{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31467","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.097Z","datePublished":"2026-04-22T13:53:56.910Z","dateUpdated":"2026-05-11T22:09:17.969Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:09:17.969Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: add GFP_NOIO in the bio completion if needed\n\nThe bio completion path in the process context (e.g. dm-verity)\nwill directly call into decompression rather than trigger another\nworkqueue context for minimal scheduling latencies, which can\nthen call vm_map_ram() with GFP_KERNEL.\n\nDue to insufficient memory, vm_map_ram() may generate memory\nswapping I/O, which can cause submit_bio_wait to deadlock\nin some scenarios.\n\nTrimmed down the call stack, as follows:\n\nf2fs_submit_read_io\n  submit_bio                      //bio_list is initialized.\n    mmc_blk_mq_recovery\n      z_erofs_endio\n        vm_map_ram\n          __pte_alloc_kernel\n            __alloc_pages_direct_reclaim\n              shrink_folio_list\n                __swap_writepage\n                  submit_bio_wait  //bio_list is non-NULL, hang!!!\n\nUse memalloc_noio_{save,restore}() to wrap up this path."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/erofs/zdata.c"],"versions":[{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"d6565ea662e17d45a577184b0011bd69de22dc2b","status":"affected","versionType":"git"},{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"d9d8360cb66e3b599d89d2526e7da8b530ebf2ff","status":"affected","versionType":"git"},{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902","status":"affected","versionType":"git"},{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"378949f46e897204384f3f5f91e42e93e3f87568","status":"affected","versionType":"git"},{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"da40464064599eefe78749f75cd2bba371044c04","status":"affected","versionType":"git"},{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"e83e20b82859f0588e9a52a6fa9fea704a2061cf","status":"affected","versionType":"git"},{"version":"648f2de053a882c87c05f0060f47d3b11841fdbe","lessThan":"c23df30915f83e7257c8625b690a1cece94142a0","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/erofs/zdata.c"],"versions":[{"version":"5.13","status":"affected"},{"version":"0","lessThan":"5.13","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.131","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.80","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.21","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.11","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.6.131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d6565ea662e17d45a577184b0011bd69de22dc2b"},{"url":"https://git.kernel.org/stable/c/d9d8360cb66e3b599d89d2526e7da8b530ebf2ff"},{"url":"https://git.kernel.org/stable/c/5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902"},{"url":"https://git.kernel.org/stable/c/378949f46e897204384f3f5f91e42e93e3f87568"},{"url":"https://git.kernel.org/stable/c/da40464064599eefe78749f75cd2bba371044c04"},{"url":"https://git.kernel.org/stable/c/e83e20b82859f0588e9a52a6fa9fea704a2061cf"},{"url":"https://git.kernel.org/stable/c/c23df30915f83e7257c8625b690a1cece94142a0"}],"title":"erofs: add GFP_NOIO in the bio completion if needed","x_generator":{"engine":"bippy-1.2.0"}}}}