CVE-2024-26853

In the Linux kernel, the following vulnerability has been resolved: igc: avoid returning frame twice in XDP_REDIRECT When a frame can not be transmitted in XDP_REDIRECT (e.g. due to a full queue), it is necessary to free it by calling xdp_return_frame_rx_napi. However, this is the responsibility of the caller of the ndo_xdp_xmit (see for example bq_xmit_all in kernel/bpf/devmap.c) and thus calling it inside igc_xdp_xmit (which is the ndo_xdp_xmit of the igc driver) as well will lead to memory corruption. In fact, bq_xmit_all expects that it can return all frames after the last successfully transmitted one. Therefore, break for the first not transmitted frame, but do not call xdp_return_frame_rx_napi in igc_xdp_xmit. This is equally implemented in other Intel drivers such as the igb. There are two alternatives to this that were rejected: 1. Return num_frames as all the frames would have been transmitted and release them inside igc_xdp_xmit. While it might work technically, it is not what the return value is meant to represent (i.e. the number of SUCCESSFULLY transmitted packets). 2. Rework kernel/bpf/devmap.c and all drivers to support non-consecutively dropped packets. Besides being complex, it likely has a negative performance impact without a significant gain since it is anyway unlikely that the next frame can be transmitted if the previous one was dropped. The memory corruption can be reproduced with the following script which leads to a kernel panic after a few seconds. It basically generates more traffic than a i225 NIC can transmit and pushes it via XDP_REDIRECT from a virtual interface to the physical interface where frames get dropped. #!/bin/bash INTERFACEenp4s0 INTERFACE_IDX`cat /sys/class/net/$INTERFACE/ifindex` sudo ip link add dev veth1 type veth peer name veth2 sudo ip link set up $INTERFACE sudo ip link set up veth1 sudo ip link set up veth2 cat << EOF > redirect.bpf.c SEC("prog") int redirect(struct xdp_md *ctx) { return bpf_redirect($INTERFACE_IDX, 0); } char _license[] SEC("license") "GPL"; EOF clang -O2 -g -Wall -target bpf -c redirect.bpf.c -o redirect.bpf.o sudo ip link set veth2 xdp obj redirect.bpf.o cat << EOF > pass.bpf.c SEC("prog") int pass(struct xdp_md *ctx) { return XDP_PASS; } char _license[] SEC("license") "GPL"; EOF clang -O2 -g -Wall -target bpf -c pass.bpf.c -o pass.bpf.o sudo ip link set $INTERFACE xdp obj pass.bpf.o cat << EOF > trafgen.cfg { /* Ethernet Header */ 0xe8, 0x6a, 0x64, 0x41, 0xbf, 0x46, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, const16(ETH_P_IP), /* IPv4 Header */ 0b01000101, 0, # IPv4 version, IHL, TOS const16(1028), # IPv4 total length (UDP length + 20 bytes (IP header)) const16(2), # IPv4 ident 0b01000000, 0, # IPv4 flags, fragmentation off 64, # IPv4 TTL 17, # Protocol UDP csumip(14, 33), # IPv4 checksum /* UDP Header */ 10, 0, 1, 1, # IP Src - adapt as needed 10, 0, 1, 2, # IP Dest - adapt as needed const16(6666), # UDP Src Port const16(6666), # UDP Dest Port const16(1008), # UDP length (UDP header 8 bytes + payload length) csumudp(14, 34), # UDP checksum /* Payload */ fill('W', 1000), } EOF sudo trafgen -i trafgen.cfg -b3000MB -o veth1 --cpp

