Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: erofs: add GFP_NOIO in the bio completion if needed The bio completion path in the process context (e.g. dm-verity) will directly call into decompression rather than trigger another workqueue context for minimal scheduling latencies, which can then call vm_map_ram() with GFP_KERNEL. Due to insufficient memory, vm_map_ram() may generate memory swapping I/O, which can cause submit_bio_wait to deadlock in some scenarios. Trimmed down the call stack, as follows: f2fs_submit_read_io submit_bio //bio_list is initialized. mmc_blk_mq_recovery z_erofs_endio vm_map_ram __pte_alloc_kernel __alloc_pages_direct_reclaim shrink_folio_list __swap_writepage submit_bio_wait //bio_list is non-NULL, hang!!! Use memalloc_noio_{save,restore}() to wrap up this path.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 648f2de053a882c87c05f0060f47d3b11841fdbe before d6565ea662e17d45a577184b0011bd69de22dc2b; affected 648f2de053a882c87c05f0060f47d3b11841fdbe before d9d8360cb66e3b599d89d2526e7da8b530ebf2ff; affected 648f2de053a882c87c05f0060f47d3b11841fdbe before 5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902; affected 648f2de053a882c87c05f0060f47d3b11841fdbe before 378949f46e897204384f3f5f91e42e93e3f87568; affected 648f2de053a882c87c05f0060f47d3b11841fdbe before da40464064599eefe78749f75cd2bba371044c04; affected 648f2de053a882c87c05f0060f47d3b11841fdbe before e83e20b82859f0588e9a52a6fa9fea704a2061cf; affected 648f2de053a882c87c05f0060f47d3b11841fdbe before c23df30915f83e7257c8625b690a1cece94142a0 |
| Linux / Linux | affected 5.13; unaffected 0 before 5.13; unaffected 5.15.203 through 5.15.*; unaffected 6.1.168 through 6.1.*; unaffected 6.6.131 through 6.6.*; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d6565ea662e17d45a577184b0011bd69de22dc2b
- https://git.kernel.org/stable/c/d9d8360cb66e3b599d89d2526e7da8b530ebf2ff
- https://git.kernel.org/stable/c/5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902
- https://git.kernel.org/stable/c/378949f46e897204384f3f5f91e42e93e3f87568
- https://git.kernel.org/stable/c/da40464064599eefe78749f75cd2bba371044c04
- https://git.kernel.org/stable/c/e83e20b82859f0588e9a52a6fa9fea704a2061cf
- https://git.kernel.org/stable/c/c23df30915f83e7257c8625b690a1cece94142a0