{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-72047 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-72047 is a vulnerability in Linux, published on 15 Aug 2026."},"fix_prompt":"Check this codebase for CVE-2026-72047 and fix it if it is affected.\n\nWhat it is: CVE-2026-72047 is a vulnerability in Linux, published on 15 Aug 2026. \nExploitation: There is no known exploitation of CVE-2026-72047 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-72047/ (Markdown: https://insights.sbomify.com/CVE-2026-72047/index.md)","id":"CVE-2026-72047","markdown":"https://insights.sbomify.com/CVE-2026-72047/index.md","name":"CVE-2026-72047","record":{"aliases":["BELL-CVE-2026-72047","DEBIAN-CVE-2026-72047","GHSA-r4v9-gf4r-42ww","UBUNTU-CVE-2026-72047"],"analysis":null,"analysis_generated_by":null,"assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nieee802154: ca8210: fix pointer truncation in kfifo on 64-bit\n\nca8210_test_int_driver_write() and ca8210_test_int_user_read() exchange\na kmalloc'd buffer pointer through a struct kfifo, but pass a literal\n'4' as the byte count to kfifo_in()/kfifo_out().\n\nThis is correct on 32-bit (pointer = 4 bytes), but on 64-bit only the\nlow 4 bytes of the 8-byte pointer are written into the FIFO. The reader\nthen reads back 4 bytes into an 8-byte local pointer variable, leaving\nthe upper 4 bytes uninitialized stack data. The first dereference of\nthe reconstructed pointer (fifo_buffer[1]) accesses an arbitrary kernel\naddress and generally results in an oops.\n\nUse sizeof(fifo_buffer) so the byte count matches pointer width on every\narchitecture.\n\nThe driver has no architecture restriction in Kconfig, so any 64-bit\nbuild with CONFIG_IEEE802154_CA8210_DEBUGFS=y is exposed. Issue has\nbeen latent since the driver was added in 2017 because it is most\ncommonly deployed on 32-bit MCUs.\n\nFound via a custom Coccinelle semantic patch hunting for short-byte\nkfifo I/O on byte-mode kfifos used to shuttle pointers.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"ieee802154: ca8210: fix pointer truncation in kfifo on 64-bit","id":"CVE-2026-72047","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":8,"next":{"headline":"ieee802154: ca8210: fix cas_ctl leak on spi_async failure","id":"CVE-2026-72048"},"packages":[],"prev":{"headline":"gve: fix header buffer corruption with header-split and HW-GRO","id":"CVE-2026-72046"},"products":["Linux"],"published":"2026-08-15","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-17","vendors":["Linux"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-72047/"}