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High-Severity Vulnerability In Linux Caused By a Single Errant Character

Slashdot
3 weeks 6 days ago
An anonymous reader quotes a report from Ars Technica: Researchers have analyzed a high-severity vulnerability in Linux that's able to escalate untrusted users to root by exploiting a bug you don't often see: a single errant character inside the kernel. The vulnerability, tracked as CVE-2026-23111, is located in nf_tables, a subsystem of the Linux kernel that provides packet filtering capabilities. It's used to manage firewall rules and replaces older subsystems such as iptables, ip6tables, arptables, and ebtables. The presence of a single mis-issued exclamation point in code implementing nf_tables introduced a use-after-free, a class of vulnerability that corrupts memory by placing malicious code at memory addresses that haven't been properly freed of their previous contents. CVE-2026-23111 can be exploited by an unprivileged user or process to elevate system rights to root. The exploit works by disrupting the deletion of verdicts -- a determination within the nf_tables framework that determines if a packet matches a rule calling for a certain action to be performed. This process can use what are known as catchall elements, which act as a wildcard in the event a lookup doesn't match any other element in the set. When a verdict map is deleted from memory, catchall elements are deactivated and a chain's reference counter is decremented. When errors occur the deletion can be reversed and the counter incremented. CVE-2026-53111 allows for that process to be altered. As a result, the exploit can decrement the variable an arbitrary number of times and then delete and free the chain when some objects still point to it. Although the kernel vulnerability was fixed in February, multiple proof-of-concept exploits have since emerged, including one from FuzzingLabs in April and another from Exodus Intelligence that works on Debian and Ubuntu.

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EU Says Decision Not to Launch Siri AI in Europe Is Apple's Alone

Slashdot
3 weeks 6 days ago
The European Commission says Apple's decision not to launch Siri AI in the EU is Apple's alone, arguing that the company sought an exemption from Digital Markets Act interoperability rules instead of building a compliant privacy- and security-preserving solution. Apple, meanwhile, says regulators rejected its proposals and claims the DMA would require giving third-party AI systems overly broad access to users' devices. MacRumors reports: Commission spokesperson Thomas Regnier told reporters in Brussels: "The decision not to roll out Siri AI in the EU is Apple's and Apple's only. Apple was simply unable to develop interoperability solutions that meet essential EU privacy and security standards. Instead of trying to find a suitable compliance solution, Apple simply made a request to the European Commission to be exempted from their interoperability obligations. That's not an option." Craig Federighi, Apple's senior vice president of Software Engineering, said the company was "deeply disappointed" and cited what it described as regulators' refusal to accept any of Apple's proposals, including a system called Trusted System Agent that would have allowed third-party virtual assistants to safely access the same device capabilities as Siri AI. The Commission's account tells a different story. Rather than negotiating over Apple's proposed solutions, regulators say Apple simply requested a blanket exemption from its interoperability obligations under the Digital Markets Act, something the Commission says is not an available option. Apple's statement framed the DMA's requirements as demanding that any AI system be given "nearly unlimited access" to a user's device.

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