Publication date: Wed, 17 Apr 2024 16:15:00 +0000


Cyber News related to CVE-2024-26853

AWS LetsEncrypt Lambda: Custom TLS Provider - DZone - Trying to renew ... INFO[0000] Checking certificate for domain 'hackernoon.referrs.me' with arn 'arn:aws:acm:us-east-2:004867756392:certificate/72f872fd-e577-43f4-ae38-6833962630af' INFO[0000] Certificate status is 'ISSUED' INFO[0000] Certificate in ...
1 month ago Feeds.dzone.com
Vulnerability Summary for the Week of March 11, 2024 - Published 2024-03-15 CVSS Score not yet calculated Source & Patch Info CVE-2021-47111416baaa9-dc9f-4396-8d5f-8c081fb06d67416baaa9-dc9f-4396-8d5f-8c081fb06d67416baaa9-dc9f-4396-8d5f-8c081fb06d67 PrimaryVendor - Product linux - linux Description In the ...
8 months ago Cisa.gov
CVE-2024-26853 - In the Linux kernel, the following vulnerability has been resolved: ...
7 months ago
Vulnerability Summary for the Week of March 4, 2024 - Published 2024-03-06 CVSS Score not yet calculated Source & Patch Info CVE-2023-52584416baaa9-dc9f-4396-8d5f-8c081fb06d67416baaa9-dc9f-4396-8d5f-8c081fb06d67416baaa9-dc9f-4396-8d5f-8c081fb06d67416baaa9-dc9f-4396-8d5f-8c081fb06d67 PrimaryVendor - ...
8 months ago Cisa.gov
CVE-2024-37051 - GitHub access token could be exposed to third-party sites in JetBrains IDEs after version 2023.1 and less than: IntelliJ IDEA 2023.1.7, 2023.2.7, 2023.3.7, 2024.1.3, 2024.2 EAP3; Aqua 2024.1.2; CLion 2023.1.7, 2023.2.4, 2023.3.5, 2024.1.3, 2024.2 ...
5 months ago Tenable.com
The Top 24 Security Predictions for 2024 - Welcome to the second installment of this comprehensive annual look at global cybersecurity industry predictions from the top security industry vendors, technology magazines, expert thought leaders and many more. Last week, in part one of The Top 24 ...
10 months ago Securityboulevard.com
CVE-2024-9256 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9255 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9254 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9253 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9252 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9251 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9250 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9246 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
CVE-2024-9243 - Addressed potential issues where the application could be exposed to a Use-After-Free vulnerability and crash when handling certain checkbox field objects, Doc objects, Annotation objects, or AcroForms, which attackers could exploit to execute remote ...
1 month ago Tenable.com
Securing Gold: Assessing Cyber Threats on Paris 2024 - The next Olympic Games hosted in Paris will take place from 26 July to 11 August 2024, while the Paralympic Games will be carried out from 28 August to 8 September 2024. Paris 2024 estimated the number of spectators for the next edition to be 9,7 ...
10 months ago Blog.sekoia.io
Microsoft Office 2024 now available for Windows and macOS users - As announced earlier in September, starting in Office 2024, Microsoft will also turn off ActiveX controls by default in Word, Excel, PowerPoint, and Visio client apps, a measure likely prompted by ActiveX's well-known security issues. Last month, ...
1 month ago Bleepingcomputer.com
Critical Zimbra Postjournal flaw CVE-2024-45519 actively exploited in the wild. Patch it now! - “Beginning on September 28, @Proofpoint began observing attempts to exploit CVE-2024-45519, a remote code execution vulnerability in Zimbra mail servers. Beginning on September 28, @Proofpoint began observing attempts to exploit CVE-2024-45519, ...
1 month ago Securityaffairs.com
The Top 24 Security Predictions for 2024 - For 2024, top topics range from upcoming elections to regional wars to space exploration to advances in AI. And with technology playing a more central role in every area of life, annual cybersecurity prediction reports, cyber industry forecasts and ...
11 months ago Securityboulevard.com
Ransomware Attack Demands Reach a Staggering $5.2m in 2024 - The average extortion demand per ransomware attack was over $5.2m in the first half of 2024, according to a new analysis by Comparitech. This figure was calculated from 56 known ransom demands issued by threat actors from January-June 2024. The ...
4 months ago Infosecurity-magazine.com
Patch Now: Critical Windows Kerberos Bug Bypasses Microsoft Security - Microsoft eased enterprise security teams into 2024 with a relatively light January security update consisting of patches for 48 unique CVEs, just two of which the company identified as being of critical severity. For the second straight month, ...
10 months ago Darkreading.com
Threat Brief: CVE-2024-6387 OpenSSH RegreSSHion Vulnerability - On July 1, 2024, a critical signal handler race condition vulnerability was disclosed in OpenSSH servers on glibc-based Linux systems. Using Palo Alto Networks Xpanse data, we observed 23 million instances of OpenSSH servers including all versions. ...
4 months ago Unit42.paloaltonetworks.com
Key Takeaways from the 2024 Crypto Crime Mid-Year Update | Tripwire - Contrary to what one might expect, aggregate illicit activity on the blockchain decreased 19.6% from H1 2023 to H1 2024, falling from $20.9B to $16.7B. Although ChainAnalysis notes that illicit activity totals will likely rise over time, these ...
1 month ago Tripwire.com
MOVEit Transfer Flaws Push Security Defense Into a Race With Attackers - Attackers appear to be pounding away at a couple of critical bugs that Progress Software disclosed this week in its MOVEit file transfer application, with nearly the same ferocity as they did the zero-day flaw the company disclosed almost exactly a ...
4 months ago Darkreading.com
CyberPower PowerPanel Enterprise Power Device Network Utility Multiple Vulnerabilities - February 2, 2024 - Tenable attempts to establish a security contact with the vendor. February 7, 2024 - Tenable discloses issues to vendor. March 18, 2024 - Vendor states test version should be available by early April. March 28, 2024 - Vendor states ...
6 months ago Tenable.com

Latest Cyber News


Cyber Trends (last 7 days)


Trending Cyber News (last 7 days)