serviceSame generic ecosystem
  • sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of serviceSame generic ecosystem
  • ggml-org whisper.cpp Model Loader whisper_model_load out-of-boundsSame generic ecosystem
  • FreeRDP shadow before 3.32.0 Pre-Authentication Input Injection via Confirm Active bypassSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 15, 2026
References
14 linked sources
Open source record