In the Linux kernel, the following vulnerability has been resolved:
erofs: set fileio bio failed in short read case
For file-backed mount, IO requests are handled by vfs_iocb_iter_read(). However, it can be interrupted by SIGKILL, returning the number of bytes actually copied. Unused folios in bio are unexpectedly marked as uptodate.
vfs_read filemap_read filemap_get_pages filemap_readahead erofs_fileio_readahead erofs_fileio_rq_submit vfs_iocb_iter_read filemap_read filemap_get_pages <= detect signal erofs_fileio_ki_complete <= set all folios uptodate
This patch addresses this by setting short read bio with an error directly.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel6.18-headersUpgrade kernel6.18-debuginfoUpgrade kernel-livepatch-6.18.25-52.107Upgrade kernel6.12-libbpf-develUpgrade kernel6.18-toolsUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.12-tools-debuginfoUpgrade perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel6.18-tools-develUpgrade bpftool6.18-debuginfoUpgrade kernel6.12-libbpf-staticUpgrade kernel6.18-tools-debuginfoUpgrade bpftool6.12Upgrade kernel6.18-modules-extraUpgrade python3-perf6.18Upgrade kernel6.12-toolsUpgrade kernel6.12-libbpfUpgrade perf6.18Upgrade kernel6.18-develUpgrade python3-perf6.18-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-develUpgrade python3-perf6.12Upgrade perf6.18-debuginfoUpgrade kernel6.12-modules-extraUpgrade kernel6.18-debuginfo-common-aarch64Upgrade bpftool6.18Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-livepatch-6.12.80-105.147Upgrade kernel6.12-headersUpgrade bpftool6.12-debuginfoUpgrade kernel6.18-modules-extra-commonUpgrade perf6.12Upgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-tools-develUpgrade kernel6.18Upgrade kernel6.12 | May 6, 2026 | Apr 22, 2026 |
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