In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put\/get<\/p>\n
The ipc_control_data buffer is allocated as kzalloc(max_size), where
\nmax_size covers the entire struct sof_ipc_ctrl_data including its
\nflexible array payload. However, the bounds checks in bytes_ext_put
\nand _bytes_ext_get compared user data lengths against max_size
\ndirectly, ignoring that cdata->data sits at an offset of
\nsizeof(struct sof_ipc_ctrl_data) bytes into the allocation.<\/p>\n
This allowed writing up to sizeof(struct sof_ipc_ctrl_data) bytes past
\nthe end of the heap buffer from unprivileged userspace via the ALSA TLV
\nkcontrol interface, and similarly allowed over-reading adjacent heap
\ndata on the get path.<\/p>\n
Fix all bounds checks to subtract sizeof(*cdata) from max_size so they
\nreflect the actual space available at the cdata->data offset. Also fix
\nthe error-path restore in bytes_ext_put which wrote to cdata->data
\ninstead of cdata, causing the same overflow.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ASoC: SOF: ipc3-control: Fix heap overflow in bytes_ext put\/get<\/p>\n
The ipc_control_data buffer is allocated as kzalloc(max_size), whe<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6885","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6885","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}