cpumap: Zero-initialise xdp_rxq_info struct before running XDP program
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 5.10.213, 5.15.152, 6.1.82, 6.6.22, 6.7.10
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: cpumap: Zero-initialise xdp_rxq_info struct before running XDP program When running an XDP program that is attached to a cpumap entry, we don't initialise the xdp_rxq_info data structure being used in the xdp_buff that backs the XDP program invocation. Tobias noticed that this leads to random values being returned as the xdp_md->rx_queue_index value for XDP programs running in a cpumap. This means we're basically returning the contents of the uninitialised memory, which is bad. Fix this by zero-initialising the rxq data structure before running the XDP program.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 9216477449f33cdbc9c9a99d49f500b7fbb81702 · fixed in 5f4e51abfbe6eb444fa91906a5cd083044278297; From 9216477449f33cdbc9c9a99d49f500b7fbb81702 · fixed in f0363af9619c77730764f10360e36c6445c12f7b; From 9216477449f33cdbc9c9a99d49f500b7fbb81702 · fixed in 3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95; From 9216477449f33cdbc9c9a99d49f500b7fbb81702 · fixed in f562e4c4aab00986dde3093c4be919c3f2b85a4a; From 9216477449f33cdbc9c9a99d49f500b7fbb81702 · fixed in eaa7cb836659ced2d9f814ac32aa3ec193803ed6; From 9216477449f33cdbc9c9a99d49f500b7fbb81702 · fixed in 2487007aa3b9fafbd2cb14068f49791ce1d7ede5
- Linux Linux
5.9
- KernelLinux
From 5.9.0 · fixed in 5.10.213; From 5.11.0 · fixed in 5.15.152; From 5.16.0 · fixed in 6.1.82; From 6.2.0 · fixed in 6.6.22; From 6.7.0 · fixed in 6.7.10